| 单词 | pyrite |
| 例句 | I placed it underneath his pillow, along with my copper pyrite rock for good luck. Breaking Through 2001-08-27T00:00:00Z The clerk caught my eye and said, “Those are copper pyrite rocks.” Breaking Through 2001-08-27T00:00:00Z For the Mobiles, she takes elements made in advance and arranges them intuitively and playfully, with raw minerals like pyrite, malachite and amber used for their transformative properties. Getting a Brighter View During Milan Design Week 2023-04-11T04:00:00Z The screens hang in rooms lined with tessellated wallpaper; arranged throughout the pavilion are gilded geometric objects based on the shape of pyrite, a mineral also known by the colonial-era term “fool’s gold.” Fighting Forgetting, With a Venice Biennale Win 2022-05-13T04:00:00Z There are quarries all over the country where you can find calcite, quartz and pyrite. Chemical Compounds That Incite Oohs and Aahs 2022-06-24T04:00:00Z The marble is imperfect, not one uniform color throughout the block, and contains traces of pyrite, a sulfide mineral that reacts with metal, which would explain why sparks flew when Michelangelo hammered away. Bringing a Deathly Michelangelo Sculpture Back to Life 2021-09-27T04:00:00Z But I didn’t mind getting plain old pyrite, either. How I Learned to Tolerate Blake Lively 2016-07-01T04:00:00Z Occasionally, she senses she’s hit the jackpot, even when the result is a piece of pyrite like the album’s first single, “Me!,” a duet with Urie. ‘Miss Americana’ Review: Taylor Swift, Scathingly Alone 2020-01-30T05:00:00Z Some marine sulfur becomes pyrite, which is trapped in sediment. Fundamentals of Biology 2015-01-01T00:00:00Z Morrison is on the Mars Curiosity team, and she hopes to use this kind of detail to identify how that planet's pyrite formed—and if life could have been involved. New Classification Reveals Just How Many Ways Minerals Form 2022-09-05T04:00:00Z Other sulphide minerals are commonly present within the ore, especially pyrite. Physical Geology 2015-01-01T00:00:00Z Gold was introduced by hydrothermal fluids which reacted with silty calcareous rocks, removing carbonate, creating additional permeability, and adding silica and gold-bearing pyrite in the pore space between grains. An Introduction to Geology 2017-01-01T00:00:00Z These include grains formed by pyrite, made from iron and sulfur, and which were nearly pure. A bizarre Martian rock looks just like coral 2022-03-04T05:00:00Z If upwelling occurs, the pyrite enters the soil and is converted to soil sulfates. Fundamentals of Biology 2015-01-01T00:00:00Z Along the way, you’ll pass the ruins of a pyrite mining operation. Winter is a fine time for a hike. Here are 6 spots to try. 2022-02-11T05:00:00Z The tailings and the waste rock at most mines are an environmental liability because they contain pyrite plus small amounts of ore minerals. Physical Geology 2015-01-01T00:00:00Z Iron sulfide, or pyrite, is a brassy metallic yellow. An Introduction to Geology 2017-01-01T00:00:00Z But assaying information — weighing it, analyzing it, separating the gold from the pyrite — still depends on old-fashioned human judgment. Opinion | We’re adapting to living with covid-19 — less so to accepting uncertainty 2021-12-24T05:00:00Z Thousands of homes in the Republic of Ireland have crumbled because of bricks made of pyrite and mica, which absorbs water, causing walls to crack. Donegal: Mica families to submit redress proposals to minister 2021-09-17T04:00:00Z The walls and even the floor were coated with fine bits of iron pyrite, popularly known as fool's gold due to its resemblance to the precious metal. Below a pyramid, a treasure trove sheds new light on ancient Mexican rites 2021-09-01T04:00:00Z On the other hand, many of the metallic minerals, such as pyrite, hematite, and magnetite, have densities over 5 g/cm3. Physical Geology 2015-01-01T00:00:00Z Commonly named fool’s gold, pyrite has a characteristic black to greenish-black streak. An Introduction to Geology 2017-01-01T00:00:00Z Close to the center of the globules, she saw curious pancake shapes in which she found tiny grains of magnetite, plus grains formed by pyrite, made from iron and sulfur. We may have found life on Mars 24 years ago 2020-06-13T04:00:00Z It is technically a rock that is coated in iron pyrite, also known as 'fools gold', and if you shine this material, just like Smith did, then it turns shiny and gold. Fossil hunter finds 185M year-old ‘golden snitch’ with ancient sea creature inside 2019-11-19T05:00:00Z He discovered that stromatolites are essentially composed of pyrite, often known as "fool's gold," along with organic matter. Scientists find the 'smoking gun,' signs of life from 3.5B years ago 2019-09-26T04:00:00Z Quartz veins are common in this situation, and they might also include pyrite, hematite, calcite, and even silver and gold. Physical Geology 2015-01-01T00:00:00Z In this case, goethite is a pseudomorph after pyrite, meaning it has taken the form of another mineral. An Introduction to Geology 2017-01-01T00:00:00Z The diver who recovered the suitcase on Sunday was wearing a protective suit due to the high toxicity levels of the lake that was part of a now-defunct copper pyrite mine. Suitcase with human remains retrieved from Cypriot lake 2019-04-28T04:00:00Z Investigators have intensified the search for bodies of victims at the firing range, the reservoir and a man-made lake near the abandoned copper pyrite mine. Serial-Killing Case Shocks Cyprus as Police Come In for Criticism 2019-04-27T04:00:00Z Gehling and Droser think the overlying sands turned to cement, perhaps because of high levels of the mineral pyrite, forming a death mask of the decaying creatures below. This Australian farmer is saving fossils of some of the planet’s weirdest, most ancient creatures 2019-03-28T04:00:00Z Although this waste rock contains little or no ore minerals, at many mines it contains up to a few percent pyrite. Physical Geology 2015-01-01T00:00:00Z Sediment-hosted disseminated gold deposits consist of low concentrations of microscopic gold as inclusions and disseminated atoms in pyrite crystals. An Introduction to Geology 2017-01-01T00:00:00Z The team checked the strings against similar structures formed by purely physical processes from pyrite, but concluded their composition, shape, and texture are different. 2.1-Billion-Year-Old Tracks May Be Giant Ancient "Slime Molds" [Video] 2019-03-23T04:00:00Z She became friends with Anning, 10 years her senior, who taught her about fossils, and helped her create a small personal collection including an ammonite that glittered gold with iron pyrite. Behind a lesbian furore over a famous palaeontologist lies a deeper truth | Tori Herridge and Becky Wragg Sykes 2019-03-20T04:00:00Z Jackson recalls his clients’ amazement when he brought them to a mine littered with pyrite crystals in Spain. Why working as a travel guide or cruise lecturer can be an effective form of science outreach 2018-10-09T04:00:00Z They put the corpses in seawater tanks to mimic the ancient ocean's chemistry and watched as iron-rich pyrite was deposited around the bodies over the course of about a month. "Death Masks" Reveal How Earliest Complex Organisms Became Fossils 2018-09-01T04:00:00Z In the presence of oxygenated water, sulfides such as pyrite react undergo complex reactions to release metal ions and hydrogen ions, lowering pH to highly acidic levels. An Introduction to Geology 2017-01-01T00:00:00Z Repeatedly hitting the axes with pyrite also leaves distinct scratches on the stone tools. Neanderthals could start fires with their stone tools, new study suggests 2018-07-19T04:00:00Z Another resembles a cosmetic compact, inlaid on one side with pyrite - fool’s gold - polished into a mirror a thousand or so years ago. Researchers imaging ancient treasures find hidden history 2018-05-29T04:00:00Z However, pyrite crystals found among the fungal filaments were enriched in a form of sulfur preferred by microbes called sulfate-reducing bacteria -- one of the very same groups that grow with anaerobic fungi inside cattle. Moldy Rock Pulled from 2,500 Feet Underground 2017-09-23T04:00:00Z There’s solid evidence, in a hand-grooved nodule of pyrite from Belgium, that some humans set fires this way around 13,000 years ago. Quest for Clues to Humanity's First Fires 2017-06-19T04:00:00Z The mirrors and eyes are made from pyrite – or fool’s gold. Mexico's ancient city guards its secrets but excavation reveals new mysteries 2017-04-24T04:00:00Z The structures were exceptionally well preserved, the eggs and exoskeletons of the trilobites replaced with an iron sulfide ore called pyrite. Ancient trilobites may have released sperm and eggs from their heads 2017-02-23T05:00:00Z It was enough to convince his backers to fund another trip, but it ultimately turned out to be pyrite—fool's gold. These Maps Show the Epic Quest for a Northwest Passage 2016-10-20T04:00:00Z Together, the combination of fossilized filaments and isotope-skewed pyrite suggests, they claim, that the deep biosphere in continental rocks may be “a neglected vast fungal habitat.” Moldy Rock Pulled from 2,500 Feet Underground 2017-09-23T04:00:00Z That leaves striking rocks, such as pyrite against flint, as the method Sorensen is most likely to find proof for among artifacts. Quest for Clues to Humanity's First Fires 2017-06-19T04:00:00Z I've always believed that while Americans enjoy shiny new objects, they are able to tell the difference between pyrite and gold. Time to Take Down Trump 2015-09-11T04:00:00Z Wilson pulls pieces of pyrite off the overhang above him; a vein of the fool’s gold sparkles across the distance as his headlamp follows it to the edge of the wall. A shared history at Smuggler Mine 2015-08-22T04:00:00Z In September, at the Meteoritical Society meeting in Casablanca, Humayun reported finding veins of pyrite, fool’s gold. Feature: A castaway from ancient Mars 2014-11-25T05:00:00Z Their work culminated in 2013 with the discovery of a series of two chambers on either side of the tunnel near the end filled with pyrite mirrors and strange crystal spheres. New Artifact-Filled Chambers Revealed under Teotihuacan 2014-10-31T04:00:00Z It’s a big hunk of the mineral pyrite, also known as fool’s gold. What Is Your Fool's Gold? 2014-10-10T04:00:00Z The impact glass is completely replaced by minerals such as calcite and pyrite, but rare, space-linked elements such as platinum and ruthenium remain. Earth's Oldest and Biggest Crater Yields New Secrets 2014-04-29T22:00:00Z You may remember this mineral from Geology 101 as as pyrite, or perhaps by its more famous name: fool’s gold. Fool's Gold Preserves Tiny, Ancient Crustacean 2014-03-27T19:34:28Z An estimated 12,500 homeowners are also dealing with pyrite damage, a substance that creates destabilizing cracks and deep fissures in foundations, walls and ceilings and was widely used during the boom. Legacy of a Crash, Ghost Estates Haunt Ireland 2013-12-21T16:29:11Z On a recent afternoon, Pablo Colon, a neighborhood resident, was looking for pyrite — fool’s gold — to relieve his insomnia. | West Village: Stick, Stone and Bone Sells Products for the New Age 2013-08-22T19:57:59Z Some of the others brought glistening stones, and among them, apparently pyrites, which very commonly accompanies gold, but of the precious metal itself Raleigh could hardly boast a speck in truth. The Sea: Its Stirring Story of Adventure, Peril, & Heroism. Volume 2 2012-04-03T02:00:36.237Z The ore being now carefully examined proved worthless pyrites; and the Arctic gold mines seem to have proved a “fizzle” as great as any of the worst which have succeeded them. The Sea: Its Stirring Story of Adventure, Peril, & Heroism. Volume 3 2012-04-03T02:00:31.900Z The pyrite also preserves a few other tiny, stunning details of anatomy. Fool's Gold Preserves Tiny, Ancient Crustacean 2014-03-27T19:34:28Z A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z The rock near here is greenstone, in which are many veins of pyrites. Narrative of the surveying voyages of His Majesty's ships Adventure and Beagle, between the years 1826 and 1836 Volume I. - Proceedings of the First Expedition, 1826-1830 2012-02-24T03:00:32.793Z It is found in the combination of several metallic ores, such as pyrites or sulphuret of iron, and sulphurets of zinc, copper, and lead. The Little Gleaner, Vol. X. A Monthly Magazine for the Young 2012-02-03T03:00:20.453Z Indeed, the assumption that pyrite is a passive recorder of the Fe isotope reservoirs from which it was formed is tacit throughout much of the published literature. [Technical Response] Response to Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:40.137Z In all of these samples, pyrite Fe comprises <20% of the total Fe budget, and for most samples, especially BIFs, pyrite is insignificant or absent. [Technical Comment] Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:36.490Z An earth abounding in pyrites, used by the ancients to kill insects, etc., on vines; Ð applied by Brongniart to a carbonaceous alum schist. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z The specimens procured from the Cape were clay-slate, much intermixed with iron pyrites, and crossed by small veins of white quartz. Narrative of the surveying voyages of His Majesty's ships Adventure and Beagle, between the years 1826 and 1836 Volume I. - Proceedings of the First Expedition, 1826-1830 2012-02-24T03:00:32.793Z The formation is granite, and pyrites with the stone has helped to increase the cost of working. Early Days in North Queensland 2012-01-24T03:00:29.987Z In light of our data, Fe-depleted pyrite is not sufficient evidence on its own for past microbial activity and therefore emphasizes the necessity to use diverse geochemical and geological tools. [Technical Response] Response to Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:40.137Z Cobaltite, smaltite and other sulphides and sulpharsenides of the pyrites group of minerals crystallize in these forms. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Gold and iron pyrites, therefore, need never be mistaken for each other by any man who has a piece of steel about him. Harper's New Monthly Magazine Vol. IV, No. 19, Dec 1851 2011-12-25T03:00:11.297Z These balls are made of small bags or purses of hide, moistened, filled with iron pyrites, or some other heavy substance, and then dried. Narrative of the surveying voyages of His Majesty's ships Adventure and Beagle, between the years 1826 and 1836 Volume I. - Proceedings of the First Expedition, 1826-1830 2012-02-24T03:00:32.793Z But if any pyrites are present the effect is most detrimental, the gold becoming coated with a film of sulphur or a glazing of iron oxide. The Romance of Industry and Invention 2011-12-19T03:00:43.870Z We entirely agree, and it seemed intuitive that where pyrite is a minor species, the bulk composition will not reflect the fractionation associated with its formation but another mechanism. [Technical Response] Response to Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:40.137Z In the thermo-electrically positive crystals of pyrites the faces of the pentagonal dodecahedron are striated parallel to the cubic edges, whilst in the rarer negative crystals the faces are striated perpendicular to these edges. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Beat with a stone on copper pyrites, and it immediately begins to crumble. Harper's New Monthly Magazine Vol. IV, No. 19, Dec 1851 2011-12-25T03:00:11.297Z There, close to the boundary of the province of Manila and district of Moron, I found a face of disintegrated quartz glittering with large crystals of iron pyrites. The Inhabitants of the Philippines 2011-11-23T03:00:21.653Z These pyrites or 'sulphurets' are cleansed by concentration in various kinds of apparatus, all depending on the greater specific gravity of the portion sought to be saved. The Romance of Industry and Invention 2011-12-19T03:00:43.870Z We noted that the difference in Fe isotope composition between Archean seawater and the mean sedimentary pyrite grains is similar to the fractionation we find in our abiotic experiments. [Technical Response] Response to Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:40.137Z Sometimes the heat bakes some of them to such an extent that they appear to have flowed out of blazing furnaces, which we may see in the case of cadmia and pyrites. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z There are two substances which look exceedingly like gold;—copper and iron pyrites, substances familiar to most of us. Harper's New Monthly Magazine Vol. IV, No. 19, Dec 1851 2011-12-25T03:00:11.297Z In the first are found veins of calcite and quartz from half-an-inch to three inches thick, in which especially in the calcite the gold is visible mixed with iron and copper pyrites, galena and blende. The Inhabitants of the Philippines 2011-11-23T03:00:21.653Z Don't you know the difference between gold and iron pyrites yet? The Pike's Peak Rush Terry in the New Gold Fields 2011-11-11T03:00:26.697Z It is unfortunate that Czaja . choose a paper documenting “anomalous” FeS accumulations to support their assertion that pyrite formation in sediments is uniformly slow. [Technical Response] Response to Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:40.137Z The subject of pyrites is a most confused one; the term originates from the Greek word for fire, and referred in Greek and Roman times to almost any stone that would strike sparks. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Now, iron pyrites is harder than steel, and therefore a knife will fail to scratch it. Harper's New Monthly Magazine Vol. IV, No. 19, Dec 1851 2011-12-25T03:00:11.297Z The ore at the latter place is auriferous iron pyrites, called by the natives Inga. The Inhabitants of the Philippines 2011-11-23T03:00:21.653Z Where you're to blame is for having gone off on a wild-goose chase and left the claims and then been bamboozled by such nonsense as sacks full of iron pyrites. The Pike's Peak Rush Terry in the New Gold Fields 2011-11-11T03:00:26.697Z They do not discriminate between the distinct processes of pyrite nucleation, which initiates pyrite formation, and subsequent pyrite growth, which accounts for most of pyrite formation. [Technical Response] Response to Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:40.137Z The juices, however, out of which pyrites and silver are formed, appear to solidify into one body, and thus is produced what they call cobaltum. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z These are the only certain examples of natural combinations of the metal, the minute, though economically valuable, quantity often found in pyrites and other sulphides being probably only present in mechanical suspension. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z This ore is often found mixed with iron or copper pyrites, and sometimes with blende. The Inhabitants of the Philippines 2011-11-23T03:00:21.653Z That is just what I was afraid of," said Julian; "but I reckon iron pyrites comes in lumps, don't it? The Haunted Mine 2011-10-28T02:00:23.833Z We conclude that our experimental approach is valid and the results pertinent to the question of Fe isotope fractionation during sedimentary pyrite formation. [Technical Response] Response to Comment on ?Abiotic Pyrite Formation Produces a Large Fe Isotope Fractionation? 2012-02-02T18:55:40.137Z Perhaps this kind is neither pyrites nor galena, but has a genus of its own. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Prominent among these are galena and iron pyrites, the former being almost invariably gold-bearing. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z When they are found combined by nature, the substance is called pyrites. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z They were inexperienced when they first came out here, and there was nobody to tell them whether they had iron pyrites or gold. The Haunted Mine 2011-10-28T02:00:23.833Z Her "tinder-box" was a little seal-skin bag of soft dry moss, and with a lump of iron pyrites and a broken file she struck fire upon it. In the Arctic Seas A Narrative of the Discovery of the Fate of Sir John Franklin and his Companions 2011-10-10T02:00:18.377Z For it has not the colour of pyrites, nor the hardness. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The process was introduced in 1858 by Deetken at Grass Valley, California, where the waste minerals, principally pyrites from tailings, had been worked for a considerable time by amalgamation. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z Between two mountains, near this place are some capital mines, the produce of which are lead, calamine, mixed with iron, ochre, and pyrites. Curiosities of Great Britain: England and Wales Delineated Vol.1-11 Historical, Entertaining & Commercial; Alphabetically Arranged. 11 Volume set. 2011-09-26T02:00:29.140Z That is gold," said he; "there is no iron pyrites about that. The Haunted Mine 2011-10-28T02:00:23.833Z Other objects found in the graves are small flint knives, stone axes, flint and lumps of pyrites for obtaining fire, and, in the women’s graves, hand-mills for grinding corn. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 7 "Geoponici" to "Germany" 2011-09-26T02:00:25.313Z Sometimes, as is the case with pyrites, it is entirely devoid of metal. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The conversion of silver into the sulphide may be effected by heating with antimony sulphide, litharge and sulphur, pyrites, or with sulphur alone. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z But the discovery of pyrite, sulfur, lead and other minerals turned it into a booming little town, and by 1902 it was incorporated and named after the only thing anybody knew it for. In Mineral, Va., Sudden Fame as Earthquake?s Epicenter 2011-08-24T10:12:15Z "I am on hand, like a bogus coin made out of iron pyrites; you can't get rid of me." The Haunted Mine 2011-10-28T02:00:23.833Z It is often associated with blende and pyrites, and with calcite, fluorspar, quartz, barytes, chalybite and pearlspar as gangue minerals; in the upper oxidized parts of the deposits, cerussite and anglesite occur as alteration products. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z It, therefore, differs from pyrites in colour and properties. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Iron pyrites, however, is of greater practical importance, being in some districts exceedingly rich, and, next to the native metal, is the most prolific source of gold. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z Should there be much iron pyrites in the Lignite, it is sure, sooner or later, to decompose, when all that can be done is to throw it away. Sea-Weeds, Shells and Fossils 2011-08-20T02:00:11.557Z "Well, they brought a bag out for us to examine, and they thought it was nothing but iron pyrites," said Banta; and then he went on smoking his pipe. The Haunted Mine 2011-10-28T02:00:23.833Z The washed sample is then fused in the usual way to determine the proportion of sulphur existing as iron pyrites. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z For pyrites, if it does not contain vitriol, is generally either of a gold or silver colour, rarely of any other. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Magnetic pyrites, copper pyrites, zinc blende and arsenical pyrites are other and less important examples, the last constituting the gold ore formerly worked in Silesia. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z Any spar adhering to the ore, renders it refractory; blende and pyrites have the same effect. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z "Oh, it is gold!" exclaimed Jake, as Bob took the bag and bent over it; "it is not iron pyrites." The Haunted Mine 2011-10-28T02:00:23.833Z Sulphur in iron pyrites also acts as a reducing agent upon litharge, and increases the apparent effect in a similar manner. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Lastly, gold is found in pyrites, though rarely in large quantities. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Their produce has gradually decreased since the 17th century, and is now unimportant, but sulphate of copper, iron pyrites, and some gold, silver, sulphur and sulphuric acid, and red ochre are also produced. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2 "Fairbanks, Erastus" to "Fens" 2011-06-19T02:00:16.580Z Sometimes pyrites of a tin-white color are found mixed among the coal. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z It occurs principally as native gold, although usually alloyed with silver, but is frequently contained in iron pyrites. North America 2011-05-05T02:00:20.027Z One was by striking two hard pieces of stone—such as chert or pyrites—together, which gave a spark, which was caught on tinder and blown to a flame. American Indians 2011-04-21T02:00:55.200Z He, however, puts it on one side as merely a synonym for pyrite, nor can it be satisfactorily defined in much better terms. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Instead of two pieces of quartz the Eskimos use a piece of quartz and a piece of iron pyrites. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 4 "Finland" to "Fleury, Andre" 2011-03-20T02:00:30.697Z It is found in detached pieces and beds in red clay, and in veins in limestone rock, accompanied by sulphate of barytes, calcareous spar, blende, quartz, and pyrites. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z Who ever saw pyrites of iron taking a circuitous route to the magnet? The Funny Philosophers Wags and Sweethearts 2011-03-19T02:00:11.277Z Iron pyrites.—This is a sulphide of iron of very common occurrence. Geology 2011-02-20T03:00:12.660Z This kind of pyrites miners call cobaltum, if it be allowed to me to use our German name. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z It probably is not rich enough for amalgamation, as it contains a superior bulk of iron pyrites, blende, lead and earthy matter. The South-West By a Yankee. In Two Volumes. Volume 2 2011-02-05T03:00:13.817Z Iron ores and pyrites are also scattered over the surface of the ground, and occasionally lead ore. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z "And we are the pyrites," said the Professor. The Funny Philosophers Wags and Sweethearts 2011-03-19T02:00:11.277Z The stones indeed had a glittering appearance, like copper ore; but the pyrites to which that was owing were of a yellowish white, a certain indication of their containing chiefly iron. Lachesis Lapponica A Tour in Lapland, Volume 1 2010-12-31T03:00:11.350Z There are some who consider this the same as pyrites, because it is almost the same. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z He knew little about metallurgy, but one glance at the shining lump that he took from the nearest basket told him that the “gold” was pyrites, worth perhaps twopence a cart-load. Adventures Among the Red Indians Romantic Incidents and Perils Amongst the Indians of North and South America 2010-12-20T17:12:20.420Z The ore is found in detached pieces and solid masses, in beds, in red clay, accompanied by sulphate of barytes, calcareous spar, blende, iron pyrites, and quartz. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z The sediment chemistry transformed iron and sulfide into pyrite, which coated and preserved the shapes of the animals, including their appendages, and mineralized internal tissue. Fossil Trove Shows Diverse Creatures of Cambrian Did Not Disappear 2010-05-17T21:58:00Z In both cases the source is the same: the iron pyrites, practically always arsenical, contained in the coal or used in making the sulphuric acid. Food Poisoning If the ore contains any stibium, then iron slag is added to it; if pyrites, then are added cakes melted from a cupriferous stone and sand made from stones which easily melt. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z It is usually seen in white, glassy, translucent masses, and is obtained by sublimation from several ores containing arsenic in combination with metals, particularly from arsenical pyrites. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli No spars are found accompanying the ore; iron pyrite is occasionally met with, and plumbago is found in the vicinity. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z The substance used for the purpose was copper pyrites, which was changed to an impure sulphate of copper by the action of oil of vitriol and moist air. Catholic Churchmen in Science In the marls and shales exposed on the shore we are pretty sure to see pieces of wood, black as coal, sometimes quite large logs, often partly covered with shining iron pyrites. The Geological Story of the Isle of Wight Nor is pyrites devoid of gold, when, after being roasted and then rubbed on the touchstone, it colours the touchstone in the same way that it coloured it when rubbed in its crude state. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Now the beach supplied sand, lime supplied chalk, sea weeds supplied soda, pyrites supplied sulphuric acid and the ground supplied coal to heat the kiln to the wished-for temperature. Abandoned This locality is remarkable as yielding galena, heavy spar, blende, calcareous spar, fluor spar, pyrites, coal, and salt. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z Alum is the base of pure clay, and strata of clay are often met with containing much iron pyrites. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology A stratum is sometimes exposed on the shore containing fossils converted into pyrites. The Geological Story of the Isle of Wight It may be the residue from leaching roasted pyrites for vitriol, which would be reddish oxide of iron. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Iron pyrites is the mineral from which these black dyes are made, and some Turkish weavers seem to know no vegetable black or brown. The Oriental Rug A Monograph on Eastern Rugs and Carpets, Saddle-Bags, Mats & Pillows, with a Consideration of Kinds and Classes, Types, Borders, Figures, Dyes, Symbols, etc. Together with Some Practical Advice to Collectors. The ore is the common galena, with a broad glittering grain, and bluish-gray color, and is found accompanied by sulphate of barytes, blende, pyrites, quartz, and calcareous spar. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z The calcareous matter, for example, of shells, is often entirely removed and replaced by carbonate of iron, pyrites, silex, or some other ingredient, such as mineral waters usually contain in solution. Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology Iron pyrites, sulphide of iron in crystalline form, was formerly collected on the Sandown shore, and sent to London for the manufacture of sulphuric acid. The Geological Story of the Isle of Wight F—Wooden hoe with which the cakes of melted pyrites are drawn out. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Lampadius, who obtained it by heating a mixture of charcoal and pyrites. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" Iron ores and pyrites are also scattered over the surface of the ground, and occasionally lead ore. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z In the Ardennes clays bearing pyrites and oolitic limonite are about 30 ft. thick. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" Frequently marine worms have bored into them before they were locked up in the strata; the holes being generally filled afterwards with stone or pyrites. The Geological Story of the Isle of Wight If pyrites are smelted, the first to flow from the furnace into the forehearth, as may be seen at Goslar, is a white molten substance, injurious and noxious to silver, for it consumes it. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Closely resembles pyrite, but may be distinguished from it by being feebly magnetic. The Elements of Blowpipe Analysis Other minerals extracted include salt, kaolin, chalk, talc, asbestos, gypsum, mica, fluorite, quartzite, antimony, lime, sandstone, slate, and pyrites. Area Handbook for Bulgaria For example, all the specimens of bornite and pyrrhotite examined yielded sulphuretted hydrogen with tartaric, citric, and oxalic acids, but chalcopyrite and pyrite do not. The Galaxy, April, 1877 Vol. XXIII.—April, 1877.—No. 4. The other minerals found in the concentrates are pebbles and fragments of pyrope, zircon, cyanite, chrome-diopside, enstatite, a green pyroxene, mica, ilmenite, magnetite, chromite, hornblende, olivine, barytes, calcite and pyrites. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" The first two of these latter are obtained from pyrites, which is numbered amongst the compound minerals. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Magnesite, arsenic, pyrites, and gypsum sources are worked. Area Handbook for Albania The pyrites are plentiful and produce exportable quantities of sulfur and sulfur products. Area Handbook for Bulgaria If it contains more than 55% of copper it is directly refined, while if it contains a lower percentage it is smelted with matte or calcined copper pyrites. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" If the obsidian mirror was the symbol, par excellence, of Mexican star cult, there are evidences that the small mirror of polished pyrites was that of the sun-cult. The Fundamental Principles of Old and New World Civilizations The ores are argentiferous galena, accompanied by considerable amounts of blende and pyrites, all oxidized near the surface. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Nodules of pyrites and of marcasite are common in many clays, sandstones and marls. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The cobalt ores at these localities occur with pyrites and chalcopyrite as bands in gneiss. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" By the ancients copper-pyrites was included with other minerals under the term pyrites, though the copper-ore from Cyprus referred to by Aristotle as chalcites may possibly have been identical with this mineral. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" They are principally finely divided quartz, epidote, zoisite, rutile, limonite, calcite, pyrites, and very small particles of these are rarely absent from natural clays. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" By Agricola it was a generic term in somewhat the same sense that it is still used in mineralogy, as, for instance, iron pyrite, copper pyrite, etc. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z They bear a considerable resemblance to some concretions, e.g. crystalline marcasite and pyrite nodules. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" It is found as granular to compact masses, and frequently as beautifully developed crystals, which have the same symmetry as the isomorphous mineral pyrites, being cubic with parallel hemihedrism. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Calcination is only advisable for ores which contain relatively much iron pyrites and little copper pyrites. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" Copper pyrites occurs in several parts of Burren, but in small quantity. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" The German term in the Glossary for panes ex pyrite is stein, the same as the modern German for matte. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z That the sediment was in a soft condition may be inferred from the purity and perfect crystalline form of some of these bodies, e.g. gypsum, pyrites, marcasite. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 7 "Columbus" to "Condottiere" The divisional planes often contain small films of other minerals, the commonest being calcite, gypsum and iron pyrites, but in some cases zeolitic minerals and galena have been observed. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Pyritic Smelting.—The heat generated by the oxidation of iron and sulphur has always been used to maintain combustion in the kilns or stalls for roasting pyrites. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" The ore yields a very soft and pure lead, though the presence of pyrite prevents the manufacture of the virgin lead used in making the best brands of white paint. The Galaxy, Volume 23, No. 2, February, 1877 The cakes of melted pyrites are usually roasted twice over, and those of cadmia once. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Bismuth bismuth Cobalt cobalt Copper copper Copper pyrites. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries Sulphur is derived mainly from iron Sulphur in coal. pyrites, which yields sulphates by combustion. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" Maybe I try to take advantage of you and show you what dey call fools gold–what mineralogists call pyrites of iron? Silver and Gold A Story of Luck and Love in a Western Mining Camp I did hear of a fellow who found a lot of iron pyrites, and filled his pockets with them. Elam Storm, The Wolfer Or, The Lost Nugget After this the material from the melted pyrites flows out, and then the molten lead contained in the forehearth absorbs the gold and silver. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Combinations of sulphur with metals are usually named pyrites. Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries An indication of the character of the ash of a coal is afforded by its colour, white ash coals being generally freer from sulphur than those containing iron pyrites, which yield a red ash. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" There is a quarter of a million dollars on the dump 206 and the fellows think it is copper and pyrites of iron.” Where Strongest Tide Winds Blew He certainly would not run away with his pockets filled with pyrites. Elam Storm, The Wolfer Or, The Lost Nugget In the German translation, however, this is given as Kalmey, calamine, which is unlikely from the association with pyrites. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Great quantities of refined arsenic have been produced at the Devon Great Consols mine, by elimination from the iron pyrites contained in the various lodes. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" His bathroom walls were slabs of glossy actinolite, inlaid with cinnabar, jade, galena, pyrite and blue malachite, in representations of fantastic birds. Sjambak If there be any pyrites in the quartz, some common salt is thrown in to assist in releasing the gold from the embraces of the sulphurates, and preparing it to be seized by the mercury. Hittel on Gold Mines and Mining The gold at Mount Morgan is obtained from a lode of decomposed iron pyrites, partly underlying a bed of quartz, and at various points cropping up to the surface. The Last Voyage to India and Australia, in the 'Sunbeam' This may be residues from roasting and leaching pyrites for vitriol, etc. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The Senecan series is composed of shallow-water deposits; the Tully limestone, a local bed in New York, thins out in places into a layer of pyrites which contains a remarkable dwarfed fauna. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" They are chiefly made of crystals of various minerals, such as quartz, felspar, mica, and pyrite. Boy Scouts Handbook The First Edition, 1911 A mixture of common salt assists the decomposition of the pyrites. Hittel on Gold Mines and Mining Behind us the hills were sharp pyrites blue. Rosinante to the Road Again There can be no doubt from the explanations of Pliny and Dioscorides that misy was an oxidized pyrite, mostly iron sulphate. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z You can't take the gold out of a bit of ore any more than you can change iron pyrites inter the reel stuff. Rimrock Trail Some of you will have heard that there are smelting works to-day where the sulphurous acid, which copper pyrites supplies when it is roasted, is used for the manufacture of sulphuric acid. Aladdin of London or, Lodestar If the quartz has much iron or copper pyrites, the sluice is used to collect this material and save it for separation at some future time. Hittel on Gold Mines and Mining They kindle fire, by striking together a piece of white or yellow pyrites and a flint-stone, over a piece of touchwood. Travels in North America, From Modern Writers With Remarks and Observations; Exhibiting a Connected View of the Geography and Present State of that Quarter of the Globe The pyrites and other stones which are not mixed with alum alone, but which also contain vitriol, as is most usually the case, are both treated in the manner which I have already described. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Here is a piece of pyrites, not quite so large as the first, and so vegetable-like in its markings, that it might be mistaken for part of a branch of a tree. The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland In lead mines, the duration of life averages scarcely more than thirty-two years, and in those containing arsenical pyrites or quicksilver ores, the average is still lower. The Mines and its Wonders The pyrites ordinarily contains, or is accompanied by much gold, which it protects from amalgamation. Hittel on Gold Mines and Mining Black above, the Mimic Geotrupes is the colour of copper pyrites below; also black in all parts exposed to the light of day, the Stercoraceous Geotrupes displays a ventral surface of a glorious amethyst violet. The Glow-Worm and Other Beetles That pyrites which contains metal must be smelted in the furnace. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z To make it available for plant use, it is treated with sulphuric acid to form a soluble superphosphate; hence the importance of sulphuric acid, and its mineral sources pyrite and sulphur, in the fertilizer industry. The Economic Aspect of Geology The progress of science has, however, modified the state of things since then, as sulphur can now be obtained from pyrite or pyrite of iron. Scientific American Supplement, No. 647, May 26, 1888 This separation of the pyrites from the pulverized rock is called "concentrating the tailings," and the material collected is called "concentrated tailings." Hittel on Gold Mines and Mining It has the refulgency of copper pyrites, of gold, of Florentine bronze. The Glow-Worm and Other Beetles In this process the free sulphuric acid formed by the oxidation of pyrites reacts upon the argillaceous material to form aluminium sulphate. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The great deposits of Rio Tinto, Spain, which produce about half of the world's pyrite, were formed by replacement of slates by heated solutions from nearby igneous rocks. The Economic Aspect of Geology In England, at the present time, it is understood that two-thirds of the sulphuric acid used is manufactured from pyrites. Scientific American Supplement, No. 647, May 26, 1888 Mineralogists apply the term “pyrites” to a large group or family of minerals, compounds of metals with sulphur, or with arsenic, or with both. Golden Days for Boys and Girls Volume VIII, No 25: May 21, 1887 Where iron is present in the form of pyrites, or ferrous silicate, it does not seem to cause reversion. Manures and the principles of manuring The third process is essentially the same as the first, except that the decomposition of the pyrites was hastened by roasting. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Copper is known to be taken into solution as copper sulphate at the surface, and to be redeposited as chalcocite where these sulphate solutions come in contact with chalcopyrite or pyrite below. The Economic Aspect of Geology This was followed by a wheel-lock, wound up like a clock, and having a piece of iron pyrite, and later, a piece of flint, for producing ignition. Records of Woodhall Spa and Neighbourhood Historical, Anecdotal, Physiographical, and Archaeological, with Other Matter Iron pyrites is commonly of a bright brass-yellow color, and is found crystallized in cubes, dodecahedrons and many other forms. Golden Days for Boys and Girls Volume VIII, No 25: May 21, 1887 For the purpose of obtaining fire the Esquimaux use two lumps of common iron pyrites, from which sparks are struck into a little leathern case containing moss well dried and rubbed between the hands. Journal of the Third Voyage for the Discovery of a North-West Passage The pyrites mentioned in this paragraph may mean galena, as pyrites was to Agricola a sort of genera. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Not only has the process been duplicated in the laboratory, but the common coating of chalcocite around grains of pyrite and chalcopyrite below the water level indicates that this process has been really effective. The Economic Aspect of Geology Jim, I fancy, was a bit of a humbug, who had served on a whaler and was therefore not wholly unacquainted with iron pyrites. From Paris to New York by Land Not alone will all earthy and alkaline, but even metallic compounds, like iron pyrites, therein contained, be rapidly decomposed on the advent of the superheated water. A Girl's Ride in Iceland The iron pyrites found here are not oxidized. An African Adventure Since I have explained the nature of vitriol and its relatives, which are obtained from cupriferous pyrites, I will next speak of an acrid solidified juice which commonly comes from cadmia. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Zinc, and to a less extent lead, have been taken into solution as sulphates, with the aid of sulphuric acid resulting from the oxidation of the associated pyrite. The Economic Aspect of Geology Iron pyrites, or sulphide of iron, sometimes called "fools' gold," is a very common mineral. Commercial Geography A Book for High Schools, Commercial Courses, and Business Colleges Amulet a face with one eye of enamel, the other of pyrites from a harpoon-float of sealskin, one-third. The Voyage of the Vega round Asia and Europe, Volume I and Volume II The soil around is a red-and-white clay, strongly impregnated with sulphur and hydrogen gas; pyrites also occur. The Continental Monthly, Vol. 6, No 3, September 1864 Devoted To Literature And National Policy When the slag and the cakes melted from pyrites have been skimmed off, the alloy is carried to other furnaces. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Where pyrite is present in abundance it easily weathers out, leaving iron-stained pits and releasing sulphuric acid which decomposes the rock. The Economic Aspect of Geology Greg says that it is like compact charcoal, with particles of sulphur and iron pyrites embedded. The Book of the Damned Do not mistake the yellow iron pyrites for gold. The Western United States A Geographical Reader He is constantly testing the various tortas spread out upon the patio; to one he determines that lime must be added; to another, an opposite process must be applied by adding iron pyrites. Mexico and its Religion With Incidents of Travel in That Country During Parts of the Years 1851-52-53-54, and Historical Notices of Events Connected With Places Visited Alum is also made from crude pyrites and other aluminous mixtures. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The principal use of pyrite is in the manufacture of sulphuric acid. The Economic Aspect of Geology It was an iron cannon ball, or it was a "large nodule of iron pyrites or bisulphuret of iron." The Book of the Damned The iron pyrites in the ore contains gold which cannot be separated by the crushing process and a machine called a concentrator has been invented to save this also. The Western United States A Geographical Reader “Iron pyrites?” said the American: “by trying it with the edge of your knife.” Old Gold The Cruise of the "Jason" Brig Finally, if metal is contained in the pyrites and other rock, this material must be dried, and from it either gold, silver, or copper is made in a furnace. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Most of the countries of Europe are producers of pyrite, and important amounts are also produced in the United States and Canada. The Economic Aspect of Geology These pyrites are very extensively diffused, and are said to be worth about L.2 a ton. Chambers's Edinburgh Journal, No. 447 Volume 18, New Series, July 24, 1852 The pyrites now appears as a dark, heavy sand. The Western United States A Geographical Reader “Why isn’t it iron pyrites—the salt of iron and sulphur?” Old Gold The Cruise of the "Jason" Brig The intermediate space is filled with pyrites, and the same crushed are scattered over the wood, so that, coming in or going out, the road is flat and even. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z At the close of the war supplies of pyrite had been accumulated to such an extent that, with the prospect of reopening of Spanish importation, pyrite production in the United States practically ceased. The Economic Aspect of Geology Besides the colouring principle of the lazulite, there are always more or less mica and iron pyrites, the latter a lustrous yellow bisulphide of iron, which has often been mistaken for pellets of gold. Field's Chromatography or Treatise on Colours and Pigments as Used by Artists It is found as a mineral, but is usually obtained as a by-product in burning pyrite in the sulphuric-acid industry. An Elementary Study of Chemistry The London clay is very tenacious, and near the surface is generally of a brown colour, probably owing to the decomposition of the iron pyrites which it contains. Journal of the Proceedings of the Linnean Society - Vol. 3 Zoology In the centre of them is found greyish pyrites, almost dissolved, the size of a walnut. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Marcasite and pyrrhotite, other iron sulphide minerals, are frequently found with pyrite and are used for the same purposes. The Economic Aspect of Geology The salts, pyrites, and metals only differ from other minerals by the different circumstances under which they were accumulated, in their different proportions, and in their much greater amount of carbonic or acidific fire. Lamarck, the Founder of Evolution His Life and Work Suddenly the thought came to me that this was probably nothing but iron pyrites, or fool's gold, that I had heard and read of, but had never seen. The Cave of Gold A Tale of California in '49 The poor gentleman, who had a vast opinion of himself and always contradicted everybody about everything, meant that his soil contained a deal of silica, and that iron pyrites was abundant in it. Canada and the Canadians Volume I The equipment described for pyrites in the next paragraph would be obviously useful only for coarse material. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z During the war this use was greatly increased because of the shortage of pyrite and the large quantities of sulphuric acid necessary for the manufacture of explosives. The Economic Aspect of Geology The other impurities, all of which, except the pyrites, are soluble in water, are undesirable, as they give rise to "scum," which produces patchy colour and pitted faces on the bricks. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" The worthless pyrites is continually mistaken for gold. Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry Sulphuric acid is frequently impregnated with arsenic from the iron pyrites used in preparing the acid. Aids to Forensic Medicine and Toxicology The association of gold with pyrites is mentioned, and the pyrites is found "in some places as a complete stratum carried through horizontally, and is called a schwebender gang." De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z It requires the mining of pyrite and sulphur. The Economic Aspect of Geology Until I gave them matches, they had only the primitive means of ignition by flint and steel, which they obtained from a vein of pyrites. The North Pole Its Discovery in 1909 under the auspices of the Peary Arctic Club The first paper which bears the name of Wöhler dates from this period, and is upon the presence of selenium in the iron pyrites from Kraslitz. Scientific American Supplement, No. 365, December 30, 1882 Boil for half an hour until the oxides are dissolved and the residue looks like sand and pyrites; then add 20 c.c. of nitric acid, and boil till free from nitrous fumes. A Text-book of Assaying: For the Use of Those Connected with Mines. Tin is mentioned as found in alluvial, and also in veins, the latter being better or worse, according to the amount of pyrites, although the latter can be burned off. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The primary ores consist of pyrite, chalcopyrite, and other sulphides, with large amounts of jaspery quartz and some calcite and dolomite. The Economic Aspect of Geology Their ability to utilize the soapstone and pyrites is an illustration of their intelligence and ingenuity. The North Pole Its Discovery in 1909 under the auspices of the Peary Arctic Club But the same thing has been found in the feathers of certain birds whose color is metallic green, and it has been proven that such birds pick up and swallow shining bits of copper pyrites. In Search of the Unknown For example: 3 grams of an ore containing a good deal of pyrites and a little galena, gave, when fused with litharge, 16.5 grams of lead. A Text-book of Assaying: For the Use of Those Connected with Mines. Silver slags which have been crushed under the stamps, also fragments of silver-lead alloy and of cakes melted from pyrites, are washed in a strake of this kind. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The residue from the roasting of pyrite is a high-grade iron ore material frequently very low in phosphorus, which is desirable in making up mixtures for iron blast furnaces. The Economic Aspect of Geology Several specimens containing iron pyrites were also found. The First Landing on Wrangel Island With Some Remarks on the Northern Inhabitants In all cases this water contains a certain amount of gases derived from the decomposition of various substances, but principally from the alteration of iron pyrite, which affords sulphuretted hydrogen. Outlines of the Earth's History A Popular Study in Physiography Iron is found combined with sulphur in pyrrhotine and pyrites, and together with arsenic in mispickel. A Text-book of Assaying: For the Use of Those Connected with Mines. If pyrites and the other stone are not volatilised into fumes in a furnace of this kind, the tin which is made from the tin-stone is impure. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Before the war domestic sources supplied a fourth to a third of the domestic demand for pyrite. The Economic Aspect of Geology The gold is sometimes visible in the gneiss; and I have seen pieces whose surface is dotted with yellow spots resembling pyrites. To The Gold Coast for Gold, Vol. II A Personal Narrative What a pity good Theophilus had not begun Page 83 with the pyrites, when he would probably have made the further discovery that his worms and goats could have been spared. Arts and Crafts in the Middle Ages A Description of Mediaeval Workmanship in Several of the Departments of Applied Art, Together with Some Account of Special Artisans in the Early Renaissance Thallium is a rare metal, found in small quantities in some varieties of iron and copper pyrites, and in some lithia micas. A Text-book of Assaying: For the Use of Those Connected with Mines. If from this poor ore, with melted pyrites alone, material for cakes cannot be made, there are added other fluxes which have not previously been melted. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Sulphur is used for many of the same purposes as pyrite. The Economic Aspect of Geology The rock is of trap, greenstone, or whinstone, which miners call iron-stone and Cornishmen 'blue elvan:' this diorite, composed of felspar and the hardest hornblende, contains granular iron and pyrites like silver. To The Gold Coast for Gold, Vol. II A Personal Narrative The pyrites of sulphur and motes of iron, that formerly gleamed in the rills that trickled down its slopes, were now big as cascades, filled with carbuncles and rocks of amethyst. Tales of the Chesapeake The chief sources of nickel are these silicates, which are found in large quantity in New Caledonia; and a pyrites found in Norway, containing three or four per cent. of the metal. A Text-book of Assaying: For the Use of Those Connected with Mines. Two parts of roasted pyrites or cadmia which contain gold, are put with one part of unroasted, and are smelted together in the third furnace whose tap-hole is always open, and are made into cakes. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The replacement of pyrite by sulphur in the manufacture of sulphuric acid has continued since the war, and in the future is likely to continue to play an important part. The Economic Aspect of Geology Soon it would be worn out, like the other two, and then they would gain fire only by rubbing dry sticks, or hacking sparks from bits of flint or pyrites. Genesis At Moldova, where we were recently, the same company have large sulphuric acid works, employing as material the iron pyrites of the old mines. Round About the Carpathians The sulphur and arsenic of such minerals as mispickel and pyrites are oxidised by the hot air and pass off as sulphur dioxide and "white arsenic." A Text-book of Assaying: For the Use of Those Connected with Mines. Also in the same manner, pyrites are smelted separately if there be much of them. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Very commonly the copper sulphides are associated with large quantities of the iron sulphide, pyrite, as well as with varying amounts of lead and zinc sulphides and gold and silver minerals. The Economic Aspect of Geology It contains a large proportion of mica, a small proportion of quartz and still less feldspar, but generally an abundance of iron pyrites in very minute crystals, which, on exposure, are decomposed. The Hudson Three Centuries of History, Romance and Invention The ores have, besides, a small quantity of selenium and iron pyrites intimately mixed with the cinnabar. Scientific American Supplement, No. 312, December 24, 1881 Iron pyrites generally carries copper and is frequently associated with the above-mentioned minerals. A Text-book of Assaying: For the Use of Those Connected with Mines. Of these roasted cakes generally four parts are again mixed with one part of crude pyrites and re-melted in the same furnace. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Near the surface the copper is leached out and carried down by waters containing various solvents, particularly sulphuric acid from the oxidation of pyrite. The Economic Aspect of Geology It consists essentially in passing the hot gases from pyrites kilns, as used in the manufacture of vitriol, through large cast-iron vessels containing common salt heated to a high temperature. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association Sulphuretted or hepatic waters acquire their peculiar properties from beds of pyrites or by passing through strata of bituminous shale and fœtic-oolitic beds. Saratoga and How to See It With grey copper ores and the oxidised ores, iron pyrites is added. A Text-book of Assaying: For the Use of Those Connected with Mines. If the concentrates originated from galena they are smelted with it after having been roasted; and if from pyrites, then with pyrites. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Usually the veins consist almost entirely of graphite, but sometimes other minerals occur in important amounts, especially pyrite and quartz. The Economic Aspect of Geology The iron in water from old coal pits and shale deposits is usually present as sulphate due to the oxidation of pyrites, a sulphuret or sulphide of iron. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association An early application of the flint-and-steel principle was made by certain Esquimo tribes who obtained fire by striking a piece of quartz against a piece of iron pyrites. Artificial Light Its Influence upon Civilization It is well known that by buying the copper contents of pyrites by Cornish assay, burning off the sulphur, and converting the copper into precipitate, a large excess is obtained. A Text-book of Assaying: For the Use of Those Connected with Mines. Cadmia is also prepared by burning the stone called pyrites, which is found near Mt. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The stoppage of pyrite importations from Spain as a means of saving ships required the development of pyrite and sulphur supplies in the United States. The Economic Aspect of Geology Copper.—Sometimes, as in the neighbourhood of copper mines or of some copper pyrites deposits, a water may be contaminated with small quantities of copper. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association The author particularly mentions Mandan ceremonies, in which a white "medicine" stone, as hard as pyrites, was produced by rubbing in the hand snow or the white feathers of a bird. Sign Language Among North American Indians Compared With That Among Other Peoples And Deaf-Mutes First Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1879-1880, Government Printing Office, Washington, 1881, pages 263-552 Gold is occasionally found in a matrix of this substance, and in the assay of "concentrates" largely made up of pyrites, this oxide will be formed in the preliminary calcination. A Text-book of Assaying: For the Use of Those Connected with Mines. Gold pyrites that comes in veins is better. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z They are variously associated with a gangue of dolomite, calcite, quartz, iron pyrite, barite, and chert. The Economic Aspect of Geology This Glover tower is placed between the sulphur burners or pyrites kilns and the first lead chamber. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association Planes or crystal ghosts, sometimes with pyrite crystals, marking stages of growth in the calcite crystals, are often distinguishable. Cave Regions of the Ozarks and Black Hills With 5 grams of pyrites, a single evaporation with 20 c.c. of nitric acid will give a residue completely soluble in 30 c.c. of hydrochloric acid. A Text-book of Assaying: For the Use of Those Connected with Mines. Tin-stone is found in masses, copper ore in schist and in veins sometimes with pyrites. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z It is usually closely associated with iron pyrite in a matrix or gangue of quartz. The Economic Aspect of Geology The cast-iron vessels must be heated uniformly, and the hot pyrites kiln gases must be passed downwards through the salt in order to ensure uniform distribution. The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association It was made up of quartz, feldspar, and mica, and there were also some isolated specimens of pyrites, hornblend, tourmaline, and serpentine. Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad The Terminal Station - West The mispickel and copper and iron pyrites are converted into oxides by roasting, and are in great part removed by a subsequent washing. A Text-book of Assaying: For the Use of Those Connected with Mines. The sulfuric acid is made mostly from iron pyrite and this we have been content to import, over 800,000 tons of it a year, largely from Spain, although we have an abundance at home. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries In addition to these definite mineral forms, silver is present in many ores in an undetermined form in other sulphides, notably in galena, sphalerite, and pyrite. The Economic Aspect of Geology Sometimes they have petrified into iron pyrites or copper compounds, shining like gold, and then they make very noble thunderbolts indeed, heavy as lead, and capable of doing profound mischief if properly directed. Falling in Love With Other Essays on More Exact Branches of Science A hard, heavy, ductile metal, found native, and in many ores; of these the most important is copper pyrites, which is a sulphuret of copper. A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition. The meaning of this is, 120 parts by weight of iron pyrites contain 64 parts of sulphur and 56 parts of iron; and this is true whether the "parts by weight" be grains or tons. A Text-book of Assaying: For the Use of Those Connected with Mines. Since the shortage of shipping shut off the foreign supply we are using more of our own pyrite and also our deposits of native sulfur along the Gulf coast. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Similar occurrences of pyrite on a smaller scale are known in many places. The Economic Aspect of Geology The nodules of pyrites, often picked up on beaches, with their false appearance of having been melted by intense heat, pass muster easily with children and sailor folk for the genuine thunderbolts. Falling in Love With Other Essays on More Exact Branches of Science The bluffs or hills which reach the river at this place, on the south, contain allum, copperas, cobalt which had the appearance of soft isinglass, pyrites, and sandstone, the two first very pure. History of the Expedition under the Command of Captains Lewis and Clark, Vol. I. To the Sources of the Missouri, Thence Across the Rocky Mountains and Down the River Columbia to the Pacific Ocean. Performed During the Years 1804-5-6. One gram of iron pyrites yields about 11 grams of lead. A Text-book of Assaying: For the Use of Those Connected with Mines. It was not he that had pronounced the worthless pyrites gold, and he had but obeyed orders in bringing new cargoes of this useless rubbish to add to the weight of Albion's rock-bound shores. Historic Tales, Vol. 1 (of 15) The Romance of Reality Also the Spanish pyrite, imported ordinarily for its sulphur content, on roasting leaves a residue of iron oxide extremely low in phosphorus which is similarly used. The Economic Aspect of Geology Its quality and composition, however, vary very considerably, and small crystals of perfectly limpid quartz, called Carrara diamonds, and iron pyrites, occasionally occur, to the annoyance of the sculptor. Roman Mosaics Or, Studies in Rome and Its Neighbourhood The golden specks, however, with which it was sprinkled—really spots of yellow pyrites—rendered it useless to the gem-engravers of Pliny's time. The Seven Great Monarchies Of The Ancient Eastern World, Vol 3. (of 7): Media The History, Geography, And Antiquities Of Chaldaea, Assyria, Babylon, Media, Persia, Parthia, And Sassanian or New Persian Empire; With Maps and Illustrations. The molecule of pyrites contains two atoms of sulphur and one of iron: on referring to the table of atomic weights it will be seen that the atomic weights are—sulphur 32, and iron 56. A Text-book of Assaying: For the Use of Those Connected with Mines. No considerable or fundamental vein was found, but only brass-colored earth that contained some small bits of blue metal containing iron pyrites, all of them very soft. The Philippine Islands, 1493-1898 — Volume 20 of 55 1621-1624 Explorations by early navigators, descriptions of the islands and their peoples, their history and records of the catholic missions, as related in contemporaneous books and manuscripts, showing the political, economic, commercial and religious conditions of those islands from their earliest relations with European nations to the close of the nineteenth century. The elimination of pyrite imports from Spain during the war, therefore, was a considerable contributing factor to the stringency in low-phosphorus iron ores. The Economic Aspect of Geology On shore we found a great quantity of cubical pyrites in a grey matrix. Journal of a Voyage from Okkak, on the Coast of Labrador, to Ungava Bay, Westward of Cape Chudleigh Undertaken to Explore the Coast, and Visit the Esquimaux in That Unknown Region Careful dissolving of the pyrites and gangue, so as to leave the gold intact, failed to find it in any larger diameter. Scientific American Supplement, No. 841, February 13, 1892 One gram of copper pyrites, blende, fahlerz, or mispickel, yields 7 or 8 grams of lead, whilst 1 gram of antimonite will give 6, and 1 gram of galena only a little over 3 grams. A Text-book of Assaying: For the Use of Those Connected with Mines. For the purpose of obtaining fire, the Esquimaux use two lumps of common iron pyrites, from which sparks are struck into a little leathern case containing moss well dried and rubbed between the hands. Three Voyages for the Discovery of a Northwest Passage from the Atlantic to the Pacific, and Narrative of an Attempt to Reach the North Pole, Volume 2 This occurs in nature in small scales, crystals, and irregular masses, and also in microscopic particles mechanically mixed with pyrite and other sulphides. The Economic Aspect of Geology When calcined zinciferous pyrites have to be examined, the estimation of zinc is similar to that employed in the analysis of zinc ore. Scientific American Supplement, No. 455, September 20, 1884 The sixth case is covered with Sulphurets, chiefly of iron, these being commonly known as iron pyrites. How to See the British Museum in Four Visits By Pot Assay.—Roasted cupriferous pyrites containing small quantities of gold and silver comes under this heading. A Text-book of Assaying: For the Use of Those Connected with Mines. The Pearl district contributed good specimens of oxidized quartz and granite gangue, iron and arsenical pyrites with zinc blend, and a showing of galena and copper sulphides. Final Report of the Louisiana Purchase Exposition Commission The ore is mainly gold telluride, in a gangue of quartz together with pyrite and a variety of minerals characteristic of hot-water solutions. The Economic Aspect of Geology The mirrors of obsidian have the same beautifully polished surface as the obsidian mask shows; and those made of nodules of pyrites, cut and polished, are worth notice. Anahuac : or, Mexico and the Mexicans, Ancient and Modern They kindled fire by striking together a piece of iron pyrites and touchwood, and never travelled without a small bag containing such materials. Pioneers in Canada This is because I have assumed in the calculations that the grains of copper pyrites, for example, were all copper pyrites and the particles of gangue were free from copper. A Text-book of Assaying: For the Use of Those Connected with Mines. The general color scheme was that of copper and iron pyrites. Final Report of the Louisiana Purchase Exposition Commission Silver is less soluble than copper and zinc, but more soluble than gold; and to some extent it is removed in solution, particularly where the oxidation of pyrite forms ferric sulphate. The Economic Aspect of Geology I have septaria of this kind, in which, besides pyrites, iron-ore, calcareous spar, and another that is ferruginous and compound, there is contained siliceous crystals; a case which is not so common. Theory of the Earth, Volume 1 (of 4) Take three drachms of gum bdellium, put the stone pyrites on the coals, and let her take the fumes into her womb. The Works of Aristotle the Famous Philosopher Containing his Complete Masterpiece and Family Physician; his Experienced Midwife, his Book of Problems and his Remarks on Physiognomy For example, this occurs in the case of a mixture of pyrites with oxide of iron, or in a mixture of sulphides and sulphates. A Text-book of Assaying: For the Use of Those Connected with Mines. In metallic products there were iron ores, lead and zinc, and pyrites. Final Report of the Louisiana Purchase Exposition Commission Small quantities of gypsum are formed also when pyrite and other sulphides oxidize to sulphuric acid and this acid acts on limestone. The Economic Aspect of Geology I have examined this specimen, and find it to be the common schistus of that country, only containing many bivalve shells and fragments of entrochi and madrapore bodies, and mixed with pyrites. Theory of the Earth, Volume 1 (of 4) Nevertheless, he says, when pyrites seams are avoided and the lignite is properly handled, it forms a valuable fuel, especially for local consumption. The Story of the Philippines and Our New Possessions, Including the Ladrones, Hawaii, Cuba and Porto Rico The Eldorado of the Orient How would blende compare with pyrites as a source of sulphur for sulphuric acid making? A Text-book of Assaying: For the Use of Those Connected with Mines. I have his I.O.U. for the amount of my fee for assaying several specimens from his claim, said specimens being all iron pyrites. Stories by American Authors, Volume 1 Before and during the war, commercial conditions might have shown the desirability of hunting for pyrite, but more recent developments in the situation cast some doubt on this procedure. The Economic Aspect of Geology It is wood petrified with calcareous earth, and mineralised with pyrites. Theory of the Earth, Volume 1 (of 4) It might better be characterized as a highly carbonized lignite, likely to contain much sulphur as iron pyrites, rendering them apt to spontaneous combustion and injurious to boiler plates. The Story of the Philippines and Our New Possessions, Including the Ladrones, Hawaii, Cuba and Porto Rico The Eldorado of the Orient The deposition of galena, blende, and pyrite in the Galena lead mines still continues. Scientific American Supplement, No. 446, July 19, 1884 The ground here consists of large beds of pipe-clay, in some places perfectly white, in others of a bluish or black colour, from the presence of iron pyrites. The Mirror of Literature, Amusement, and Instruction Volume 13, No. 363, March 28, 1829 To go ahead blindly in such a case, on the assumption that the pyrite market would in some fashion readjust itself, would not be reasoned exploration. The Economic Aspect of Geology It is dispersed through this stone in rounded masses of all sizes from a nut to a pin's head; and many of these are mixed with pyrites. Theory of the Earth, Volume 1 (of 4) The floor of the cavern was covered with heaps of water-worn fragments of quartzose rock, containing copper pyrites, in some of which the cavities were covered by a deposit of greenish calcedony. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 1 Among them were specimens of copper pyrites in quartz, sulphate of strontian, foliated gypsum, and numerous calcareous petrifactions. Personal Memoirs of a Residence of Thirty Years with the Indian Tribes on the American Frontiers Probably the association of ideas was not with the flint as a fire-stone, though the fact that a piece of flint struck with a nodule of pyrites will emit a spark was not unknown. American Hero-Myths A Study in the Native Religions of the Western Continent The ore is yellow pyrites, which, as I have already remarked, before the arrival of the English, was not supposed to contain a particle of copper. The Voyage of the Beagle But, finding many bodies of pyrites contained within that solid flint, it is said, that, when the calcareous body was flintified, there were left in it cavities which were afterwards filled with pyrites. Theory of the Earth, Volume 1 (of 4) It is made on a large scale by the oxidation of iron pyrites. The Gutenberg Webster's Unabridged Dictionary Section C Straight from the ocean's depths rose towering cliffs, shot with brown and blues and greens—withered moss and lichen and the verdigris of copper, and everywhere the rusty ocher of iron pyrites. The Land That Time Forgot While the two governments were exchanging diplomatic notes, fifteen patents were taken out in England for the extraction of sulphuric acid from the limestones, iron pyrites, and other mineral substances in which England abounds. System of Economical Contradictions; or, the Philosophy of Misery But since about 1860 sulphuric acid has been more largely made from iron or copper pyrites. The Project Gutenberg Encyclopedia Volume 1 of 28 These cavities were first open to the outside of the flinty body; but now the pyrites with which they had been filled is insulated in the solid flint. Theory of the Earth, Volume 1 (of 4) A coarse black rock carrying magnetite and pyrites in considerable quantities. The Long Labrador Trail A layer of iron pyrites extending from Los Llanos all the way to Sabana la Mar was believed by its discoverers to be a gold mine. Santo Domingo A Country with a Future Earthquake from steam 150 Warm springs not from decomposed pyrites. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation All coal contains iron pyrites, and this mineral again is contaminated with arsenic. The Project Gutenberg Encyclopedia Volume 1 of 28 However, the elder man was acquainted with the use of fire, which he probably obtained by striking flints on blocks of iron pyrites. English Villages The copper pyrites are roasted, dissolved in dilute sulphuric acid, and the liquid thus obtained is submitted to electrolysis. Scientific American Supplement, No. 433, April 19, 1884 My friends, this is iron ore, this pyrites, this clay, this limestone, this charcoal. The Mysterious Island The walls of cretaceous rock furnished him with shelter under its ledges of overhanging beds, flints out of which to fashion his tools, and nodules of pyrites wherewith to kindle a fire. Castles and Cave Dwellings of Europe Other mineral products are graphite, garnet used as an abrasive, pyrite and zinc ore. The Project Gutenberg Encyclopedia Volume 1 of 28 The Eskimos employ for this purpose pieces of quartz and iron pyrites. Scientific American Supplement, No. 392, July 7, 1883 The form of the copper pyrites is shown in Fig. Scientific American Supplement, No. 344, August 5, 1882 And it was so in this instance, as of the two specimens brought back by Cyrus Smith one was magnetic iron, and the other pyrites or sulphuret of iron. The Mysterious Island The water was full of iron pyrites, and had first lined the tube with iron crystals and then filled up the whole hollow with a frosted network of the same. The Naturalist on the Thames The ore is found in a sort of chloritic slate and iron pyrites which follow the ledge all around. Scientific American Supplement, No. 363, December 16, 1882 He had not gone far before he discovered that iron pyrites was the only "gold" in that locality. Jack of the Pony Express Iron pyrites is always known by its brassy metallic aspect and great hardness. Scientific American Supplement, No. 344, August 5, 1882 The whole day was employed in bringing a quantity of these pyrites to the Chimneys, and by evening they had several tons. The Mysterious Island The apparatus is so easy of installation that it may be applied without much expense to pyrites furnaces already in operation. Scientific American Supplement, No. 299, September 24, 1881 The ore itself is a fine-grained pyrite, with a grayish color, and it is well suited by its sulphur and low copper contents, as well as by its properties for heap roasting. Scientific American Supplement, No. 363, December 16, 1882 Mrs. B. There are hidden in the bowels of the earth, immense quantities of inflammable matter: pyrites, bitumens, and other substances of a similar nature, which only require moisture to put their fires in motion. Domestic Pleasures, or, the Happy Fire-side Copper pyrites, by its aspect from the other minerals, and from iron pyrites by its inferior hardness and less gravity. Scientific American Supplement, No. 344, August 5, 1882 Suddenly the idea flashed across my mind that it might be iron pyrites. History of California The pyrites is fed from the hopper, A, into a distributing box, B, furnished with a valve which is maneuvered by a lever. Scientific American Supplement, No. 299, September 24, 1881 After having expended very large sums, it was discovered that the pyrites contained no trace whatever of gold. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 Sweden is particularly active in this traffic, but I understand that sulphur pyrites are sent from Norway, and sulphuric acid made therefrom is an absolute essential to the manufacture of munitions of war. My Four Years in Germany The floor of the cavern was covered with heaps of water-worn fragments of quartzoze rock containing copper pyrites, in some of which the cavities were covered by a deposit of greenish calcedony. The History of Australian Exploration from 1788 to 1888 Other deposits are iron-stained and have the appearance of the decomposed iron pyrites which abounds in this neighbourhood. The Land of Midian — Volume 1 The granite of the Cerro Duida is full of veins, partly open, and partly filled with crystals of quartz and pyrites. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 A slow decomposition of the pyrites, which probably act as so many little galvanic piles, renders the waters alumiferous, that circulate across the bituminous lignites and carburetted clays. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 If these waters were heated by the decomposition of pyrites, there would be some chalybeate taste or sulphureous smell in them. The Botanic Garden. Part II. Containing the Loves of the Plants. a Poem. With Philosophical Notes. In other words, there existed in the neighborhood of this mountain enormous fields of nitrate of soda and of iron pyrites, which were necessary for the manufacture of melimelonite. Topsy-Turvy I did not observe any, but found a few minute specks of pyrites, and partially resembling mica. The Land of Midian — Volume 1 The works were directed to a stratum of cellular quartz,* full of polyhedric cavities, mixed with iron-ore, containing auriferous pyrites and small grains of gold, sometimes, it is said, visible to the naked eye. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Some copper pyrites appear among these veins accompanied, it is said, by silvery-grey copper. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 3 When tested by cyanide of potassium the gold in the ore often changes into iron pyrites. The Postmaster's Daughter When he saw that pyrites on Idaho Bar he stopped dead. The Magnetic North The upper or superficial white yielded only, as far as our engineer could judge, a little copper and bright knobs of pyrites. The Land of Midian — Volume 1 A few strata of gneiss abound in silvery mica, and contain, instead of garnets, an immense quantity of small octohedrons of pyrites. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Iron Pyrites.—A detector that uses a crystal of iron pyrites for its sensitive element. The Radio Amateur's Hand Book The supposed gold mine of Cuchivano, which was the object of our examination, is nothing but an excavation cut into one of those black strata of marl, which contain pyrites in abundance. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 "Scientifically known as 'iron pyrites'" explained the Professor. The Pony Rider Boys in the Rockies Or, the Secret of the Lost Claim Simon was too distracted to heed, and Alan went hastily up to the rooms, where he found some copper pyrites in process of oxidation, giving forth volumes of strangling sulphur smoke. Masters of the Guild It differs only by containing neither quartz, garnets, nor pyrites. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Ferron.—A detector in which iron pyrites are used as the sensitive element. The Radio Amateur's Hand Book The sulphurous pyrites are found, some massive, and others crystallized and disseminated in the rock; their colour, of a very clear golden yellow, does not indicate that they contain copper. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 Thine are the outcrops' glittering blocks, The quartz where the rich pyrites gleam, The golden treasure of unhewn rocks And the loose gold in the stream. Last Poems They are a kind of pyrites, and are as regular; 'tis certain they have been "in fluore". The Natural History of Wiltshire An apothecary who had been ruined by an unhappy propensity for working mines, accompanied us in our excursion to the Serro de Chacao, very rich in auriferous pyrites. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Galena is the crystal that is generally used, for, while it is not quite as sensitive as silicon and iron pyrites, it is easier to obtain a sensitive piece. The Radio Amateur's Hand Book The marly stratum crosses the torrent; and, as the water washes out metallic grains, the people imagine, on account of the brilliancy of the pyrites, that the torrent bears down gold. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 "No! pyrites is heavier than mica—and gold than pyrites." It Is Never Too Late to Mend Thus he formed, for instance, pumice-stone, feldspar, mica, iron pyrites, &c. artificially. Familiar Letters on Chemistry The gold is contained in pyrites, which are found sometimes disseminated almost imperceptibly in the whole mass of the gneiss,* and sometimes united in small veins of quartz. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Something about pyrites—I have a vague recollection of old chemistry lessons. The Whirlpool In vain I repeated that alum and sulphate of iron only could be obtained from this supposed gold mine; they continued picking up secretly every bit of pyrites they saw sparkling in the water. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 The most common petrifying materials are calcite, silica, and pyrite. The Elements of Geology Hundreds of thousands of pounds weight of sulphuric acid were prepared from iron pyrites, while the high price of sulphur consequent upon the monopoly lasted. Familiar Letters on Chemistry We saw between Muitaco and the island of Ceiba a hill entirely composed of balls with concentric layers, in which we perceived a close mixture of hornblende and feldspar, with some traces of pyrites. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Scraping up some of the stuff, it required only a slight examination to determine its main constituents--sandstone and magnesia, the pyrites being slightly mixed, and silver showing itself in even smaller quantity. Atlantis : the antediluvian world Can these flames be attributed to the decomposition of water, entering into contact with the pyrites dispersed through the schistose marl? or is it inflamed hydrogen that issues from the cavern of Cuchivano? Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 But to the depth of about fifty feet from the surface the pyrite of the vein has been dissolved, leaving a rusty, cellular quartz with grains of the insoluble gold scattered through it. The Elements of Geology Chili, copper pyrites with gold in. —, walls cracked by earthquake in. The Student's Elements of Geology As, S, etc., come from the pyrites used in making H2SO4. An Introduction to Chemical Science When the tailings contain a quantity of decomposed pyrites, partly oxidised, the acidity caused by the freed sulphuric acid requires to be neutralised by an alkali, caustic soda being usually employed. Getting Gold: a practical treatise for prospectors, miners and students In it we can recognize traces of quartz and pyrites. Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 The strata include veins of quartz, carbonate of lime, and iron pyrites; they have been dislocated by an injected mass of greenish-brown feldspathic trap. Geological Observations on South America It is also an important circumstance that near the point of contact, both the granite and the secondary rocks become metalliferous, and contain nests and small veins of blende, galena, iron, and copper pyrites. The Student's Elements of Geology Examine brimstone, flowers of sulphur, pyrite, chalcopyrite, sphalerite, galenite, gypsum, barite. An Introduction to Chemical Science Careful dissolving of the pyrites and gangue so as to leave the gold intact failed to find it in any larger diameter. Getting Gold: a practical treatise for prospectors, miners and students M. Dupont picked up in the Chaleux Cave a kidney-shaped piece of iron pyrites, hollowed out in a peculiar manner, which had evidently been used to obtain the precious spark. Manners and Monuments of Prehistoric Peoples "I dipped a little west to-day," Ruth went on, without heeding the brotherly remonstrance, "and struck quartz and pyrites." The Twins of Table Mountain In one case, where the fissure is partially filled up with silica inclosing iron and copper pyrites, gold has also been found in the vein-stone. The Student's Elements of Geology The most abundant compound of Cu is chalcopyrite, or copper pyrites, CuFeS2. An Introduction to Chemical Science The close relation which the richness of gold veins bears to the prevalence of pyrites has been long familiar both to scientific observers and to practical miners. Getting Gold: a practical treatise for prospectors, miners and students Concho took from his saddle bags a lump of greyish iron ore, studded here and there with star points of pyrites. The Story of a Mine In all appearance it is impregnated with nitre, if not with something more mischievous: we know that mundic, or pyrites, very often contains a proportion of arsenic, mixed with sulphur, vitriol, and mercury. Travels through France and Italy Into such openings, quartz, accompanied by sulphurets of iron and arsenical pyrites, was introduced. The Student's Elements of Geology You see them slugs I had made myself outer brass filings and iron pyrites, and used to slap 'em down on the boys for a bluff in a game of draw poker. Drift from Two Shores A few small crystals of pyrite were then placed in the bottle of solution, and the gold began immediately to precipitate on them. Getting Gold: a practical treatise for prospectors, miners and students Such was the case with the two specimens which Cyrus Harding had brought back, one of magnetic iron, not carbonated, the other a pyrite, also called sulphuret of iron. The Mysterious Island When, in Neolithic times, men commonly bury the dead, and put some of their personal property in the grave with them, the fire-kindling apparatus we find is a flint and a piece of iron pyrites. The Story of Evolution The remains are often highly charged with pyrites. The Student's Elements of Geology I afterwards filed off the gold from one side of a cube crystal to show the pyrites itself and the thickness of the surrounding coating, which is thicker than ordinary notepaper. Getting Gold: a practical treatise for prospectors, miners and students It was noticeable, however, that the pyrite crystals which were free from zinc, galena, or other extraneous matter received no gold precipitate. Getting Gold: a practical treatise for prospectors, miners and students My friends, this is iron mineral, this a pyrite, this is clay, this is lime, and this is coal. The Mysterious Island Iron, copper, and arsenical pyrites, antimony, galena, molybdenite, zinc blende, and wolfram were treated in the above manner with similar results. Getting Gold: a practical treatise for prospectors, miners and students Such masses of pyrites are by no means uncommon in our drifts or the beds of our mountain streams. Getting Gold: a practical treatise for prospectors, miners and students The gold is an after deposit to the pyrites, and, as Mr. Skey was the first to explain, due to its direct reducing influences. Getting Gold: a practical treatise for prospectors, miners and students The lode is a large irregular one of pure arsenical pyrites carrying, in addition to gold and silver, nickel and cobalt. Getting Gold: a practical treatise for prospectors, miners and students Now the beach supplied sand, lime supplied chalk, sea-weeds supplied soda, pyrites supplied sulphuric acid, and the ground supplied coal to heat the kiln to the wished-for temperature. The Mysterious Island |
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