| 单词 | pyrites |
| 例句 | 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 That is gold," said he; "there is no iron pyrites about that. 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 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 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 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 "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 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 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 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 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 "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 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 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 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 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 "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 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 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 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 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 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 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 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 "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 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 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 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 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 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 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 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 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 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 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 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 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. 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 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 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 Lampadius, who obtained it by heating a mixture of charcoal and pyrites. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" 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 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" Other minerals extracted include salt, kaolin, chalk, talc, asbestos, gypsum, mica, fluorite, quartzite, antimony, lime, sandstone, slate, and pyrites. Area Handbook for Bulgaria 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 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" 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 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 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 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" 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 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" 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 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 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" 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 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 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" 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 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 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" 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" He certainly would not run away with his pockets filled with pyrites. Elam Storm, The Wolfer Or, The Lost Nugget 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 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" 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' Behind us the hills were sharp pyrites blue. Rosinante to the Road Again A mixture of common salt assists the decomposition of the pyrites. Hittel on Gold Mines and Mining 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 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 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 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 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 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 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 The pyrites ordinarily contains, or is accompanied by much gold, which it protects from amalgamation. Hittel on Gold Mines and Mining 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 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 It has the refulgency of copper pyrites, of gold, of Florentine bronze. The Glow-Worm and Other Beetles 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 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 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 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 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 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 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 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 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 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 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 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 “Iron pyrites?” said the American: “by trying it with the edge of your knife.” Old Gold The Cruise of the "Jason" Brig 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 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 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 “Why isn’t it iron pyrites—the salt of iron and sulphur?” Old Gold The Cruise of the "Jason" Brig 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 The pyrites now appears as a dark, heavy sand. The Western United States A Geographical Reader 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 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 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 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 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 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 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 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 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. 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 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 Several specimens containing iron pyrites were also found. The First Landing on Wrangel Island With Some Remarks on the Northern Inhabitants 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 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. 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 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 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 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. 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 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 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 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. 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 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 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 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. 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 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 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 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 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. 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 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 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 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 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. 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. 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 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 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. 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. 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 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 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. 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 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. 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 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. 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. 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 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 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. 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 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 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 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 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 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 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 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. The general color scheme was that of copper and iron pyrites. Final Report of the Louisiana Purchase Exposition Commission 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 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 One gram of iron pyrites yields about 11 grams of lead. 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 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 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 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. 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 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 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 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. 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 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) 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 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. It is made on a large scale by the oxidation of iron pyrites. The Gutenberg Webster's Unabridged Dictionary Section C 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) 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 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. 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 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. All coal contains iron pyrites, and this mineral again is contaminated with arsenic. The Project Gutenberg Encyclopedia Volume 1 of 28 Earthquake from steam 150 Warm springs not from decomposed pyrites. The Botanic Garden A Poem in Two Parts. Part 1: the Economy of Vegetation 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 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. 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 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 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 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 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 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 whole day was employed in bringing a quantity of these pyrites to the Chimneys, and by evening they had several tons. The Mysterious Island 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 Suddenly the idea flashed across my mind that it might be iron pyrites. History of California 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 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 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 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 Chili, copper pyrites with gold in. —, walls cracked by earthquake in. The Student's Elements of Geology 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 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 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 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 most abundant compound of Cu is chalcopyrite, or copper pyrites, CuFeS2. 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 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 "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 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 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 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 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 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 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 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 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 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 |
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