| 单词 | galena |
| 例句 | Soon they’d hear Mama calling them from the galena, a scold in her voice. In the Time of the Butterflies 1994-01-01T00:00:00Z He indicates over his shoulder where Minerva and Lio are immersed in an intent conversation in a comer of the galena. In the Time of the Butterflies 1994-01-01T00:00:00Z And they recovered decorative beads made from copper and galena that likely originated in central North America. In Miami, a modern clash over a 2000-year-old archaeological site 2023-04-10T04:00:00Z Cubic cleavage of galena; note how the cleavage surfaces show up as different but parallel layers in the crystal. An Introduction to Geology 2017-01-01T00:00:00Z Traces of the mineral galena - lead sulphide - a substance that was crushed and mixed with oil as make-up, was found on the site, archaeologists said. HS2: Vast Roman settlement found by archaeologists 2022-01-11T05:00:00Z Hall said the increase stemmed from a greater concentration of the mineral galena in the mined rock. EPA report: Red Dog Mine as major chemical release source 2019-03-09T05:00:00Z Extracting silver from galena involves boiling off the lead. Arctic ice brings an understanding of ancient Europe’s economy 2018-05-17T04:00:00Z As well as its tourist-friendly natural beauty, the area's volcanic and limestone geology also provided the perfect conditions for mineralising the lead sulphide ore called galena. The fatal attraction of lead 2014-10-11T04:00:00Z See the cleavage surfaces on galena above or plagioclase below. An Introduction to Geology 2017-01-01T00:00:00Z Ar. alÐkohl a powder of antimony or galena, to paint the eyebrows with. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z A name given by English miners to sphalerite, or zinc blende; Ð called also false galena. Webster's Unabridged Dictionary (2nd 100 Pages) 2012-03-24T02:00:19.387Z This corresponds to the spread of Phoenician traders and settlers from their home cities in the Levant into the western Mediterranean, and the consequent exploitation of galena mines in Iberia. Arctic ice brings an understanding of ancient Europe’s economy 2018-05-17T04:00:00Z Towards 1680, a radical change seems to have taken place in the way of making the ware, by substituting common salt for the galena in the glazing process. British Manufacturing Industries Pottery, Glass and Silicates, Furniture and Woodwork. 2012-02-26T03:00:18.883Z The Kentucky galena cannot be economically separated from the containing heavy spar. The Business of Mining A brief non-technical exposition of the principles involved in the profitable operation of mines 2012-02-18T03:00:17.387Z Salt, fluorspar and galena crystallize in simple cubes. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Andy had a bang-up mine, galena ore—not gold, you understand, but often pays better. The Crux 2012-01-12T03:00:12.630Z The proportion of the lead varies from 20 to 25% in the galenas and the blends contain from 15 to 40% of zinc. Guatemala, the country of the future 2011-12-12T03:00:29.630Z For common cheap crockery a soft lead glaze, often galena, is generally used. Pottery, for Artists Craftsmen & Teachers 2011-12-10T03:00:15.097Z 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 There it forms a large deposit, in a granitic vein running through gneiss, and is accompanied by quartz, siderite, galena, blende, chalcopyrite, &c. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" 2012-01-22T03:00:24.397Z Naevius: We see that this is of the colour of galena. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The minerals include quartz and gold, silver and galenas, copper, coal and lignite, manganese, asbestos, graphite, kaolin, opals, slate, alum, marble, silver, mica, iron, sulphur, lead. Guatemala, the country of the future 2011-12-12T03:00:29.630Z It contained thirty shells, several large flint blades, other large flint implements of unknown use ... animal bones, projectile points, and a small piece of galena. Villages of the Algonquian, Siouan, and Caddoan Tribes West of the Mississippi 2011-11-02T02:00:10.087Z I have seen samples of galena from Cebú which was said to be auriferous, but I have never heard that any of these ores have been worked anywhere in the islands. The Inhabitants of the Philippines 2011-11-23T03:00:21.653Z 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 hard kind is not friable like galena, but can be cut. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Zinc, copper, lead, and silver predominate in these regions, being generally found in argentiferous blends and galenas, and sometimes both metals in conjunction with carbonates of copper. Guatemala, the country of the future 2011-12-12T03:00:29.630Z In addition, lead-bearing veins now and then crop up, the crystals of galena being disseminated through masses of fluor-spar, calc-spar, limestone and clay, which fill fissures between tilted walls of limestone and hard quartzose sandstone. Etidorhpa or the End of Earth. The Strange History of a Mysterious Being and The Account of a Remarkable Journey 2011-10-18T02:00:20.997Z If it should be found profitable to smelt the gold-bearing ores, as is so splendidly done at Denver, Col., the galena will be necessary to the success of the process. The Inhabitants of the Philippines 2011-11-23T03:00:21.653Z Gold in galena or other lead ores is invariably recovered in the refining or treatment of the lead and silver obtained. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" 2011-10-31T02:00:28.703Z These concentrates—mostly galena—were smelted in low furnaces and the lead was subsequently cupelled. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z A somewhat varying vein of galena, which is silver-lead, was worked there, and Saxton had, on several occasions, declined an offer to buy it, made on behalf of a company. A Damaged Reputation 2011-10-17T02:00:16.117Z By the action of the oxygen of the air on the fume produced by the roasting and subsequent volatilization of galena, this fine, white, amorphous pigment is made. Paint Technology and Tests 2011-09-15T02:00:12.263Z Coarsely grained galena is used for glazing pottery, and is then known as “potters’ ore” or alquifoux. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z At the shoals, traces of galena and calcareous spar occur. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z 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 Yes," he said, "that's most certainly galena, and carrying good metal by the weight of it. A Damaged Reputation 2011-10-17T02:00:16.117Z Sublimed blue lead is made by burning coarsely broken lumps of galena, admixed with bituminous coal, in a special form of furnace. Paint Technology and Tests 2011-09-15T02:00:12.263Z Copper-carbonate stains were to be seen on many of the rock-ledges and I was able to trace a narrow vein of galena for a considerable distance. Lodges in the Wilderness 2011-06-15T02:00:17.057Z The richest species of galena, of which we have any account, is that of Durham, England. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z It is almost the colour of galena, but of entirely different components. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z He noted that the potters applied “the galena native sulphide of lead for the glaze, no doubt originally dusted on to the ware, as with the older potters elsewhere.” North Devon Pottery and Its Export to America in the 17th Century 2011-05-14T02:00:10.023Z If the addition of heat will increase the effect of such a solution, it may become possible to separate, by means of the continuous jig, minerals so near in specific gravity as barite and galena. The Galaxy Vol. XXIII?March, 1877.?No. 3 2011-01-31T03:00:16.193Z The cubic cleavage, which is so prominent a feature in galena, is here present only in traces. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" When ores of lead contain any considerable portion of silver, they assume a fine steel grain; and the crystals, which are smaller than in common galena, oftener affect the octahedral, than the cubical figure. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z To the first class belongs galena, composed of lead juice and of that material which forms the substance of opaque stone. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Surface Treatment: Glazed with powdered galena on interiors of containers, never externally. North Devon Pottery and Its Export to America in the 17th Century 2011-05-14T02:00:10.023Z Later, still better crystals were found in another Cornish mine, namely, Herodsfoot mine near Liskeard, which was worked for argentiferous galena. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" Blende occurs in metalliferous veins, often in association with galena, also with chalcopyrite, barytes, fluorspar, &c. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" The ore exclusively worked is the common galena, or sulphuret of lead, with a broad glittering grain. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z Nevertheless tin-stone is not far removed from the pure white tin which is melted out of them, and galena, from which lead is obtained, differs little from that metal itself. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The lead ore, or galena, which contains also gold, silver, and copper, is brought from Utah. Harper's Round Table, September 3, 1895 The Springs Reef, Belingwe district, exhibits consisted of galena, copper and gold, and appeared very fine. Through South Africa His Visit to Rhodesia, the Transvaal, Cape Colony, Natal The mineral products of Dr�me include lignite, blende, galena, calamine, freestone, lime, cement, potter’s clay and kaolin. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 7 "Drama" to "Dublin" It is the red mineral clay, which, in some of its conditions, yields beds of galena throughout the mine country, bearing fragments of quartz in some of its numerous varieties. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z Of the first three, galena is certain enough, but while he obviously was familiar with the alteration lead products, his descriptions are inadequate and much confused with the artificial oxides. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The galena limestone of the North American Trenton rocks is mostly a dolomite. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" Sulphide galena was found in some of the quartz. Through South Africa His Visit to Rhodesia, the Transvaal, Cape Colony, Natal An exceptionally rich copper mine exists at Arghana Maden, but it is very imperfectly worked; galena mineral oil and silicious sand are also found. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" The chief ore of lead smelted is galena. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z 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 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" The lower limestone of the eastern portion of the county has been found to contain several very large deposits of argentiferous galena. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" Many substances were employed in ancient medicine: galena was the basis of a valuable Egyptian cosmetic and drug; the arsenic sulphides, realgar and orpiment, litharge, alum, saltpetre, iron rust were also used. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" Sometimes these expand in the shape of caves, where masses of galena occur. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z But the distinction between them can be easily determined, for galena may be ground to powder in a mortar with a pestle, but this treatment flattens out this kind of rudis silver. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z These ores occur as small granules of galena in a soft sandstone, their origin being still a mooted point. The Galaxy, Volume 23, No. 2, February, 1877 You will need a crystal detector–I should try galena first–and a so-called “cat’s whisker” with which to make contact with the galena. Letters of a Radio-Engineer to His Son His bathroom walls were slabs of glossy actinolite, inlaid with cinnabar, jade, galena, pyrite and blue malachite, in representations of fantastic birds. Sjambak 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 But lead, its ashes, red-lead, ochre, and litharge, are more efficacious for ores which melt easily; hearth-lead for those which melt with difficulty; and galena for those which melt with greater difficulty. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Well, we found some galena "floats" in a dry gully on the other side of the valley. The Cariboo Trail A Chronicle of the Gold-fields of British Columbia They were melting down the galena, letting it flow through the rocks into a slanting trench that led to a square mold dug in the earth. Shaman It had nothing in it but some mica and galena, but Russell had given it as his opinion that it was the gold-bearing rock of the region. Rimrock Trail 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 statements in Pliny are a hopeless confusion of molybdaena and galena. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Jessie had bought a galena crystal mounted, as that was more satisfactory, the book said. The Campfire Girls of Roselawn Or, a Strange Message from the Air One of the bucks was standing at the mine entrance holding a skin sack that appeared to be full of chunks of galena, lead ore. Shaman A crystal of galena causes the sensations of hardness, of weight, of cubical form, of gray color, and many others between which we can trace no interdependence. A System Of Logic, Ratiocinative And Inductive It occurs in some of the mines as a crust, or thin layer, on ores of galena. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z Enough, however, remains to demonstrate that the galena was smelted in small furnaces at low heat, with forced draught, and that it was subsequently cupelled. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Some of the lead and zinc deposits of the Mississippi Valley outcrop at the grass roots as varying mixtures of iron oxide, galena, chert, and clay, though they seldom project above the general surface. The Economic Aspect of Geology When it is in combination with lead and zinc, its very ready precipitation from solution by the galena leaves it in combination more predominantly with the lead. Principles of Mining Valuation, Organization and Administration This was, unquestionably, not the harmless plumbago to which that name is now usually given, but galena, or plumbum nigrum, a native sulphuret of lead, probably used for a glaze by the potters of Charlestown. The Trial and Execution, for Petit Treason, of Mark and Phillis, Slaves of Capt. John Codman Who Murdered Their Master at Charlestown, Mass., in 1755; for Which the Man Was Hanged and Gibbeted, and the Woman Was Burned to Death. Including, Also, Some Account of Other Punishments by Burning in Massachusetts The ore is galena, accompanied by the carbonate of lead, and the earthy oxide of lead; the latter of which is worked in the large way, as is said, to a profit. Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas 2011-07-10T02:00:18.883Z Naevius.—We see that this is of the colour of galena. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z 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 With the point of his pick he had hooked out a lump of galena as big as his head! The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado Having taken some specimens with him, he made inquiries in Adelaide, and learned that the substance he had discovered was galena, a mineral in which sulphur is combined with lead and small quantities of silver. History of Australia and New Zealand From 1606 to 1890 Lead ores, mainly galena or lead sulphide, occur abundantly in the Rocky Mountains, Colorado, Idaho, and Utah, producing more than half the total output of the United States. Commercial Geography A Book for High Schools, Commercial Courses, and Business Colleges The hard kind is not friable like galena, but can be cut. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z The principal lead mineral is the sulphide, galena, from which the great bulk of the world's lead is derived. The Economic Aspect of Geology So as to prevent my raising money on it, and so keep me tied up in town while they skipped out to look for that vein of galena. The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado Small portions of sulphate of strontia, galena, and blende, with rhomb spar, occur in the upper portion of the group. Old Mackinaw The Fortress of the Lakes and its Surroundings The invention of a new type of self-recovering electric receiver made of galena was the fore-runner of application of crystal detectors for extending the range of wireless signals. Sir Jagadis Chunder Bose His Life and Speeches These deposits of argentiferous galena were extensively worked before 500 B.C. and while the evidence of concentration methods is ample, there is but little remaining of the ancient smelters. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z I know of beds of galena extending for more than a hundred miles; and, in some tracts, magnesian earths cover an immense portion of the higher ridges. Travels and Adventures of Monsieur Violet It was evident that the vein of galena was somewhere up-stream, though we ourselves were unable to judge from the amount of the deposit whether it was likely to be big or little. The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado “No,” said the doctor quickly, “it is not tin, Duncan, but very fine galena—” “Galena?” said my father; and I stared at the glittering blackish ore like metallic coal. Devon Boys A Tale of the North Shore Argentiferous galena is plentiful, and silver is freely found in conjunction with copper ores. Mexico Its Ancient and Modern Civilisation, History, Political Conditions, Topography, Natural Resources, Industries and General Development We are, however, uncertain whether this "easily melting" material is galena or some other lead ore. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Practically all the lead of commerce is made from galena, two general methods of metallurgy being in use. An Elementary Study of Chemistry Yetmore believed we had a three-foot vein of galena, and it is perfectly evident that he meant to get my share out of me at a trifling price before I was aware of its value. The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado "It is this bluish-gray sample of galena, which, as you see, looks like lead itself, and is often mistaken for it; but it is far from being lead of the kind we can work." The Wonder Island Boys: The Mysteries of the Caverns Calamine is found in beds and veins in limestone rocks, and is often associated with galena and blende. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" 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 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. Its discovery, however, proved the existence of veins of galena—the ore from which lead chiefly comes—in one part of the district, and the prospectors became more active than ever; though without result. The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado The Indians of the far west use not only coal for fire, but raw galena to make bullets for their guns. Pathfinders of the West Being the Thrilling Story of the Adventures of the Men Who Discovered the Great Northwest: Radisson, La Vérendrye, Lewis and Clark At Mound City, near Chillicothe, has been found galena, none of which can be found in Ohio. Mound-Builders The metal which flows liquid at the first melting is called stannum, the second melting is silver; that which remains in the furnace is galena, which is added to a third part of the ore. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z In the case of galena the best method of getting the lead into solution is to treat with hydrochloric acid and zinc. A Text-book of Assaying: For the Use of Those Connected with Mines. As a matter of fact, there was no vein at all—just one single chunk of galena, not worth the trouble of getting it out. The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado Then, Coristine remembered how the dissipated farmer had coupled Rawdon's geology with trap rock, as well as with galena, quartz and beryl. Two Knapsacks A Novel of Canadian Summer Life If you are handy with tools, however, you can buy the galena and make your own detector. The Radio Boys on the Mexican Border If there be much galena, whether it contain a large or a small amount of silver, it is smelted separately from the others; which process I will explain a little further on. De Re Metallica, Translated from the First Latin Edition of 1556 2011-11-16T03:00:21.977Z Thirty grams of galena gave on dry assay 21 grams of lead; and this, on cupellation, gave 15 milligrams of silver. A Text-book of Assaying: For the Use of Those Connected with Mines. “And do you expect to go prospecting for this vein of galena in the spring?” he inquired, when I had concluded. The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado What do hayseeds know about galena, quartz and beryl? Two Knapsacks A Novel of Canadian Summer Life For the detector, it is better to purchase a good make of galena detector at any radio supply store. The Radio Boys on the Mexican Border 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 The determination of metallic antimony in an ore is made either by fusion with potassium cyanide or by fusion with iron, as in the galena assay. A Text-book of Assaying: For the Use of Those Connected with Mines. But there is a vein of galena, size and value unknown, somewhere up on Lincoln Mountain. The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado To attain this Mussulmans, Jewesses, and Christians, rich and poor, all tint their eyelids with galena. Studies in the Psychology of Sex, Volume 4 Sexual Selection In Man Anglesite is a mineral of secondary origin, having been formed by the oxidation of galena in the upper parts of mineral lodes where these have been affected by weathering processes. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 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 chief ore of lead is galena, a sulphide of lead, common in most mining districts, and frequently associated with blende and copper-pyrites. A Text-book of Assaying: For the Use of Those Connected with Mines. And do you suppose Yetmore recognized the sand as galena ore? The Boys of Crawford's Basin The Story of a Mountain Ranch in the Early Days of Colorado As Flinders Petrie has found, the women of the so-called "New Race," between the sixth and tenth dynasties of ancient Egypt, used galena and malachite for painting their faces. Studies in the Psychology of Sex, Volume 4 Sexual Selection In Man His samples were tested there and in Winnipeg, and yielded in copper from 11 to 32 per cent.; and the galena 60 ozs. of silver to the ton. Through the Mackenzie Basin A Narrative of the Athabasca and Peace River Treaty Expedition of 1899 The deposition of galena, blende, and pyrite in the Galena lead mines still continues. Scientific American Supplement, No. 446, July 19, 1884 Wrought iron crucibles are very useful in the processes required for making galena assays. A Text-book of Assaying: For the Use of Those Connected with Mines. The top strata are thirty-six to forty feet--then the mineral clay and galena occur. Personal Memoirs of a Residence of Thirty Years with the Indian Tribes on the American Frontiers Ellenville Lead and zinc: zinc blende, chalcopyrite, galena, lead, zinc and copper concentrates Empire China Works, Brooklyn Insulators Empire Gas and Fuel Co., New York at the Louisiana Purchase Exposition, St. Louis 1904 Report of the New York State Commission The sulphur of the galena falls to the bottom of the bath, and may be separated from the gangue by solution in carbon disulphide. Scientific American Supplement, No. 433, April 19, 1884 On their return to the Murchison, a vein of galena was discovered, and the river traced upwards and downwards for a considerable distance. The History of Australian Exploration from 1788 to 1888 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. Our engineer declared it to be argentiferous galena, but it proved to be magnetic iron. The Land of Midian — Volume 1 The galena lode was found to be more important than had been at first supposed. The Explorers of Australia and their Life-work One specimen of galena showed traces of copper. Journals of Australian Explorations Galena.—A detector that uses a galena crystal for the rectifying element. The Radio Amateur's Hand Book In the argentiferous galena is a very considerable proportion of silver. Nature and Human Nature When I say mines, I use an expression which was quite inappropriate at the time of my visit, for the galena, or lead-ore, lay on the surface of the soil. Memoirs (Vieux Souvenirs) of the Prince de Joinville We get lead from galena, or lead sulfide. Let's Collect Rocks and Shells Mr. Walcott brought in some specimens of galena, which, on farther observation, proved to be abundant. 17th October. Journals of Australian Explorations To secure the galena crystal in the cup you simply unscrew the knurled cap, place it in the cavity of the post and screw the cap back on again. The Radio Amateur's Hand Book There can be no doubt it was the production of the Mound Builders, as galena has often been found on the altars in the mounds. Atlantis : the antediluvian world The thirteen beds followed each other in corresponding order, consisting of fluor-spar, heavy spar, galena, etc. The Student's Elements of Geology Substances can crystallize in seven different systems, and usually a given substance is found in one of these systems only; e.g. galena is invariably cubical. An Introduction to Chemical Science 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 The free end of the cat-whisker wire is then adjusted so that it will rest lightly on the exposed part of the galena. The Radio Amateur's Hand Book That sold in the bazars is not the real grey ore of antimony but a galena or sulphuret of lead. The Book of the Thousand Nights and a Night — Volume 01 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 Note especially the colors of the oxides, the cubical crystallization and cleavage of galena, the specific gravity of the compounds, the softness of Pb, and the tarnish, Pb2O, which covers it,if long exposed. An Introduction to Chemical Science 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 It has also acquired the titles to a number of other valuable mines of galena ore, and copper containing silver and gold. Memoir of the Proposed Territory of Arizona Silver is separated from galena by melting the two metals. An Introduction to Chemical Science Minerals, of which nearly 1000 varieties are now known, may be simple substances, as graphite and sulphur, or compounds, as galena and gypsum. An Introduction to Chemical Science |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。