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Author: Charles Herman Fulton
Publisher:
ISBN:
Category : Copper ores
Languages : en
Pages : 82
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Book Description
Author: Charles Herman Fulton
Publisher:
ISBN:
Category : Copper ores
Languages : en
Pages : 82
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Book Description
Author: Charles H. Fulton
Publisher: Forgotten Books
ISBN: 9781334491856
Category : Science
Languages : en
Pages : 52
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Book Description
Excerpt from The Ores of Copper, Lead, Gold and Silver Although the gangue is always mineral in character, it may be divided into two classes the minerals that make up the vein filling between two more or less distinct rock walls that inclose the vein or ore body, and (2) the rock mass itself throughout Which the valuable mineral may be disseminated. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Charles H. Fulton
Publisher:
ISBN:
Category :
Languages : en
Pages : 45
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Author: Charles Herman Fulton
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Leonard Strong Austin
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 426
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Author: Charles Herman Fulton
Publisher: Rarebooksclub.com
ISBN: 9781230143026
Category :
Languages : en
Pages : 32
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Book Description
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...CANADA. The Cobalt, Canada, ore bodies are veins in a complex of metamorphic rocks and Huronian conglomerate associated with an eruptive rock (diabase). The gangue of the ores is largely calcite, with fragments of wall rock and some quartz. The silver occurs chiefly as native silver, frequently in large masses and nuggets, but also in small grains, rather finely disseminated. Silver minerals, as dycrasite (antimonial silver, Ag3Sb), argentite, and pyrargerite, are also found, but are subordinate in importance. Associated with the silver are the minerals smaltite (cobalt-nickel arsenide--CoNiAs., ) and niccolite (nickel arsenide, NiAs) and other cobalt-nickel minerals. The nickel-cobalt content of the ores is not as yet of much commercial importance, but will probably become so. The value of the ores varies much, as they range from high grade to medium grade. Ores containing more than 100 ounces of silver per ton are milled or shipped and smelted, and ores with a lower metal content are first concentrated. Typical shipping ore has the following analyses: Analyses of typical shipping ore from deposits at Cobalt, Canada. The average silver content of concentrating ore in 1910 was about 27 ounces per ton. The concentrate is shipped, and the tailings from concentration at a number of mills are treated by cyanidation for a further recovery of silver. Cobalt is the world's greatest silver district. ORES CONTAINING SILVER CHIEFLY AS ARGENTITE. PACHUCA, MEXICO. The Pachuca, Mexico, ore bodies are veins in eruptive rocks (andesite). The gangue of the ores is essentially quartz, although in some mines of the district rhodonite is an important gangue mineral. Some clay occurs, and in places a little calcite. Practically all ores now mined are...
Author: Walter Lee Brown
Publisher:
ISBN:
Category : Assaying
Languages : en
Pages : 510
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Author: Walter Lee Brown
Publisher:
ISBN:
Category : Assaying
Languages : en
Pages : 614
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Author: Leonard Strong Austin
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 544
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Author: Walter Lee Brown
Publisher: BoD – Books on Demand
ISBN: 338533487X
Category : Fiction
Languages : en
Pages : 326
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Book Description
Reprint of the original, first published in 1883.
