Excerpt from Mineral Deposits It is hardly necessary to call attention to the differences in prices of metals which cause wide disparity in the amounts of different metals necessary to constitute ores. An iron ore must ordinarily contain at least 30 per cent. Of iron - usually much more. A volcanic rock containing 15 per cent. Of iron is far from being an iron ore, but quartz containing per cent. Of gold is a rich gold ore, worth $330 a metric ton; in fact, as' little as per cent. Of gold, equivalent to 1 gram to the ...
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Excerpt from Mineral Deposits It is hardly necessary to call attention to the differences in prices of metals which cause wide disparity in the amounts of different metals necessary to constitute ores. An iron ore must ordinarily contain at least 30 per cent. Of iron - usually much more. A volcanic rock containing 15 per cent. Of iron is far from being an iron ore, but quartz containing per cent. Of gold is a rich gold ore, worth $330 a metric ton; in fact, as' little as per cent. Of gold, equivalent to 1 gram to the metric ton, or a value Of 66 cents a ton, if occurring in an ore with other useful substances, is ordinarily paid for by smelting works. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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.
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Add this copy of Mineral Deposits Classic Reprint to cart. $32.93, new condition, Sold by Books2anywhere rated 5.0 out of 5 stars, ships from Fairford, GLOUCESTERSHIRE, UNITED KINGDOM, published 2018 by Forgotten Books.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Add this copy of Mineral Deposits Classic Reprint to cart. $51.89, new condition, Sold by Paperbackshop rated 4.0 out of 5 stars, ships from Bensenville, IL, UNITED STATES, published 2018 by Forgotten Books.
