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" In deposits carrying both metals, especially where chlorides form, secondary silver minerals are likely to be precipitated as bonanzas near the surface, while gold may be carried to greater depths. Examples are deposits of Mohave, Cal. (Exposed Treasure... "
The Enrichment of Ore Deposits - Page 355
by William Harvey Emmons - 1917 - 530 pages
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Coastal Glaciers of Prince William Sound and Kenai Peninsula, Alaska

Ulysses Sherman Grant, Daniel F. Higgins - Glaciers - 1913 - 800 pages
...districts of silver-gold deposits in which gold is assumed to have migrated include manganiferous ores. 42. In deposits carrying both metals, especially where...Comstock lode, Nevada, although in the Comstock district silver chloride is not abundant. 43. In manganiferous deposits of gold and silver where chlorides do...
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United States Congressional Serial Set

United States - 1913 - 754 pages
...migrated include manganiferous ores. 42. In deposits carrying both metals, especially where chloridea form, secondary silver minerals are likely to be precipitated...depths. Examples are deposits of Mohave, Cal. (Exposed Tressure mine), Creede, Cob. (Amethyst lode), and probably the Comstock lode, Nevada, although in the...
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Economic Geology

Heinrich Ries - 1916 - 1358 pages
...to WH Ernmons (7), all deposits in which gold appears to have migrated include manganiferous ores. In deposits carrying both metals, especially where...precipitated as bonanzas near the surface, while gold is carried deeper, but if chlorides are not formed in manganiferous deposits, silver may be carried...
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