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native metal

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native metal

Any of the metallic elements that occur in nature in the chemically uncombined or elemental form (in addition to any combined form). They include bismuth, cobalt, copper, gold, iridium, iron, lead, mercury, nickel, osmium, palladium, platinum, ruthenium, rhodium, tin, and silver. Some are commonly found in the free state, such as gold; others occur almost exclusively in the combined state, but under unusual conditions do occur as native metals, such as mercury. Examples of native non-metals are carbon and sulphur.



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Before the occupation of Europeans in American colonies, native metal work was very simple and used to consist primary etching and hammering copper items into pendants and earrings and the fashioning of silver and copper into beads.
The presence of native metal melt inclusions does not suggest that all Ag and Bi were deposited from metal-rich melts; however, mobilization of native metals may be responsible for some of the observed textures in the veins and for some remobilization and concentration of Ag and Bi within the five-element (Ni-Co-As-Ag-Bi) veins at Cobalt and similar occurrences worldwide.
Gold and silver mineralization occurs in the hanging and footwall as native metal and associated with disseminations, blebs and fracture fillings of arsenopyrite, pyrite.
 
 
 
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