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The mass of rock adjacent to, or hosting an orebody

A chemical used to dissolve gold and silver

An ore of copper, CuS

Extracting gold or silver by dissolving it in cyanide solution

A trigonal metallic mineral, Al2O3

The lowest grade of mineralized material deemed economic

Reactions such as oxidation, hydrolysis, hydration, and carbonation

Separating precious metals with a cupel or small clay cup

Cylindrical cross section of rock obtained by drilling

Solidifying magma taking on the crystal structure inherent of its contained minerals