Geology and Mining Glossary. Me qued en Pg. 175 el 29/MAR/2016 revisar columna en espaol round min Country rock, country-rock, wall rocks 1 A general term for any type of rock penetrated by an igneous intrusion or invaded by a mineral vein; 2 The rocks of no commercial value surrounding the host rocks and/or the ore core 1 the innermost layer of the Earth, consisting primarily of pure
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a. razonable, very good, ordinary and middling ore for amalgamation. respectively ; mineral or metal de a., ore capable of being amalgamated ; azogues, Pachuca, Hid. Mex. second-class ore separated in the mine, see calichal ; Sinaloa, Mex. silver ores chiefly composed of sulphide of. silver and plata verde, which, accompanied by sili e of