A metal refinery utilizing heated crucibles as a primary means of refinement
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Category: <span>S</span>
A long rectangular box having raised walls along its length, and a series of raised or recessed riffles between its walls, used for the recovery of gold and heavy placer minerals
The eroded surface at the edge of a fault caused by friction
A usually grayish, fine grained mineral substance composed of the metamorphosised compaction of any of clay, volcanic ash, and shale sediments
The enlargement of an adit, mine opening or trench by excavating layers of side from its sidewalls
The fused or partially fused concentrate of byproducts leftover from the smelting of metal
A metamorphic rock mass formed at the intersection of two large igneous masses
A white precious metal Symbol, Ag.
A period within the Paleozoic era, 440 to 400 million years ago
Bedded rock layering specific to an area