24 Terms
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General mining
General mining related terms and definitions in minerals and related activities.
Industry: Mining
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General mining
heap leaching
Mining; General mining
The process of stacking ore in a heap on an impermeable pad and percolating through the ore a solution containing a leaching agent such as cyanide. The gold which leaches from the ore into the ...
long hole open stope
Mining; General mining
A method of mining involving the drilling of holes typically up to 30 meters long into an ore body and then blasting a slice of rock which falls into an open space. The broken ore is extracted and ...
rare earth
Mining; General mining
A group of 17 mineral elements found in the earth's crust. Rare earths have broad commercial and military applications, and are vital to the manufacture of products as diverse as iPods, cellphones, ...
phyllite
Mining; General mining
A type of foliated metamorphic rock primarily composed of quatz, seiricte mica and chlorite.
adit
Mining; General mining
A nearly horizontal passage from the surface by which a mine is entered and dewatered. A blind horizontal opening into a mountain, with only one entrance.
arrastra
Mining; General mining
A mill, consisting of one or more large stones dragged around on a circular bed, used to grind ore.
Chilean mill
Mining; General mining
A machine, somewhat like the arrastra, in which heavy stone wheels turn about a central shaft and crush ore.
