Heavy Mineral Sands Ore Deposits
Heavy mineral sands are a class of ore deposit which is an important source of zirconium, titanium, thorium, tungsten, rare earth elements, the industrial minerals diamond, sapphire, garnet, and occasionally precious metals or gemstones.
Heavy mineral sands are placer deposits formed most usually in beach environments by concentration due to the specific gravity of the mineral grains. It is equally likely that some concentrations of heavy minerals (aside from the usual gold placers) exist within streambeds, but most are of a low grade and are relatively small.
Read more about Heavy Mineral Sands Ore Deposits: Grade and Tonnage Distribution, Source, Transport, Trap, Diamond Sands, Environmental Concerns
Famous quotes containing the words heavy, sands and/or deposits:
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—Administration in the State of Arka, U.S. public relief program (1935-1943)
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—Andrew Jackson (1767–1845)