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- Chief ore of commercial
aluminum. A mineraloid mixture of hydrous aluminum
oxides.
Source: Leet, L. Don. 1982.
Physical Geology, 6th Edition. Englewood Cliffs, NJ: Prentice-Hall
- An off-white, grayish, brown, yellow, or reddish brown rock composed of
amorphous or microcrystalline aluminum oxides and oxyhydroxides, mainly
gibbsite Al(OH)3 , bayerite Al(OH)3 , boehmite
AlO(OH) , and diaspore AlO(OH) admixed with free silica, silt, iron
hydroxides, and esp. clay minerals; a highly aluminous "laterite." It is
massive, pisolitic, earthy; occurs as weathered surface deposits after
prolonged leaching of silica from aluminous rocks under tropical to
subtropical weathering, also transported deposits. Bauxite is the chief
ore of aluminum.
Source:
Dictionary of Mining, Mineral, and Related Terms
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