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Geology

The scientific study of the origin, history, and physical features of the earth.

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Geology > Minerals

claudetite

Geology; Minerals

Claudetite is an arsenic oxide mineral with chemical formula As 2 O 3 . Claudetite is formed as an oxidation product of arsenic sulfides and is colorless or white. It can be ...

holmquistite

Geology; Minerals

Holmquistite is a lithium magnesium aluminium inosilicate mineral with chemical formula: Li 2 (Mg,Fe 2+ ) 3 Al 2 Si 8 O 22 (OH) 2 . It crystallizes in the orthorhombic crystal ...

nabalamprophyllite

Geology; Minerals

Nabalamprophyllite has a general formula of Ba(Na,Ba)(Na 3 Ti(Ti 2 O 2 Si 4 O 14 )(OH,F) 2 ) The name is given for its composition (Naba, meaning sodium, Na and barium, Ba) and ...

hilgardite

Geology; Minerals

Hilgardite is a borate mineral with the chemical formula Ca 2 B 5 O 9 Cl·H 2 O. It is transparent and has vitreous luster. It is colorless to light pink with a white streak. It is ...

kassite

Geology; Minerals

Kassite is a rare mineral with formula CaTi 2 O 4 (OH) 2 . It crystallizes in the orthorhombic crystal system and forms radiating rosettes and pseudo-hexagonal tabular crystals ...

salzburgite

Geology; Minerals

Salzburgite has a general empirical formula of Pb 2 Cu 2 Bi 7 S 12 and an orthorhombic crystal structure. This mineral is very similar to paarite in that they both have nearly ...

aikinite

Geology; Minerals

Aikinite is a sulfide mineral of lead, copper and bismuth with formula PbCuBiS 3 . It forms black to grey or reddish brown acicular orthorhombic crystals with a Mohs hardness of 2 ...

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