Geology

Geology

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

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Geology > Minerals

kröhnkite

Geology; Minerals

Kröhnkite ( Na 2 Cu(SO 4 ) 2 •2H 2 O ) is a rare copper sulfate mineral named after B. Kröhnke who first researched it. Kröhnkite has monoclinic symmetry (2/m). Monoclinic ...

paulscherrerite

Geology; Minerals

Paulscherrerite, UO 2 (OH) 2 , is a newly named mineral of the schoepite subgroup of hexavalent uranium hydrate/hydroxides. It is monoclinic, but no space group has been ...

frankdicksonite

Geology; Minerals

Frankdicksonite is a halide mineral with the chemical formula BaF 2 which corresponds to the chemical compound barium fluoride. It occurs in the Carlin gold deposit of Eureka ...

cryolite

Geology; Minerals

Cryolite (Na 3 AlF 6 , sodium hexafluoroaluminate) is an uncommon mineral identified with the once large deposit at Ivigtût on the west coast of Greenland, depleted by 1987. It ...

campigliaite

Geology; Minerals

Campigliaite is a copper and manganese sulfate mineral with a chemical formula of Cu 4 Mn(SO 4 ) 2 (OH) 6 ·4H 2 O. It has a chemical formula and also a crystal structure similar ...

anhydrite

Geology; Minerals

Anhydrite is a mineral—anhydrous calcium sulfate, CaSO 4 . It is in the orthorhombic crystal system, with three directions of perfect cleavage parallel to the three planes of ...

daubréelite

Geology; Minerals

Daubréelite is a rare sulfide mineral. It crystallizes with cubic symmetry and has chemical composition of Fe 2+ Cr 3+ 2 S 4 . It usually occurs as black platy aggregates. ...