Geology

Geology

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

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Geology > Minerals

ferrimolybdite

Geology; Minerals

Ferrimolybdite is a hydrous iron molybdate mineral with formula: Fe 3+ 2 (MoO 4 ) 3 ·8(H 2 O) or Fe 3+ 2 (MoO 4 ) 3 ·n(H 2 O). It forms coatings and radial aggregates of soft ...

kogarkoite

Geology; Minerals

Kogarkoite is a sodium sulfate fluoride mineral with formula Na 3 (SO 4 )F. It has a pale blue color. The specific gravity is about 2.67 and the hardness is 3.5. The crystall ...

domeykite

Geology; Minerals

Domeykite is a copper arsenide mineral, Cu 3 As. It crystallizes in the isometric system, although crystals are very rare. It typically forms as irregular masses or botryoidal ...

marrite

Geology; Minerals

Marrite (mar'-ite) is depicted by the chemical formula PbAgAsS 3 . It is the arsenic equivalent of mineral freieslebenite (PbAgSbS 3 ), but also displays close polyhedral ...

arfvedsonite

Geology; Minerals

Arfvedsonite is a sodium amphibole mineral with composition: (Na)(Na 2 )((Fe 2+ ) 4 Fe 3+ )((OH) 2

barytocalcite

Geology; Minerals

Barytocalcite is an anhydrous barium calcium carbonate mineral with the chemical formula Ba Ca(C O 3 ) 2 . It is trimorphous with alstonite and paralstonite, that is to say the ...

polycrase

Geology; Minerals

Polycrase or polycrase-(Y) is a black or brown metallic complex uranium yttrium oxide mineral with formula: (Y,Ca,Ce,U,Th)(Ti,Nb,Ta) 2 O 6 . It is amorphous. It has a Mohs ...