Geology

Geology

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

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Geology > Minerals

fabianite

Geology; Minerals

Fabianite is a borate mineral with the chemical formula CaB 3 O 5 (OH). It is colorless and leaves a white streak. Its crystals are monoclinic prismatic. It is transparent and ...

hyalophane

Geology; Minerals

Hyalophane or jaloallofane is a crystalline mineral, part of the feldspar group of tectosilicates. It is considered a barium-rich potassium feldspar. Its chemical formula is ...

spertiniite

Geology; Minerals

Spertiniite is a rare copper hydroxide mineral. Chemically it is copper(II) hydroxide with formula Cu(OH) 2 . It occurs as blue to blue green tabular orthorhombic crystal ...

anorthoclase

Geology; Minerals

The mineral anorthoclase ((Na,K)AlSi 3 O 8 ) is a crystalline solid solution in the alkali feldspar series, in which the sodium-aluminium silicate member exists in larger ...

alluaudite

Geology; Minerals

Alluaudite is a relatively common alkaline manganese iron phosphate mineral with formula (Na,Ca)Mn 2+ (Fe 3+ ,Mn 2+ ,Fe 2+ ,Mg) 2 (PO 4 ) 3 , of secondary (metasomatic) origin, ...

schäferite

Geology; Minerals

Schäferite is a rare vanadate mineral with chemical formula Ca 2 NaMg 2 (VO 4 ) 3 . Schäferite is isometric, which means that it has three axes of equal length and 90° angles ...

arsenoclasite

Geology; Minerals

Arsenoclasite (originally arsenoklasite) is a red or dark orange brown mineral with formula Mn 5 (AsO 4 ) 2 (OH) 4 . The name comes from the Greek words αρσενικόν (for arsenic) ...