Geology

Geology

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

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Geology > Minerals

steacyite

Geology; Minerals

Steacyite is a complex silicate mineral containing thorium and uranium; formula K variable (Ca,Na) 2 (Th,U)Si 8 O 20 . It forms small brown or yellow green crystals, often ...

acanthite

Geology; Minerals

Acanthite, Ag 2 S, crystallizes in the monoclinic system and is the stable form of silver sulfide below 173 °C. Argentite is the stable form above that temperature. As argentite ...

aheylite

Geology; Minerals

Aheylite is a rare phosphate mineral with formula (Fe 2+ Zn)Al 6 ((OH) 4

balangeroite

Geology; Minerals

Balangeroite is found in one of the most important chrysotile mines in Europe, the Balangero Serpentinite. It is considered an asbestiform in an assemblage of other mineral phases ...

bayleyite

Geology; Minerals

Bayleyite is an uranium carbonate mineral with the chemical formula: Mg 2 (UO 2 )(CO 3 ) 3 ·18(H 2 O). It is a secondary mineral which contains magnesium, uranium and carbon. It ...

fornacite

Geology; Minerals

Fornacite is a rare lead, copper chromate arsenate hydroxide mineral with the formula: Pb 2 Cu(CrO 4 )(AsO 4 )(OH). It forms a series with the phosphate mineral vauquelinite. It ...

meyerhofferite

Geology; Minerals

Meyerhofferite is a hydrated borate mineral, with the chemical formula Ca 2 B 6 O 6 (OH) 10 ·2(H 2 O), CaB 3 O 3 (OH) 5 ·H 2 O or Ca 2 (H 3 B 3 O 7 ) 2 ·4(H 2 O). It occurs ...