Geology

Geology

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

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Geology > Minerals

magnesite

Geology; Minerals

Magnesite is a mineral with the chemical formula MgCO 3 (magnesium carbonate). It occupies one end of a solid solution series with siderite (FeCO 3 ), as the iron ion Fe 2+ ...

tungsten

Geology; Minerals

Tungsten, also known as wolfram, is a chemical element with the chemical symbol W and atomic number 74. The word tungsten comes from the Swedish language tung sten directly ...

ulvöspinel

Geology; Minerals

Ulvöspinel or ulvite is an iron titanium oxide mineral with formula: Fe 2 TiO 4 or TiFe 2+ 2 O 4 . It forms brown to black metallic isometric crystals with a Mohs hardness of ...

alamosite

Geology; Minerals

Alamosite (Pb 12 Si 12 O 36 ) is a colorless silicate mineral named after the place where it was discovered, Álamos, Sonora, Mexico. It is a rare secondary mineral occurring in ...

athabascaite

Geology; Minerals

Athabascaite is a member of the copper selenide minerals, and forms with other copper selenides. It was first discovered by S. Kaiman in 1949 while he was researching radioactive ...

haiweeite

Geology; Minerals

Haiweeite is a mineral of uranium and has the chemical formula: Ca((UO 2 ) 2 Si 5 O 12 (OH) 2 )·3(H 2 O). It is a secondary mineral of uranium, a product of oxidation. It has a ...

niedermayrite

Geology; Minerals

Niedermayrite is a rare hydrated copper cadmium sulfate hydroxide mineral with formula: Cu 4 Cd(SO 4 ) 2 (OH) 6 ·4H 2 O. It crystallizes in the monoclinic system and occurs as ...