Geology

Geology

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

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Geology > Minerals

neptunite

Geology; Minerals

Neptunite is a silicate mineral with the formula KNa 2 Li(Fe 2+ , Mn 2+ ) 2 Ti 2 Si 8 O 24 . With increasing manganese it forms a series with mangan-neptunite. Watatsumiite is the ...

poudretteite

Geology; Minerals

Poudretteite is an extremely rare mineral and gemstone that was first discovered as minute crystals in Mont St. Hilaire, Quebec, Canada, during the 1960s. The mineral was named ...

benitoite

Geology; Minerals

Benitoite is a rare blue barium titanium silicate mineral, found in hydrothermally altered serpentinite. Benitoite fluoresces under short wave ultraviolet light, appearing bright ...

auricupride

Geology; Minerals

Auricupride is a natural alloy that combines copper and gold. Its chemical formula is Cu 3 Au. The alloy crystallizes in the Cubic crystal system and occurs as malleable grains or ...

braggite

Geology; Minerals

Braggite is a sulfide mineral of platinum, palladium and nickel with chemical formula: (Pt, Pd, Ni)S. It is a dense (specific gravity of 10), steel grey, opaque mineral which ...

hellyerite

Geology; Minerals

Hellyerite, NiCO 3 ·6(H 2 O), is an hydrated nickel carbonate mineral. It is light blue to bright green in colour, has a hardness of 2.5, a vitreous luster, a white streak and ...

hisingerite

Geology; Minerals

Hisingerite is an iron(III) phyllosilicate mineral with formula Fe 3+ 2 Si 2 O 5 (OH) 4 ·2H 2 O. A black or dark brown, lustrous secondary mineral, it is formed by the weathering ...