Geology

Geology

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

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Geology > Minerals

madocite

Geology; Minerals

Madocite is a mineral with a general formula of Pb 17 (Sb,As) 16 S 41 . Madocite was named for the locality of discovery, Madoc, Ontario, Canada. It is found in the marbles of the ...

tellurobismuthite

Geology; Minerals

Tellurobismuthite is a telluride mineral: bismuth telluride (Bi 2 Te 3 ). It crystallizes in the trigonal system. There are natural cleavage planes in the (0001) direction as the ...

kainite

Geology; Minerals

Kainite (MgSO 4 ·KCl·3H 2 O) is a mineral salt that consists of potassium chloride and magnesium sulfate and is used as a fertilizer. This mineral is dull and soft, is colored ...

paralaurionite

Geology; Minerals

Paralaurionite is a colorless mineral consisting of a basic lead chloride PbCl(OH) that is dimorphous with laurionite. It is a member of the matlockite group. The name is derived ...

tyrrellite

Geology; Minerals

Tyrrellite is a selenide mineral that has a formula of Cu(Co,Ni) 2 Se 4 . It has been found in the Goldfields District in northern Saskatchewan, as well as in the Petrovice ...

cohenite

Geology; Minerals

Cohenite is a naturally occurring iron carbide mineral with the chemical structure (Fe, Ni, Co) 3 C. This forms a hard, shiny, silver mineral which was named by E. Weinschenk in ...

shandite

Geology; Minerals

Shandite is a sulfide mineral with chemical formula: Ni 3 Pb 2 S 2 . It was discovered in 1950 and named after Scottish petrologist, Samuel James Shand (1882-1957). It is ...