Geology

Geology

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

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Geology > Minerals

thaumasite

Geology; Minerals

Thaumasite is a silicate mineral with chemical formula Ca 3 Si(OH) 6 (CO 3 )(SO 4 )·12H 2 O. It occurs as colorless to white prismatic hexagonal crystals, typically as acicular ...

brucite

Geology; Minerals

Brucite is the mineral form of magnesium hydroxide, with the chemical formula Mg(OH) 2 . It is a common alteration product of periclase in marble; a low-temperature hydrothermal ...

clinohedrite

Geology; Minerals

Clinohedrite is a rare silicate mineral. Its chemical composition is a hydrous calcium-zinc silicate; CaZn(SiO) 4 ·H 2 O. It crystallizes in the monoclinic system and typically ...

montmorillonite

Geology; Minerals

Montmorillonite is a very soft phyllosilicate group of minerals that typically form in microscopic crystals, forming a clay. It is named after Montmorillon in France. ...

struvite

Geology; Minerals

Struvite (magnesium ammonium phosphate) is a phosphate mineral with formula: NH 4 MgPO 4 ·6H 2 O. Struvite crystallizes in the orthorhombic system as white to yellowish or ...

austinite

Geology; Minerals

Austinite is a member of the adelite-descloizite group, adelite subgroup, the Zn end member of the Cu-Zn series with conichalcite. It is the zinc analogue of cobaltaustinite and ...

seamanite

Geology; Minerals

Seamanite, named for discoverer Arthur E. Seaman, is a rare manganese boron phosphate mineral with formula Mn 3 (B(OH) 4 )(PO 4 )(OH) 2 . The yellow to pink mineral occurs as ...