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Minerals

Naturally occurring substance that is solid and stable at room temperature, representable by a chemical formula, usually abiogenic, and has an ordered atomic structure. It is different from a rock, which can be an aggregate of minerals or non-minerals, and does not have a specific chemical composition. The general definition of a mineral encompasses the following criteria: 1 - Naturally occurring 2 - Stable at room temperature 3 - Represented by a chemical formula 4 - Usually abiogenic 5 - Ordered atomic arrangement

Contributors in Minerals

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 radiating groups. It ...

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 vein mineral in ...

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 occurs as veinlets and ...

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. Montmorillonite, a member of the ...

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 brownish-white pyramidal ...

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 nickelaustinite. At ...

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 small, needle-shaped ...

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