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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

almarudite

Geology; Minerals

Almarudite is an extremely rare alkaline manganese beryllium silicate mineral of the cyclosilicates (ring silicates) class, with formula written as K((),Na) 2 (Mn 2+ ,Fe 2+ ,Mg) 2 (Be,Al) 3 (Si 12 O ...

hematite

Geology; Minerals

Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe 2 O 3 ), one of several iron oxides. Hematite crystallizes in the rhombohedral system, and it has the same crystal ...

troilite

Geology; Minerals

Troilite is a rare iron sulfide mineral with the simple formula of FeS. It is the iron rich endmember of the pyrrhotite group. Pyrrhotite has the formula Fe (1-x) S (x = 0 to 0.2) which is iron ...

native copper

Geology; Minerals

Native copper is an uncombined form of copper which occurs as a natural mineral. Copper is one of the few metallic elements to occur in native form, although it most commonly occurs in oxidized ...

adelite

Geology; Minerals

The rare mineral adelite, is a calcium, magnesium, arsenate with chemical formula CaMgAsO 4 OH. It forms a solid solution series with the vanadium bearing mineral gottlobite. Various transition ...

aerinite

Geology; Minerals

Aerinite (Ca 4 (Al,Fe,Mg) 10 Si 12 O 35 (OH) 12 CO 3 ·12H 2 O) is a bluish-purple inosilicate mineral. It crystallizes in the monoclinic system and occurs as fibrous masses and coatings. It has a ...

motukoreaite

Geology; Minerals

Motukoreaite is a mineral with formula Na 2 Mg 38 Al 24 (SO 4 ) 8 (CO 3 ) 13 (OH) 108 ·56H 2 O. The mineral is named for Motukorea, the island in New Zealand where it was discovered. Motukoreaite was ...

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