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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
carlosruizite
Geology; Minerals
Carlosruizite is a sulfate or selenate - iodate mineral with chemical formula: K 6 (Na,K) 4 Na 6 Mg 10 (SeO 4 ) 12 (IO 3 ) 12 ·12H 2 O. It has a low density (specific gravity of 3.36), colorless to ...
heazlewoodite
Geology; Minerals
Heazlewoodite, Ni 3 S 2 , is a rare sulfur-poor nickel sulfide mineral found in serpentinitized dunite. It occurs as disseminations and masses of opaque, metallic light bronze to brassy yellow grains ...
hodgkinsonite
Geology; Minerals
Hodgkinsonite is a rare zinc manganese silicate mineral Zn 2 MnSiO 4 (OH) 2 . It crystallizes in the monoclinic system and typically forms radiating to acicular prismatic crystals with variable color ...
nichromite
Geology; Minerals
Nichromite (Ni,Co,Fe)(Cr,Fe,Al) 2 O 4 is a black cubic metallic mineral and member of the spinel group. Nichromite was originally reported from the Bon Accord nickel deposit in Barberton District, ...
