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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
hausmannite
Geology; Minerals
Hausmannite is a complex oxide of manganese containing both di- and tri-valent manganese. The formula can be represented as Mn 2+ Mn 3+ 2 O 4 . It belongs to the spinel group and forms tetragonal ...
khatyrkite
Geology; Minerals
Khatyrkite is a rare mineral which is mostly composed of copper and aluminium, but might contain up to about 15% of zinc or iron; its chemical structure is described by an approximate formula ...
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