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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
pyrolusite
Geology; Minerals
Pyrolusite is a mineral consisting essentially of manganese dioxide (MnO 2 ) and is important as an ore of manganese. It is a black, amorphous appearing mineral, often with a granular, fibrous or ...
sklodowskite
Geology; Minerals
Sklodowskite is a uranium mineral with the chemical formula: Mg(UO 2 ) 2 (HSiO 4 ) 2 ·5H 2 O. It is a secondary mineral which contains magnesium and is a bright yellow colour, its crystal habit is ...
iron(III) chloride
Geology; Minerals
Iron(III) chloride, also called ferric chloride, is an industrial scale commodity chemical compound, with the formula FeCl 3 . The colour of iron(III) chloride crystals depends on the viewing angle: ...
