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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
manganvesuvianite
Geology; Minerals
Manganvesuvianite is a rare mineral with formula Ca 19 Mn 3+ (Al,Mn 3+ ,Fe 3+ ) 10 (Mg,Mn 2+ ) 2 (Si 2 O 7 ) 4 (SiO 4 ) 10 O(OH) 9 . The mineral is red to nearly black in color. Discovered in South ...
monohydrocalcite
Geology; Minerals
Monohydrocalcite is a mineral that is a hydrous form of calcium carbonate, CaCO 3 ·H 2 O. It was formerly also known by the name hydrocalcite, which is now discredited by the IMA. It is a trigonal ...
sphalerite
Geology; Minerals
Sphalerite ((Zn,Fe)S) is a mineral that is the chief ore of zinc. It consists largely of zinc sulfide in crystalline form but almost always contains variable iron. When iron content is high it is an ...
sapphirine
Geology; Minerals
Sapphirine is a rare mineral, a silicate of magnesium and aluminium with the chemical formula (Mg,Al) 8 (Al,Si) 6 O 20 (with iron as a major impurity). Named for its sapphire-like colour, sapphirine ...