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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
ferrimolybdite
Geology; Minerals
Ferrimolybdite is a hydrous iron molybdate mineral with formula: Fe 3+ 2 (MoO 4 ) 3 ·8(H 2 O) or Fe 3+ 2 (MoO 4 ) 3 ·n(H 2 O). It forms coatings and radial aggregates of soft yellow needles which ...
kogarkoite
Geology; Minerals
Kogarkoite is a sodium sulfate fluoride mineral with formula Na 3 (SO 4 )F. It has a pale blue color. The specific gravity is about 2.67 and the hardness is 3.5. The crystall system is monoclinic. ...
arfvedsonite
Geology; Minerals
Arfvedsonite is a sodium amphibole mineral with composition: (Na)(Na 2 )((Fe 2+ ) 4 Fe 3+ )((OH) 2
barytocalcite
Geology; Minerals
Barytocalcite is an anhydrous barium calcium carbonate mineral with the chemical formula Ba Ca(C O 3 ) 2 . It is trimorphous with alstonite and paralstonite, that is to say the three minerals have ...
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