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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
kornerupine
Geology; Minerals
Kornerupine is a rare boro-silicate mineral with the formula (Mg,Fe 2+ ) 4 (Al,Fe 3+ ) 6 (SiO 4 ,BO 4 ) 5 (O,OH) 2 . It crystallizes in the orthorhombic - dipyramidal crystal system as brown, green, ...
melanophlogite
Geology; Minerals
Melanophlogite (MEP) is a rare silicate mineral and a polymorph of silica (SiO 2 ). It has a zeolite-like porous structure which results in relatively low and not well-defined values of its density ...
iron(II) sulfate
Geology; Minerals
Iron(II) sulfate (Br.E. iron(II) sulphate) or ferrous sulfate is the chemical compound with the formula FeSO 4 . It is used medically to treat iron deficiency, and also for industrial applications. ...
playfairite
Geology; Minerals
Playfairite is a very rare sulfosalt mineral with chemical formula Pb 16 Sb 18 S 43 in the monoclinic crystal system, named after the Scottish scientist and mathematician John Playfair. It was ...
