10 Terms
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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
chalcanthite
Geology; Minerals
Chalcanthite, whose name derives from the Greek, chalkos and anthos, meaning copper flower, is a richly-colored blue/green water-soluble sulfate mineral CuSO 4 ·5H 2 O. It is commonly found in the ...
boltwoodite
Geology; Minerals
Boltwoodite is a hydrated potassium uranyl silicate mineral with formula HK(UO 2 )(SiO 4 )·1.5(H 2 O). It is formed from the oxidation and alteration of primary uranium ores. It takes the form of a ...
drysdallite
Geology; Minerals
Drysdallite is a rare molybdenum selenium sulfide mineral with formula Mo(Se,S) 2 . It crystallizes in the hexagonal system as small pyramidal crystals or in cleavable masses. It is an opaque ...
northupite
Geology; Minerals
Northupite is an uncommon evaporite mineral, with the chemical formula Na 3 Mg(CO 3 ) 2 Cl. It occurs as colourless to dark grey or brown octahedral crystals and as globular masses. In synthetic ...
