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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
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Minerals
poudretteite
Geology; Minerals
Poudretteite is an extremely rare mineral and gemstone that was first discovered as minute crystals in Mont St. Hilaire, Quebec, Canada, during the 1960s. The mineral was named for the Poudrette ...
auricupride
Geology; Minerals
Auricupride is a natural alloy that combines copper and gold. Its chemical formula is Cu 3 Au. The alloy crystallizes in the Cubic crystal system and occurs as malleable grains or platey masses. It ...
hellyerite
Geology; Minerals
Hellyerite, NiCO 3 ·6(H 2 O), is an hydrated nickel carbonate mineral. It is light blue to bright green in colour, has a hardness of 2.5, a vitreous luster, a white streak and crystallises in the ...
hisingerite
Geology; Minerals
Hisingerite is an iron(III) phyllosilicate mineral with formula Fe 3+ 2 Si 2 O 5 (OH) 4 ·2H 2 O. A black or dark brown, lustrous secondary mineral, it is formed by the weathering or hydrothermal ...
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