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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
penroseite
Geology; Minerals
Penroseite is a rare selenide mineral with formula (Ni,Co,Cu)Se 2 . It has a gray-steel color and black streak with a hardness of 3. It is an isometric mineral, 2/m3. Penroseite was first discovered ...
scandium oxide
Geology; Minerals
Scandium(III) oxide, Sc 2 O 3 , or scandia, is a high melting rare earth oxide. It is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to ...
temagamite
Geology; Minerals
Temagamite is a bright white palladium mercury telluride mineral with a hardness of 2½ on the Mohs scale. Its chemical formula is Pd 3 HgTe 3 . It was discovered at the Temagami Mine on Temagami ...
cadmoindite
Geology; Minerals
Cadmoindite (CdIn 2 S 4 ) is a rare cadmium indium sulfide mineral discovered in Siberia around the vent of a high-temperature (450-600 °C) fumarole at the Kudriavy volcano, Iturup Island in the ...
alsakharovite-Zn
Geology; Minerals
Alsakharovite-Zn is an extremely rare alkaline strontium zinc titanium silicate mineral from the cyclosilicates class, with formula written as NaSrKZn(Ti,Nb) 4 (Si 4 O 12 ) 2 (O,OH) 4 ·7H 2 O, from ...
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