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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
tellurobismuthite
Geology; Minerals
Tellurobismuthite is a telluride mineral: bismuth telluride (Bi 2 Te 3 ). It crystallizes in the trigonal system. There are natural cleavage planes in the (0001) direction as the crystal is ...
paralaurionite
Geology; Minerals
Paralaurionite is a colorless mineral consisting of a basic lead chloride PbCl(OH) that is dimorphous with laurionite. It is a member of the matlockite group. The name is derived from para-, the ...
tyrrellite
Geology; Minerals
Tyrrellite is a selenide mineral that has a formula of Cu(Co,Ni) 2 Se 4 . It has been found in the Goldfields District in northern Saskatchewan, as well as in the Petrovice deposit, Czech Republic. ...
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