16 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
pezzottaite
Geology; Minerals
Pezzottaite, marketed under the name raspberyl or raspberry beryl, is a newly identified mineral species, first recognized by the International Mineralogical Association in September 2003. ...
nontronite
Geology; Minerals
Nontronite is the iron(III) rich member of the smectite group of clay minerals. Nontronites typically have a chemical composition consisting of more than ~30% Fe 2 O 3 and less than ~12% Al 2 O 3 ...
manganese(II) chloride
Geology; Minerals
Manganese(II) chloride describes a series of compounds with the formula MnCl 2 (H 2 O) x , where the value of x can be 0, 2, or 4. The tetrahydrate is the most common form of "manganese(II) ...
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