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
caledonite
Geology; Minerals
Caledonite, whose name derives from Caledonia, the historical name of its place of discovery (Scotland), is a richly colored blue-green sulfate-carbonate mineral of lead and copper with an ...
torbernite
Geology; Minerals
Torbernite, whose name derives from the Swedish chemist Torbern Bergman (1735-1784), is a radioactive, hydrated green copper uranyl phosphate mineral, found in granites and other uranium-bearing ...
macdonaldite
Geology; Minerals
Macdonaldite is a rare barium silicate mineral with a chemical formula of BaCa 4 Si 16 O 36 (OH) 2 ·10H 2 O. Macdonaldite was first described in 1965 and named for Gordon Andrew Macdonald (1911-1978) ...
