6 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
fluor-liddicoatite
Geology; Minerals
Fluor-liddicoatite is a rare member of the tourmaline group of minerals, elbaite subgroup, and the theoretical calcium endmember of the elbaite-fluor-liddicoatite series; the pure end-member has not ...
stellerite
Geology; Minerals
Stellerite has a general formula of Ca(Al 2 Si 7 O 18 )·7H 2 O. It is named after Georg Wilhelm Steller (1709-1746) who was a German explorer and zoologist that discovered it. Like most rare ...
tennantite
Geology; Minerals
Tennantite is a copper arsenic sulfosalt mineral. Its chemical formula is Cu 12 As 4 S 13 . It is grey-black, steel-gray, iron-gray or black in color. A closely related mineral, tetrahedrite (Cu 12 ...
chondrodite
Geology; Minerals
Chondrodite is a nesosilicate mineral with formula (Mg,Fe) 5 (SiO 4 ) 2 (F,OH,O) 2 . Although it is a fairly rare mineral, it is the most frequently encountered member of the humite group of ...
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