Mineral Physical Properties Chart
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چکیده
Minerals are defined as naturally occurring, inorganic, solids with a definite chemical composition and a regular, internal crystalline structure. The keys to this definition are the chemical composition and the crystalline structure. Different chemical compositions result in different minerals. A good example is the mineral plagioclase. Plagioclase is a member of the feldspar group, but there is more than one type of plagioclase. Albite and anorthite are two examples. Albite has a chemical composition of NaAlSi3O8, while anorthite's chemical compositon is CaAl2Si2O8. Very similar, but still different, therefore two different minerals.
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