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Plagioclase
| Chemical Formula | NaAlSi3O8-CaAl2Si2O8 |
| Mohs Hardness | 6-6.5 |
| Specific gravity | 2.62～2.72 |
| Description |
Plagioclase is a series of tectosilicate minerals within the feldspar family. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a solid solution series, more properly known as the plagioclase feldspar series. The composition of a plagioclase feldspar is typically denoted by its overall fraction of anorthite or albite. Plagioclase is also known to be the mineral that makes up the moon. |
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