Sapphirine
From Geology Wiki
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| Pronunciation | |
|---|---|
| Rock/Mineral | Mineral |
| Type | Mineral |
| Cleavage | |
| Hardness | 7.5 |
| Streak | White |
| Lustre | |
| Specific Gravity | |
| Chemical Compound | (Mg,Al)8(Al,Si)6O20 |
Sapphirine is a rare mineral. These minerals are generally found in environments poor in silica and fluent with magnesium and aluminum.
