Bustamite | |
Chemical Formula |
CaMn2+Si2O6[1] |
Species |
Silicates |
Crystal System |
Triclinic |
Mohs Scale |
5-6 |
Specific Gravity |
3.32-3.43 |
Color |
Light pink to brownish red Pink color fades on exposure to sunlight |
Streak |
White |
Luster |
Vitreous |
Refractive Index |
n = 1.640 - 1.695 n = 1.651 - 1.708 n = 1.653 - 1.710 |
Diaphaneity |
Transparent, Translucent |
Cleavage |
PerfectOn perfect; on and good; on poor. |
Crystal Habit:Usually tabular or equant to prismatic; commonly massive, often compact and fibrous | |
Geological Setting:In metamorphosed manganese ores, typically skarns |