Muscovite | |
Chemical Formula |
KAl2(AlSi3O10)(F,OH)2 |
Species |
Silicates |
Crystal System |
Monoclinic |
Mohs Scale |
2 |
Specific Gravity |
2.76-3 |
Color |
White, grey, silvery |
Streak |
White |
Luster |
Vitreous, Silky, Pearly |
Refractive Index |
n = 1.552 - 1.576 n = 1.582 - 1.615 n = 1.587 - 1.618 |
Diaphaneity |
Transparent, Translucent |
Cleavage |
PerfectPerfect on . |
Fracture |
Micaceous |
Crystal Habit:massive to platy | |
Geological Setting:Muscovite is common in many different rock types as a primary mineral. |