Wollastonite | |
Chemical Formula |
Calcium silicate, CaSiO3 |
Species |
Silicates |
Crystal System |
Triclinic |
Mohs Scale |
4-5 |
Specific Gravity |
2.9 |
Color |
White, colorless or gray |
Streak |
White |
Luster |
Vitreous, Pearly |
Refractive Index |
n = 1.616 - 1.640 n = 1.628 - 1.650 n = 1.631 - 1.653 |
Diaphaneity |
Transparent, Translucent |
Cleavage |
PerfectPerfect on Good on and |
Fracture |
Irregular/Uneven |
Crystal Habit:Rare as tabular crystals – commonly massive in lamellar, radiating, compact and fibrous aggregates. | |
Geological Setting:In thermally metamorphosed siliceous carbonates, in the igneous rocks and as a skarn deposit. |