CaSiO3Triclinic
Wollastonite
CaSiO3
SilicatesChemical FormulaCaSiO3
Crystal SystemTriclinic
Mohs Hardness5
Specific Gravity2.9
ColorWhite, gray, pale green
LusterVitreous to pearly
StreakWhite
CleavageTwo directions
FractureSplintery
Occurrence
Found in metamorphic limestones. Used in ceramics and as asbestos substitute.