Chemical Formula

MgSiO3

Hardness (Mohs)

5.5

Crystal System

Orthorhombic

Streak

White

Luster

Vitreous, pearly on cleavage surfaces

Diaphaneity

Translucent to opaque

Color

White, grey, yellowish, brownish-green, green, brown

Crystal Habit / Mode of Occurrence

Prismatic, columnar, fibrous crystals; massive, lamellar