Forsterite
ID: 111
Forsterite
Chemical Formula
Mg2SiO4
Hardness (Mohs)
6.5-7
Crystal System
Orthorhombic
Streak
White
Luster
Vitreous
Diaphaneity
Transparent to translucent
Color
White, grey, light green, yellowish green, brown, black
Crystal Habit / Mode of Occurrence
Prismatic, tabular, or equant crystals; granular, massive
Fun Facts
Forsterite is the magnesium-rich endmember of the olivine solid solution series.