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Dominant species
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Ferrosilite
Chemical
Formula
MgSiO3
Species
Silicates
Crystal
System
Orthorhombic
Mohs
Scale
5-6
Specific
Gravity
3.2-3.3
Color
White, grey, green, yellow or brown - colorless in thin section.
Streak
White
Luster
Vitreous, Sub-Vitreous, Greasy
Refractive
Index
n = 1.710 - 1.767 n = 1.723 - 1.770 n = 1.726 - 1.788
Diaphaneity
Transparent, Translucent
Cleavage
Very Good
Fracture
Irregular/Uneven, Splintery
Crystal Habit:Prismatic crystals, commonly lamellar, fibrous, or massive
Ferrosilite1982
Ferrosilite1982
Ferrosilite1980
Ferrosilite1980
Ferrosilite1978
Ferrosilite1978
Ferrosilite1977
Ferrosilite1977
Ferrosilite1975
Ferrosilite1975