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Dominant species
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Olivine
Chemical
Formula
(Mg, Fe)2SiO4
Species
Silicates
Crystal
System
Orthorhombic
Mohs
Scale
6-7
Specific
Gravity
3.27-3.37
Color
Yellow to yellow-green
Streak
White
Luster
Vitreous
Refractive
Index
n = 1.630 - 1.650 n = 1.650 - 1.670 n = 1.670 - 1.690
Diaphaneity
Transparent to translucent
Cleavage
Poor
Fracture
Conchoidal – brittle
Crystal Habit:Massive to granular
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