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Dominant species
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Jadeite
Chemical
Formula
NaAlSi2O6 or Na(Al,Fe3+)Si2O6
Species
Silicates
Crystal
System
Monoclinic
Mohs
Scale
6
Specific
Gravity
3.24-3.43
Color
Apple-green, emerald-green, bluish green, leek-green,greenish white, white, may show green spots, rarely blue or Purple; colorless in thin section
Streak
White
Luster
Subvitreous, pearly on cleavages
Refractive
Index
n = 1.654 - 1.673 n = 1.659 - 1.679 n = 1.667 - 1.693
Diaphaneity
Translucent
Cleavage
Distinct/Good
Fracture
Splintery
Crystal Habit:Commonly massive, or fibrous, granular— prismatic crystals rare
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