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Dominant species
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Epidote
Chemical
Formula
Ca2(Al, Fe)3(SiO_4)3(OH)
Species
Silicates
Crystal
System
Monoclinic
Mohs
Scale
6
Specific
Gravity
3.4
Color
Yellowish-green, green, brownish-green, black
Streak
Colorless
Luster
Vitreous, Pearly
Refractive
Index
n = 1.715 - 1.751 n = 1.725 - 1.784 n = 1.734 - 1.797
Diaphaneity
Transparent, Opaque
Cleavage
PerfectPerfect on , imperfect on
Fracture
Irregular/Uneven
Crystal Habit:Crystals prismatic to 35 cm. Fibrous, coarse to fine granular, massive.
Geological Setting:Regional and contact metamorphic rocks. Saussuritization (alteration of plagioclase)
Epidote5724
Epidote5724
Epidote5723
Epidote5723
Epidote5718
Epidote5718
Epidote5716
Epidote5716
Epidote5715
Epidote5715
Epidote5713
Epidote5713
Epidote5712
Epidote5712
Epidote5708
Epidote5708
Epidote5705
Epidote5705
Epidote5701
Epidote5701
Epidote5695
Epidote5695
Epidote5692
Epidote5692
Epidote5688
Epidote5688

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