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Vivianite
Vivianite

Serpentine
Serpentine



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Vivianite
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Serpentine
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael O’Donoghue
0.03
Transparent
1.560-1.640
-
-
0.054-0.075
Transparent
 
Vitreous, Greasy, Silky
-
0.01
Translucent
1.560-1.571
-
monoclinic
0.008-0.014
Translucent