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Natrolite
Natrolite
☒

Anhydrite
Anhydrite
☒



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Natrolite
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Anhydrite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Silky, Pearly
-
0.02
Transparent, Translucent
1.478-1.493
-
Orthorhombic
0.012-0.013
Transparent
 
Pearly, Greasy
For violet varieties
0.01
Transparent
1.570-1.614
-
Orthorhombic
0.042-0.044
Transparent