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Pollucite
Pollucite

Natrolite
Natrolite



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Pollucite
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Natrolite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Greasy
-
0.01
Transparent, Translucent
1.517-1.525
-
Isometric
-9999
Transparent
 
Vitreous, Silky, Pearly
-
0.02
Transparent, Translucent
1.478-1.493
-
Orthorhombic
0.012-0.013
Transparent