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Hurlbutite
Hurlbutite
☒

Sard
Sard
☒



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Hurlbutite
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Sard
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
-
0.02
Transparent
1.595-1.604
-
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
0.009
Transparent
 
Waxy
-
0.01
Translucent
1.535-1.539
-
-
0.008-0.010
Translucent

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Sard Vs Lizardite

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