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Ludlamite
Ludlamite

Austinite
Austinite



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Ludlamite
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Austinite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Pearly
-
0.02
-
1.653-1.693
-
monoclinic
0.038-0.044
TransparentUlrich Henn and Claudio C. Milisenda
 
Subadamantine, Silky
-
0.03
-
1.759
-
Orthorhombic
0.024
-