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Plumbogummite
Plumbogummite

Scheelite
Scheelite



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Plumbogummite
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Scheelite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Resinous
None
0.04
-
1.653-1.688
-
Trigonal
-9999
-
 
Vitreous, Adamantine
Definite dichoric in yellow (yellow to orange-brown)
0.04
Translucent, Transparent
1.918-1.936
-
tetragonal
0.016
Translucent