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Rhyolite
Rhyolite

Nephrite
Nephrite



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Rhyolite
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Nephrite
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Optical Properties

Luster

-
Vitreous, Greasy

Pleochroism

-
None

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

-99991.600-1.627
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
monoclinic

Birefringence

-99990.027
0 0.296
👆🏻

Clarity

-
Translucent