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Mottramite
Mottramite
☒

Gahnospinel
Gahnospinel
☒



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Mottramite
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Gahnospinel
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Greasy
Visible X=Y= canary yellow to greenish yellow
0.04
-
2.170
-
Orthorhombic
0.150
-
 
Vitreous
-
0.02
-
1.735-1.790
-
Isometric
-9999
TransparentUlrich Henn and Claudio C. Milisenda

Compare Brown Gemstones

Brown Gemstones

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Radiolarite
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Chromite
Petrified Wood
Petrified Wood
Gahnospinel
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Gahnospinel Vs Vesuvianite
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Vlasovite
Gahnospinel Vs Vlasovite
Gahnospinel
Jet lignite
Gahnospinel Vs Jet lignite

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