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Goethite
Goethite
☒

Cavansite
Cavansite
☒



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Goethite
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Cavansite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Adamantine
VisibleArthur Thomas
0.05
-
2.26-2.398
-
Orthorhombic
0.138
-
 
Vitreous, Pearly
Visible: X=Z= colorless Y= blue
0.04
-
1.542
-
Orthorhombic
0.009
-

Compare Brown Gemstones

Brown Gemstones

Povondraite
Povondraite
Sonolite
Sonolite
Staurolite
Staurolite
Cavansite
Jacobsite
Cavansite Vs Jacobsite
Cavansite
Larvikite
Cavansite Vs Larvikite
Cavansite
Magnetite
Cavansite Vs Magnetite

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