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Polyhalite
Polyhalite
☒

Manganotantalite
Manganotantalite
☒



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Polyhalite
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Manganotantalite
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Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Resinous
-
0.02
-
1.546-1.548
-
Triclinic
0.021
-
 
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Sometimes strongArthur Thomas
-
TransparentWalter Schumann
2.19-2.34
-
-
0.015
TransparentWalter Schumann

Compare Red Gemstones

Red Gemstones

Carnallite
Carnallite
Bornite
Bornite
Bastnasite
Bastnasite
Manganotantalite
Jacinth
Manganotantalite Vs Jacinth
Manganotantalite
Zebra Rock
Manganotantalite Vs Zebra Rock
Manganotantalite
Nickeline
Manganotantalite Vs Nickeline

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