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Radiolarite
Radiolarite
☒

Tantalite
Tantalite
☒



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Radiolarite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
None
-9999
SiO2
 
-
-
-
5.2
Subconchoidal, Conchoidal
Good in one direction
6-6.5
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references

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Tantalite Vs Pyrrhotite
Tantalite
Vesuvianite
Tantalite Vs Vesuvianite

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