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Tantalite
Tantalite
☒

Kainite
Kainite
☒



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Tantalite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
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
 
Brittle
Soluble
-
2.15
Splintery, Conchoidal
{001}, perfect
2.5-3
KMg(SO4)Cl

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Kainite Vs Radiolarite

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