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Beudantite
Beudantite

Tantalite
Tantalite



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Beudantite
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Tantalite
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.48
-
distinct; good on {0001}
3.5-4.5
PbFe+++3(AsO4)(SO4)(OH)6
 
-
-
-
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