1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
Not Available2.90-2.98
1
7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Not Available
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
1.7 Mohs Hardness
1.8 Chemical Composition
MnTa 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references