Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.23-3.265.5
1
7.18
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Fracture
Conchoidal
Conchoidal
Cleavage
Perfect on {010} imperfect on {100}
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
6.5-75-5.5
2
10
👆🏻
Chemical Composition
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references