Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.815.5
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
{001} Perfect
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
4.5-55-5.5
2
10
👆🏻
Chemical Composition
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references