Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.53.04-3.17
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
{001} Indistinct, {???} Indistinct
Mohs Hardness
5-5.55.5
2
10
👆🏻
Chemical Composition
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references