Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.52.52-2.60
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
{0001} Imperfect, {1120} Imperfect
Mohs Hardness
5-5.55.5-6
2
10
👆🏻
Chemical Composition
(Ca,Na) 2Ta 2O 6(O,OH,F)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references