Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.27-2.333.34-3.44
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Perfect
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
5.5-68-8.5
2
10
👆🏻
Chemical Composition
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references