Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.293.20-3.25
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Uneven, Conchoidal
Cleavage
Very poor [100]
Good/distinct on [210]
Mohs Hardness
5-5.55.5
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Mg 2Si 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references