Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.293.87-4.14
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Subconchoidal, Conchoidal
Cleavage
Very poor [100]
Poor on {120}, in traces on {001}
Mohs Hardness
5-5.55.5-6
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references