Tenacity
-
Slightly sectile
Solubility
-
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
-
-
Specific Gravity
2.24-2.292
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Uneven
Cleavage
Very poor [100]
Prismatic {10 1 0}, perfect
Mohs Hardness
5-5.52-2.5
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references