Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.293.22-3.40
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal
Cleavage
Very poor [100]
Perfect
Mohs Hardness
5-5.55-6
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)