Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.22-3.402.24-2.29
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Subconchoidal, Conchoidal
Cleavage
Perfect
Very poor [100]
Mohs Hardness
5-65-5.5
2
10
👆🏻
Chemical Composition
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references