Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.22-3.402.65
1
7.18
👆🏻
Fracture
Conchoidal
ConchoidalWalter Schumann
Cleavage
Perfect
Indiscernible
Mohs Hardness
5-67
2
10
👆🏻
Chemical Composition
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
SiO2