Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.22-3.403.7-3.8
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
Perfect
Distinct on {010}
Mohs Hardness
5-67-7.5
2
10
👆🏻
Chemical Composition
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.