Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
1.97-2.223.10-3.20
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
None
Poor to good on (001)
Mohs Hardness
6-6.56-6.5
2
10
👆🏻
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
(Mg,Fe) 5(SiO 4) 2(F,OH) 2Ulrich Henn and Claudio C.