Tenacity
Elastic
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.9-3.11.98-2.25
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
Perfect basal {001}
None
Mohs Hardness
3.5-4.05-6.5
2
10
👆🏻
Chemical Composition
-
SiO 2 + H 2OUlrich Henn and Claudio C.