Tenacity
BrittleWalter Schumann
-
Solubility
hot salt water
-
Durability
-
-
Specific Gravity
1.98-2.252.55-2.65
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
None
[1010] Poor
Mohs Hardness
5-6.55-6
2
10
👆🏻
Chemical Composition
SiO2 · nH2O
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.