Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.19-3.562.30
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
-
Cleavage
{110} Perfect, {010} Indistinct
None
Mohs Hardness
5.5-62
2
10
👆🏻
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)