Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.303.19-3.56
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
None
{110} Perfect, {010} Indistinct
Mohs Hardness
25.5-6
2
10
👆🏻
Chemical Composition
CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)