Tenacity
Flexible
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
2.20-2.402.9-3.5
1
7.18
👆🏻
Fracture
Conchoidal, Splintery, Fibrous
Conchoidal
Cleavage
Perfect on {010}, distinct on {100}
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
25.5-6
2
10
👆🏻
Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)