Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.90-2.983.1-3.2
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Vitreous, pearly on cleavage
Mohs Hardness
3.53-4
2
10
👆🏻
Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references