1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.90-2.983.45-3.55
1
7.18
1.5 Fracture
Conchoidal, Brittle, Conchoidal, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven
1.6 Cleavage
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
{100} Perfect, {010} Perfect
1.7 Mohs Hardness
1.8 Chemical Composition
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Fe,Mg) 2Si 2O 6Ulrich Henn and Claudio C.