Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.95-3.072.90-2.98
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
Perfect on {110} at 56° and 124°; partings on {010} and {100}
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Mohs Hardness
5-63.5
2
10
👆🏻
Chemical Composition
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references