Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.08-3.122.90-2.98
1
7.18
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Fracture
ConchoidalWalter Schumann
Conchoidal
Cleavage
{010} Perfect
Rare tabular and prismatic crystals. Usually occurs as fibrous, parallel veins that break off into cleavage fragments.
Mohs Hardness
7.53.5
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaSO 4Michael OâDonoghue , Gems, Sixth edition (2006) More from other references