Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.71-2.723.82-3.97
1
7.18
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Fracture
Fibrous
Subconchoidal, Conchoidal
Cleavage
{???} Good
Perfect on [001] and [011]
Mohs Hardness
6-6.55.5-6
2
10
👆🏻
Chemical Composition
Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references