Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.71-2.723.85-3.94
1
7.18
👆🏻
Fracture
Fibrous
Conchoidal, Uneven
Cleavage
{???} Good
{010} Good, {100} Distinct
Mohs Hardness
6-6.55-5.5
2
10
👆🏻
Chemical Composition
Ca 6Si 6O 17(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)