Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.04-3.263.85-3.94
1
7.18
👆🏻
Fracture
Splintery, Uneven
Conchoidal, Uneven
Cleavage
{110} perfect
{010} Good, {100} Distinct
Mohs Hardness
5-65-5.5
2
10
👆🏻
Chemical Composition
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)