Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.85-3.943.03-3.18
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Irregular, Conchoidal
Cleavage
{010} Good, {100} Distinct
{???} Indistinct
Mohs Hardness
5-5.57-7.5
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)