Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.85-3.943.02
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven, Conchoidal
Cleavage
{010} Good, {100} Distinct
{0001} Poor
Mohs Hardness
5-5.5-9999
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca(Li 2Al)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)