Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.00-4.623.85-3.94
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal, Uneven
Cleavage
Indistinct parting on [111]
{010} Good, {100} Distinct
Mohs Hardness
7.5-85-5.5
2
10
👆🏻
Chemical Composition
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)