Tenacity
-
-
Solubility
insoluble
-
Durability
-
-
Specific Gravity
-99993.85-3.94
1
7.18
👆🏻
Fracture
-
Conchoidal, Uneven
Cleavage
{???} Imperfect, {???} Imperfect
{010} Good, {100} Distinct
Mohs Hardness
-99995-5.5
2
10
👆🏻
Chemical Composition
S8
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)