Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.85-3.944.1-4.3
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven
Cleavage
{010} Good, {100} Distinct
Indistinct on {011}
Mohs Hardness
5-5.53.5-4
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
CuFeS 2Anthony et al , Handbook of mineralogy (2001)