Tenacity
Sectile
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.073.85-3.94
1
7.18
👆🏻
Fracture
-
Conchoidal, Uneven
Cleavage
Perfect on {010}, indistinct on {100} and {102}
{010} Good, {100} Distinct
Mohs Hardness
25-5.5
2
10
👆🏻
Chemical Composition
Ni3(AsO4)2•8(H2O)
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)