Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.85-3.942.9
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
{010} Good, {100} Distinct
{???} Indistinct
Mohs Hardness
5-5.54.5
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)