Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.85-3.943.89-4.18
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal, Uneven
Cleavage
{010} Good, {100} Distinct
{0001}, {11 2 0} imperfect
Mohs Hardness
5-5.55.5
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references