Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.85-3.943.1-3.2
1
7.18
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Fracture
Conchoidal, Uneven
-
Cleavage
{010} Good, {100} Distinct
Vitreous, pearly on cleavage
Mohs Hardness
5-5.53-4
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references