Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.85-3.942.79-2.87
1
7.18
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Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
{010} Good, {100} Distinct
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Mohs Hardness
5-5.55.5-6
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references