Tenacity
-
-
Solubility
-
HCl soluble
Durability
-
-
Specific Gravity
3.85-3.944.27-4.29
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Uneven
Cleavage
{010} Good, {100} Distinct
Perfect {010}
Mohs Hardness
5-5.55-5.5
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
FeO(OH)Arthur Thomas , Gemstones (2009)