Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.85-3.943.1-3.5
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Granular
Cleavage
{010} Good, {100} Distinct
None
Mohs Hardness
5-5.55-6
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)