Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
3.85-3.942.67-2.73
1
7.18
👆🏻
Fracture
Conchoidal, Uneven
Conchoidal
Cleavage
{010} Good, {100} Distinct
Perfect on [10 1 1] three directions with angle of 74° 55
Mohs Hardness
5-5.53
2
10
👆🏻
Chemical Composition
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
CaCO 3Ulrich Henn and Claudio C.