Tenacity
Brittle
-
Solubility
Effervesces in cold
-
Durability
-
-
Specific Gravity
4-4.23.85-3.94
1
7.18
👆🏻
Fracture
Splintery
Conchoidal, Uneven
Cleavage
Perfect on {100} and {010}
{010} Good, {100} Distinct
Mohs Hardness
45-5.5
2
10
👆🏻
Chemical Composition
CuZn(CO3)(OH)2
(Mn2+ ,Fe2+ ,Mg,Ca) 2(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth Edition (2006)