Tenacity
Brittle
Brittle
Solubility
Soluble
Dilute acid
Durability
-
-
Specific Gravity
4.1-4.32.93-2.96
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
Indistinct on {011}
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
3.5-43.5-4
2
10
👆🏻
Chemical Composition
CuFeS 2Anthony et al , Handbook of mineralogy (2001)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references