Tenacity
Brittle
-
Solubility
Soluble
-
Durability
-
-
Specific Gravity
4.1-4.33.05-3.21
1
7.18
👆🏻
Fracture
Uneven
Uneven, Subconchoidal, Splintery
Cleavage
Indistinct on {011}
Good on {110}, poor on {100}
Mohs Hardness
3.5-47.5
2
10
👆🏻
Chemical Composition
CuFeS 2Anthony et al , Handbook of mineralogy (2001)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references