Tenacity
Brittle
Brittle
Solubility
Soluble
insoluble
Durability
-
-
Specific Gravity
4.1-4.36.86-7.03
1
7.18
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Fracture
Uneven
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
Indistinct on {011}
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
3.5-46-7
2
10
👆🏻
Chemical Composition
CuFeS 2Anthony et al , Handbook of mineralogy (2001)
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references