Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.105.06-5.08
1
7.18
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Fracture
Uneven
Uneven, Subconchoidal, Conchoidal
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
Poor on [111].
Mohs Hardness
3.5-43-3.25
2
10
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Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu5FeS4