Tenacity
Brittle
Brittle
Solubility
insoluble in water
-
Durability
-
-
Specific Gravity
5.00-5.205.50-5.90
1
7.18
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Fracture
Uneven, Conchoidal, ConchoidalWalter Schumann
Conchoidal
Cleavage
Indistinct on {001}; partings on {011} and {111}
On {10 1 0}, perfect; parting on {000 1 }
Mohs Hardness
6-6.54
2
10
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Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)