Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.07-3.135.06-5.08
1
7.18
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Fracture
Conchoidal, Uneven
Uneven, Subconchoidal, Conchoidal
Cleavage
{100} Perfect, {010} Distinct, {102} Distinct
Poor on [111].
Mohs Hardness
3-3.53-3.25
2
10
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Chemical Composition
Zn 2(Fe2+ ,Mn2+ )(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Cu5FeS4