Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.50-5.905.05-5.22
1
7.18
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Fracture
Conchoidal
Uneven
Cleavage
On {10 1 0}, perfect; parting on {000 1 }
None
Mohs Hardness
45.5-6
2
10
👆🏻
Chemical Composition
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)