Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.103.7-3.9
1
7.18
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Fracture
Uneven
Conchoidal
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
{001} perfect; {111} imperfect, may exhibit parting on , {011}
Mohs Hardness
3.5-45.5-6
2
10
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Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)