Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.102.59
1
7.18
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Fracture
Uneven
-
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
None
Mohs Hardness
3.5-46-6.5
2
10
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Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Na,Ca)2(Fe2+,Mg)3Si3O10