Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.80-4.90-9999
1
7.18
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Fracture
Uneven
-
Cleavage
{010} Indistinct
None
Mohs Hardness
6-6.53-4
2
10
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Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Celestite, Andalusite, Feldspar, Dolomite, Gypsum, Halloysite, Kaolinite, Montmorillonite, Sepiolite, Smectite, Vermiculite