Tenacity
Brittle
Brittle
Solubility
insoluble in water
Soluble
Durability
-
-
Specific Gravity
5.00-5.204.3-5
1
7.18
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Fracture
Uneven, Conchoidal, ConchoidalWalter Schumann
Irregular/uneven
Cleavage
Indistinct on {001}; partings on {011} and {111}
Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect
Mohs Hardness
6-6.53-3.5
2
10
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Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
BaSO4