Tenacity
Brittle
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.60-2.654.3-5
1
7.18
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Fracture
Uneven, Conchoidal
Irregular/uneven
Cleavage
Perfect on {001}, very good on {010}, imperfect on {110}
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
NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
BaSO4