Tenacity
Brittle
Brittle
Solubility
Soluble
Dilute acid
Durability
-
-
Specific Gravity
4.3-52.93-2.96
1
7.18
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Fracture
Irregular/uneven
Subconchoidal, Conchoidal
Cleavage
Perfect cleavage parallel to base and prism faces: {001} Perfect, {210} Perfect, {010} Imperfect
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
3-3.53.5-4
2
10
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Chemical Composition
BaSO4
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references