Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
2.55-2.632.93-2.96
1
7.18
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Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
{001} Perfect, {010} Good
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
6-6.53.5-4
2
10
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Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references