Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.16-3.432.72
1
7.18
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Fracture
Uneven, Conchoidal
-
Cleavage
{110} Good, {110} Good
{110} Perfect, {010} Perfect
Mohs Hardness
5-65-6
2
10
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Chemical Composition
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)