Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.724.00-4.62
1
7.18
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Fracture
-
Conchoidal, Uneven
Cleavage
{110} Perfect, {010} Perfect
Indistinct parting on [111]
Mohs Hardness
5-67.5-8
2
10
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Chemical Composition
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)