Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.784.32-4.48
1
7.18
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Fracture
Uneven, Conchoidal
Uneven, Subconchoidal, Conchoidal
Cleavage
{???} Distinct, {???} Indistinct
{101}, good; {010}, poor
Mohs Hardness
5-63.5
2
10
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Chemical Composition
3CaAl 2Si 2O 8 · CaCO 3Anthony et al , Handbook of mineralogy (2001)
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)