Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.95-3.074.32-4.48
1
7.18
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Fracture
Conchoidal
Uneven, Subconchoidal, Conchoidal
Cleavage
Perfect on {110} at 56° and 124°; partings on {010} and {100}
{101}, good; {010}, poor
Mohs Hardness
5-63.5
2
10
👆🏻
Chemical Composition
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)