Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.98-4.042.82
1
7.18
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Fracture
Conchoidal
-
Cleavage
Imperfect, poor one {100}
Perfect in one direction, indistinct in one direction
Mohs Hardness
4.5-56
2
10
👆🏻
Chemical Composition
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]