Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.98-4.043.05-3.21
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
Imperfect, poor one {100}
None
Mohs Hardness
4.5-57-7.5
2
10
👆🏻
Chemical Composition
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Al,Mn3+ ) 2SiO 4OGemdat.org , Management Team (2012)