Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
5.50-5.902.72
1
7.18
👆🏻
Fracture
Conchoidal
-
Cleavage
On {10 1 0}, perfect; parting on {000 1 }
{110} Perfect, {010} Perfect
Mohs Hardness
45-6
2
10
👆🏻
Chemical Composition
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)