Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.634.32-4.48
1
7.18
👆🏻
Fracture
Uneven
Uneven, Subconchoidal, Conchoidal
Cleavage
{001} Perfect, {010} Good
{101}, good; {010}, poor
Mohs Hardness
6-6.53.5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)