Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.32-4.483.04-3.17
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Uneven
Cleavage
{101}, good; {010}, poor
{001} Indistinct, {???} Indistinct
Mohs Hardness
3.55.5
2
10
👆🏻
Chemical Composition
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references