Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.93.70-3.90
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal
Cleavage
{???} Indistinct
Perfect on {011}, fair on {100}, poor on {110}
Mohs Hardness
4.53.5-4
2
10
👆🏻
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references