Tenacity
-
-
Solubility
-
Insoluble in acids
Durability
-
-
Specific Gravity
2.94.20-4.30
1
7.18
👆🏻
Fracture
Conchoidal
Uneven, Conchoidal
Cleavage
{???} Indistinct
{110} good, 100 moderate, parting on {092} and {011}
Mohs Hardness
4.56-6.5
2
10
👆🏻
Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)