1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Poorly soluble in dilute HCl
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
{???} Indistinct
Perfect on {10 1 1}, rhombohedral cleavage
1.7 Mohs Hardness
1.8 Chemical Composition
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references