General Information:
Chemical Formula:Cu++5(CO3)3(OH)4·6(H2O)
Composition:(Molecular Weight = 639.86 gm)Copper 49.66 %
CuHydrogen 2.21 %
H Carbon 5.63 %
C Oxygen 42.51 %
O Empirical Formula: Cu5(CO3)3(OH)2·6(H2O)
Environment:Amorphous analog of malachite. Weathered tremolitic rock that contains disseminated copper and iron sulfides.
IMA Status:Approved IMA 1979
Locality:Carr Boyd mine, 100 km N of Kalgoorlie, WA, Australia.
Name Origin:Named for George Herbert Payne (1912-1989), past chief of the mineral division, Western Australian Government Chemical Laboratories.
Physical Properties: Color:light blue.
Density:2.55
Diaphaniety:Transparent to Subopaque
Habits:Encrustations - Forms crust-like aggregates on matrix., ,
Hardness:1-2 - Between Talc and Gypsum
Luster:Vitreous - Dull
Streak:light blue
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