Namuwite

General Information:
 Chemical Formula:
(Zn,Cu)4(SO4)(OH)6·4(H2O)
 Composition:
(Molecular Weight = 528.04 gm)
Zinc 24.77 % Zn
Copper 24.07 % Cu
Hydrogen 2.67 % H 
Sulfur 6.07 % S 
Oxygen 42.42 % O 
 Empirical Formula:
Zn2Cu2(SO4)(OH)6·4(H2O)
 Environment:
Encrusting hydrozincite.
 IMA Status:
Approved IMA 1981
 Locality:
Averllyn lead mine, Llanrwst mining district, northern Wales.
 Name Origin:
Named for the country of origin, and the National Museum of Wales.
Physical Properties:
 Cleavage:
[0001] Perfect
 Color:
light green or pale sea green.
 Density:
2.77
 Habits:
Encrustations - Forms crust-like aggregates on matrix., Hexagonal - Six-sided crystal shape in cross-section or habit., Platy - Sheet forms (e.g. micas).
 Hardness:
2 - Gypsum
 Luster:
Pearly
 Streak:
pale green
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