Juabite

General Information:
 Chemical Formula:
Fe++Cu10(Te+++O3)(As+++++O4)4(OH)2·4(H2O)
 Composition:
(Molecular Weight = 1,528.66 gm)
Iron 3.65 % Fe
Copper 41.57 % Cu
Tellurium 8.35 % Te
Arsenic 19.60 % As
Hydrogen 0.66 % H 
Oxygen 26.17 % O 
 Empirical Formula:
Fe2+Cu10(TeO3)(AsO4)4(OH)2·4(H2O)
 IMA Status:
Approved IMA
 Locality:
Found in the Centennial Eureka mine, Juab County, Utah, U.S.A.
 Name Origin:
Named after its discovery locality.
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
emerald green or light green.
 Density:
4.59
 Diaphaniety:
Transparent to Translucent
 Hardness:
3-4 - Calcite-Fluorite
 Luster:
Vitreous - Adamantine
 Streak:
pale green
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