General Information:
Chemical Formula:
Cu5Zn3(Te++++++O4)4(OH)8·7(H2O)
Composition:
(Molecular Weight = 1,542.46 gm)
Zinc 12.72 % Zn
Copper 20.60 % Cu
Tellurium 33.09 % Te
Hydrogen 1.44 % H
Oxygen 32.16 % O
Empirical Formula:
Cu5Zn3(TeO4)4(OH)8·7(H2O)
Environment:
An extremely rare secondary Cu-Te mineral found as a product of oxidation.
IMA Status:
Approved IMA (Dana # Added)
Locality:
The Centennial Eureka mine, 1 mile southeast of Eureka, Tintic District, Juab County, Utah, USA.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
None
Color:
pale blue or greenish blue.
Density:
5.33
Diaphaniety:
Translucent
Habits:
Aggregates - Made of numerous individual crystals or clusters., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).,
Hardness:
4-5 - Fluorite-Apatite
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Adamantine
Streak:
pale blue
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