General Information:
Chemical Formula:
Ca(UO2)(CO3)2·5(H2O)
Composition:
(Molecular Weight = 520.20 gm)
Calcium 7.70 % Ca
Uranium 45.76 % U
Hydrogen 1.94 % H
Carbon 4.62 % C
Oxygen 39.98 % O
Empirical Formula:
Ca(UO2)(CO3)2·5(H2O)
Environment:
Sediment-hosted uranium deposits.
IMA Status:
Approved IMA 1966
Locality:
Lucky Mc mine, Freemont County, and Pat No. 8 mine, Powder River Basin, Wyoming.
Name Origin:
Named for Howard D. Zeller (1922-), U. S. Geological Survey, who found the mineral.
Physical Properties:
Cleavage:
None
Color:
white yellow or lemon.
Density:
3.25
Habits:
Acicular - Occurs as needle-like crystals., ,
Hardness:
2 - Gypsum
Luminescence:
Weakly Fluorescent.
Luster:
Earthy (Dull)
Streak:
white
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