General Information:
Chemical Formula:
UO2CO3·(H2O)
Composition:
(Molecular Weight = 348.05 gm)
Uranium 68.39 % U
Hydrogen 0.58 % H
Carbon 3.45 % C
Oxygen 27.58 % O
Empirical Formula:
(UO2)(CO3)·(H2O)
Environment:
In seams of gypsum along bedding planes of a siltstone within the basal conglomerate member of the Shinarump Formation.
IMA Status:
Approved IMA (Dana # Added)
Locality:
Found by Patrick Haynes in the Jomac uranium mine, Brown's Rim, San Juan County, Utah, U.S.A.
Name Origin:
For Dr. Norbert Blaton (1945-), crystallographer at the University of Leuven, Belgium, a specialist on the crystal structure of uranium minerals.
Physical Properties:
Cleavage:
[100] Parting
Color:
canary yellow.
Density:
3.99 - 4.05, Average = 4.01
Diaphaniety:
Translucent
Habits:
Acicular - Occurs as needle-like crystals., Aggregates - Made of numerous individual crystals or clusters., Radial - Crystals radiate from a center without producing stellar forms (e. g. stibnite)
Hardness:
2-3 - Gypsum-Calcite
Luminescence:
Fluorescent and radioactive, Short UV=strong greenish yellow.
Luster:
Silky
Streak:
white
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