Coconinoite
A variety of Minerals
What is Coconinoite?
Coconinoite is a uranium ore that was discovered in Coconino County, Arizona. It is a phosphate mineral; or uranyl phosphate mineral along with other subclass uranium U minerals like blatonite, boltwoodite, metazeunerite and rutherfordine.
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Key Characteristics
Characteristics of Coconinoite
The mineral has a white streak and a pale creamy yellow color. The mineral occurs as microscopic crystals, the largest found is 6 by 20 micrometers. It is a radioactive mineral, but not fluorescent. Upon heating for dehydration it is found that the mineral loses some of its SO2 at 600 to 800 °C.
Composition of Coconinoite
The chemical formula is Fe2Al2(UO2)2(PO4)4(SO4)(OH)2·20H2O. The chemical formula was derived from the spectrographic analysis.
Quick Facts
Physical Properties
- Color
- Pale creamy yellow
- Density
- 2.68 g/cm³
Chemical Properties
- Chemical Formula
- Fe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2O
- Elements
- Al, Fe, H, O, P, S, U
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