Francevillite

(Ba,Pb)(UO2)2(VO4)2.5H2O

This sample of francevillite is displayed in the Smithsonian Museum of Natural History. Francevillite is a oxide mineral of uranium with vanadium, lead and barium. It has the composition (Ba,Pb)(UO2)2(VO4)2.5H2O. The sample at left is about 12 cm across and is from Mounana, Gabon.

Mindat: Francevillite

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