Description
Francevillite is a mineral species composed of hydrated uranyl vanadate, barium and lead, with the formula (Ba,Pb)(UO2)2(VO4)2-5H2O. Francevillite forms a continuous series with curienite.
It occurs here in good orange crystals in association with the more yellow curienite (first described from this deposit).
A very fine specimen from the former Mounana uranium mines in Haut-Ogooué, Gabon, in the Michel Maigrot collection.
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