Lepersonnite-(Gd) is a very rare uranium and rare-earth mineral with the chemical formula . It occurs with bijvoetite-(Y) in the Shinkolobwe deposit in the Democratic Republic of the Congo, famous for rare uranium minerals. It was the first confirmed mineral with essential gadoliniumGadolinium: The mineralogy of gadolinium - Mindat. org http://www.mindat.org/element/Gadolinium</reF> and remained the only gadolinium dominant species until the description of Monazite-(Gd) in 2023.
It was first described in 1982 and is named after the Belgian geologist Jacques Lepersonne.