Specific gravity: 3.97
Streak: Light yellow
Colour: Bright yellow
Lepersonnite-(Gd) is a unique species being the only approved and named mineral with dominant gadolinium; to date
(November 2021) it has been found only at the type locality
At the type locality, the Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo, lepersonnite occurs as mammilary crusts and as isolated spherules made up of radiating acicular crystals, together with hydrated uranium oxides near primary uraninite in the lower part of the oxidation zone. Associated minerals include bijvoetite, sklodowskite, curite, uranophane, becquerelite, rutherfordine and studtite (AM 68.1248 abstracted from CM 20.231-238).
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