Françoisite-(Nd)

francoisite-(Nd)

uraninite

schoepite

uranophane

Images

Formula: Nd(UO₂)₃O(OH)(PO₄)₂.6H₂O
Hydrated phosphate containing hydroxyl, phosphuranylite group
Crystal System: Monoclinic
Specific gravity: 4.06 measured, 4.63 calculated
Hardness: 3
Streak: White, yellow
Colour: Yellow
RADIOACTIVE
Environments

Sedimentary environments

Localities

At the type locality, the Kamoto East Open cut, Kamoto, Kolwezi mining district, Lualaba, DR Congo, françoisite-(Nd) occurs as a rare alteration product of uraninite in a sedimentary copper-cobalt deposit as aggregates of yellow, translucent, nonfluorescent crystals up to 0.3 mm long. Associated minerals include uraninite, schoepite, uranophane-α, curite, schuilingite-(Nd), kamotoite-(Y), astrocyanite-(Ce) and masuyite (AM 75.241, HOM).

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