Spriggite

spriggite

uranophane

soddyite

boltwoodite

Images

Formula: Pb3(UO2)6O8(OH)2.3H2O
Oxide
Specific gravity: 7.64
Hardness: 4
Streak: Pale orange
Colour: Bright orange
RADIOACTIVE
Environments

Hydrothermal environments

Localities

At the type locality, Mount Painter No. 2 workings, Mt Painter area, Arkaroola Region, North Flinders Ranges, South Australia, spriggite occurs as prismatic crystals to 0.15 mm, forming aggregates to 1 cm across, in strongly oxidised samples of a quartz-hematite breccia enriched in uranium, niobium and rare earth element minerals. The spriggite results from the supergene alteration of the breccia. Associated minerals include uranophane-β, soddyite, smoky quartz, kasolite, cerium-rich françoisite-(Nd), metatorbernite, hematite, billietite, barium-bearing boltwoodite, schoepite, rutherfordine, metaschoepite and weeksite (AM 89.399-347, Mindat, HOM).

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