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Formula: Pb7(UO2)14O19(OH)4.12H2O
Hydroxide, uranyl mineral
Crystal System: Orthorhombic
Specific gravity: 6.8 measured, 6.815 calculated
Hardness: 5
Colour: Orange-red, bright carmine-red
RADIOACTIVE
Environments
Sedimentary environments
Hydrothermal environments
Wölsendorfite occurs as orange-red spherulitic crystals associated with other
secondary species as an alteration product on or near
uraninite
(Lauf2).
Localities
At Port Radium District, Great Bear Lake, North Slave Region, Northwest Territories, Canada, wölsendorfite
occurs on pitchblende
(AM 42.919).
At the Shinkolobwe mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo, wölsendorfite occurs as a rare
alteration product of uraninite in the oxide zone of
uranium-bearing mineral
deposits. Associated minerals include uraninite,
rutherfordine,
becquerelite,
masuyite, kasolite and
metastudtite
(HOM).
Wölsendorfite from Shinkolobwe - Image
At Kerségalec, Lignol, Pontivy, Morbihan, Brittany, France, wölsendorfite occurs with
pitchblende
(AM 42.919).
The type locality is the Wölsendorf fluorite mining district, Upper Palatinate, Bavaria, Germany.
Wölsendorfite from the
Wölsendorf fluorite mining district - Image
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