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Formula: Pb(UO2)3O3(OH)2.3H2O
Hydroxide, uranyl mineral
Crystal System: Orthorhombic
Specific gravity: 5.08 measured
Colour: Brown-orange, carmine red, red, red-orange
RADIOACTIVE
Environments
Sedimentary environments
Hydrothermal environments
Masuyite is a secondary mineral formed in the oxidised zone
of uranium-bearing deposits. Associated minerals include uraninite,
rutherfordine, becquerelite,
fourmarierite, wyartite,
wölsendorfite, kasolite and
metastudtite
(HOM).
Localities
At the type locality, the Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo, masuyite occurs
as crystals lining cavities in uraninite
(Webmin).
Masuyite from Shinkolobwe - Image
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