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Formula: Pb2(UO2)5O6(OH)2.4H2O
Hydroxide, uranyl mineral
Crystal System: Monoclinic
Specific gravity: 6.76 calculated
Colour: Yellow-orange, red-orange
Very strongly RADIOACTIVE
Environments
Sedimentary environments
Hydrothermal environments
Sayrite is one of the rarest lead uranyl oxyhydroxides
(Lauf2). It was approved in 1982.
Localities
At the type locality, the Shinkolobwe Mine, Shinkolobwe, Kambove Territory, Haut-Katanga, DR Congo, sayrite
occurs in the uranium deposit. It appears as little prismatic yellow-orange
to red-orange crystals up to 0.6 x 0.3 x 0.1 mm3 in size, associated with
uraninite, uranophane,
becquerelite, masuyite and
richetite
(Lauf2, AM 69.568).
Sayrite from Shinkolobwe - Image
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