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Formula: Ca(UO2)6O4(OH)6.8H2O
Hydroxide, uranyl mineral
Crystal System: Orthorhombic
Specific gravity: 5.09 to 5.2 measured, 5.1 calculated
Hardness: 2½
Streak: Yellow
Colour: Amber-yellow, golden to lemon-yellow, yellow-orange, brownish yellow, yellow in transmitted light
Common impurities: Pb
RADIOACTIVE
Environments
Pegmatites
Sedimentary environments
Hydrothermal environments
Becquerelite occurs as a weathering product of uraninite in oxidised portions of uranium
deposits, and, more rarely, in pegmatites
(HOM).
Localities
At the type locality, the Shinkolobwe mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo, becquerelite occurs among weathering
products of uraninite in the oxidised portions of a uranium deposit, associated with
uraninite, schoepite,
soddyite, curite,
fourmarierite, dewindtite,
ianthinite, wölsendorfite,
rutherfordine, masuyite and
kasolite
(HOM), Mindat.
Becquerelite from Shinkolobwe - Image
At the Wölsendorf fluorite mining district, Upper Palatinate, Bavaria, Germany, becquerelite occurs in a
fluorite deposit with schoepite and
uraninite
(Dana).
At the Happy Jack Mine, White Canyon, San Juan county, Utah, USA, becquerelite is associated with
johannite, uranopilite and
zippeite
(HOM).
Becquerelite from the Happy Jack
mine - image
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