Sklodowskite

minerals

uranophane

novacekite

zeunerite

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Formula: Mg(UO2)2(SiO3OH)2.6H2O
Nesosilicate (insular SiO4 groups), sklodowskite group
Specific gravity: 3.54
Hardness: 2 to 3
Streak: Yellow
Colour: Light yellow to green-yellow
Common impurities: Te,Ni,Na,K
RADIOACTIVE
Environments

Sedimentary environments
Hydrothermal environments

Sklodowskite is a rare secondary silicate formed by the action of silica-bearing waters on uraninite or earlier-formed secondary uranium minerals. Associated minerals include kasolite, soddyite, torbernite, uranophane, uranophane-β, nováčekite, metazeunerite and curite (HOM).

Localities

At the Pedra Preta magnesite mine, Brumado, Brazil, sklodowskite is associated with nováčekite and zeunerite (Dana).

At the type locality, the Shinkolobwe mine, Kambove District, Haut-Katanga, DR Congo, sklodowskite occurs as acicular crystals and as pseudomorphs after uraninite (Dana).

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