Images
Formula: Mg(U6+O2)2(SiO3OH)2.6H2O
Nesosilicate (insular SiO4 groups), uranyl mineral,
sklodowskite group
Crystal System: Monoclinic
Specific gravity: 3.54 measured, 3.51 calculated
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,
parauranophane, 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).
Sklodowskite from Shinkolobwe - Image
Back to Minerals