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Sklodowskite

Year of discovery: 1924 (Shinkolobwe mine (Kasolo mine), Congo (Zaïre)), 2012 (Japan)

Locality list: A locality of sklodowskite

• Mg(UO₂)₂(HSiO₄)₂,5H₂O
• [Mg²⁺][(UO₂)²⁺₂][(HSiO₄)₂]^6-,5H₂O

• Class: Uranophane group
• Class: Uranyl - Nesosilicate - Hydrate
• Radioactive: Very strong

• Mg => Ca: Uranophane, β-Uranophane
• Mg => Co: Oursinite
• Mg => Cu: Cuprosklodowskite

• Color: Pale yellow, Yellowish green
• Streak: Yellow
• Luster: Adamantine
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {100} (1 planes)
• Hardness: 2-3
• Density: 3.5

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=17.4, b=7.0, c=6.6, β=105.9