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Kasolite

Year of discovery: 1921 (Shinkolobwe mine (Kasolo mine), Congo (Zaïre)), 1959 (Japan)

Locality list: 2 localities of kasolite

• Pb(UO₂)SiO₄,H₂O
• [Pb²⁺][UO₂²⁺][SiO₄]^4-,H₂O

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

• Color: Yellow, Brown
• Streak: Pale yellowish brown
• Luster: Resinous
• Diaphaneity: Transparent-Opaque

• Cleavage: Perfect on {001} (1 planes), Indistinct on {100} and {010} (2 planes)
• Hardness: 4-5
• Density: 6.2

• System: Monoclinic
• Group: 2/m, P2₁/a
• Lattice: a=13.2, b=6.9, c=6.7, β=104.3