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Uranopilite

Year of discovery: 1882 (Jáchymov, Czech, and Johanngeorgenstadt, Germany), 1968 (Japan)

Locality list: 3 localities of uranopilite

• (UO₂)₆SO₄(OH)₁₀,14H₂O
• (UO₂)₆SO₄(OH)₁₀,12-14H₂O
• [(UO₂)²⁺₆][(OH)₁₀|SO₄]^12-,14H₂O

• Class: Uranyl - Sulfate - Hydroxide - Hydrate
• Soluble in: HCl
• Fluorescence: UV excitation (Yellowish green)
• Radioactive: Very strong
• Dehydrate to Meta-uranopilite.

• 14H₂O => 5H₂O: Meta-uranopilite

• Color: Yellow
• Luster: Silky
• Diaphaneity: Translucent

• Cleavage: Perfect on {010} (1 plane)
• Density: 3.9

• System: Monoclinic