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Torbernite

Year of discovery: 1793 (Johanngeorgenstadt, Germay), 1934 (Japan)

Locality list: 38 localities of torbernite

• Cu(UO₂)₂(PO₄)₂,12H₂O
• Cu(UO₂)₂(PO₄)₂,8-12H₂O
• [Cu²⁺][(UO₂)²⁺₂][(PO₄)₂]^6-,12H₂O

• Class: Uranyl - Phosphate - Hydrate
• Soluble in: HCl, HNO₃, H₂SO₄
• Radioactive: Very strong
• Dehydrates to Metatorbernite.

• Cu => Ca: Autunite
• Cu => Mn: Fritzscheite
• Cu => Mg: Saléeite (Saleeite)
• Cu => Ba: Uranocircite

• PO₄ => AsO₄: Zeunerite (Series)

• 10H₂O => 8H₂O: Metatorbernite

• Color: Green
• Streak: Pale green
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Habit: Thin platy

• Cleavage: Perfect on {001} (1 plane), Indistinct on {100} (1 plane)
• Hardness: 2-2.5
• Density: 3.2

• System: Tetragonal
• Group: 4/mmm, I4/mmm
• Lattice: a=7.0, c=20.8