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Zeunerite

Year of discovery: 1872 (Weißer Hirsch mine, Germany), 1950 (Japan)

Locality list: 10 localities of zeunerite

• Cu(UO₂)₂(AsO₄)₂,12H₂O
• [Cu²⁺][(UO₂)²⁺₂][(AsO₄)₂]^6-,12H₂O

• Class: Autunite group
• Class: Uranyl - Arsenate - Hydrate
• Radioactive: Very strong
• Dehydrate to Metazeunerite.

• Cu => Fe: Kahlerite
• Cu => Mg: Nováčekite I (Novacekite I)
• Cu => UO₂: Trögerite (Trogerite)

• AsO₄ => PO₄: Torbernite (Series)

• 12H₂O => 8H₂O: Metazeunerite
• 12H₂O => 11H₂O: Uranospinite

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

• Cleavage: Perfect on {001} (1 plane), Distinct on {100} (1 plane)
• Hardness: 2.5
• Density: 3.5

• System: Tetragonal
• Group: 4/mmm, I4/mmm
• Lattice: a=7.2, c=20.9