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Metazeunerite

Year of discovery: 1937 (Weißer Hirsch mine, Germany), 1955 (Japan)

Locality list: 6 localities of metazeunerite

• Cu(UO₂)₂(AsO₄)₂,8H₂O
• [Cu²⁺][(UO₂)²⁺₂][(AsO₄)₂]^6-,8H₂O

• Class: Autunite group
• Class: Uranyl - Arsenate - Hydrate
• Soluble in: HCl, HNO₃, H₂SO₄
• Fluorescence: UV excitation (Yellowish green)
• Radioactive: Very strong
• Formed on dehydration of Zeunerite.

• Cu => Ca: Metauranospinite

• AsO₄ => PO₄: Metatorbernite (Series)

• 8H₂O => 12H₂O: Zeunerite

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

• Cleavage: Perfect on {001} (1 plane), Distinct on {010} (1 plane)
• Hardness: 2-2.5
• Density: 3.6

• System: Tetragonal
• Group: 4/m, P4₂/n
• Lattice: a=7.1, c=17.4

Etymology: Meta- (with) in Greek