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Uranocircite

Year of discovery: 1877 (Streuberg quarry, Germany), 1965 (Japan)

Locality list: 5 localities of uranocircite

• Ba(UO₂)₂(PO₄)₂,10H₂O
• [Ba²⁺][(UO₂)²⁺₂][(PO₄)₂]^6-,10H₂O

• Class: Autunite group
• Class: Uranyl - Phosphate - Hydrate
• Soluble in: HCl, HNO₃, H₂SO₄
• Fluorescence: UV excitation (Green)
• Radioactive: Very strong
• Dehydrate to Metauranocircite.

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

• PO₄ => AsO₄: Heinrichite

• 10H₂O => 7H₂O: Metauranocircite

• System: Tetragonal
• Group: 4/mmm, P4/nnc
• Lattice: a=7.0, c=20.5