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Andersonite

Year of discovery: 1948 (Hillside mine, USA), 1976 (Japan)

Locality list: A locality of andalusite

• Na₂Ca(UO₂)(CO₃)₃,6H₂O
• [Na⁺₂][Ca²⁺][UO₂²⁺][(CO₃)₃]^6-,6H₂O

• Class: Uranyl - Carbonate - Hydrate
• Soluble in: Water
• Fluorescence: UV excitation (Yellow green)
• Radioactive: Very strong

• Color: Green-Yellowish green
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Hardness: 2.5
• Density: 2.8

• System: Trigonal
• Group: (-3), R(-3)
• Lattice: a=18.0, c=23.8