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Agardite-(La)

Year of discovery: 1980 (Red Cloud mine, USAMorocco), 2025 (Japan)

Locality list: 2 localities of agardite-(La)

• LaCu₆(AsO₄)₃(OH)₆,3H₂O
• (La,Ca)Cu₆(AsO₄,HAsO₄)₃(OH)₆,3H₂O
• [La³⁺][Cu²⁺₆][(OH)₆|(AsO₄)₃]^15-,3H₂O

• Class: Agardite series < Mixite group
• Class: Arsenate - Hydroxide - Hydrate

• La => Bi: Mixite
• La => Y: Agardite-(Y) (Series)
• La => Nd: Agardite-(Nd) (Series)
• La => Ce: Agardite-(Ce) (Series)
• La => Al: Goudeyite

• La => CaH: Zálesíite (Zalesiite)
• La => PbH: Plumboagardite

• AsO₄ => PO₄: Petersite-(La)

• Color: Yellow green, Dark green, Bluish green
• Streak: Pale green
• Luster: Sub-vitreous, Resinous
• Diaphaneity: Transparent - Translucent

• Cleavage: No
• Hardness: 3 - 4
• Density: 3.7

• System: Hexagonal
• Group: 6/m, P6₃/m
• Lattice: a=13.6, c=5.9