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Lindbergite

Year of discovery: 2003 (Boca Rica claim, Brazil), 2025 (Japan)

Locality list: A locality of lindbergite

• MnC₂O₄,2H₂O
• [Mn²⁺][(COO)₂]^2-,2H₂O

• Class: Humboldtine group
• Class: Oxalate - Hydrate
• Formed by dehydration of Falottaite in the air.

• Mn => Fe: Humboldtine
• Mn => Ca: Weddellite
• Mn => Mg: Glushinskite
• Mn => Ni: Andreybulakhite
• Mn => Zn: Katsarosite

• 2H₂O => 3H₂O: Falottaite

• Color: White, Grayish white
• Streak: White
• Luster: Vitreous
• Diaphaneity: Trasnparent

• Cleavage: Perfect on {010} (a plane)
• Hardness: 2.5
• Density: 2.1

• System: Monoclinic
• Group: 2/m, C2/c
• Lattice: a=12.0, b=5.6, c=1.0, , β=128.3