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Buserite

Year of discovery: 1992 (Japan as the first occurence in the World)

Locality list: 2 localities of buserite

• Na₄Mn₁₄O₂₇,21H₂O
• Na₄(Mn,Cu,Ni)₁₄O₂₇,21H₂O
• [Na⁺₄][(Mn⁴⁺,Mn³⁺,Cu²⁺,Ni²⁺)₁₄][O₂₇]^54-,21H₂O

• Class: Oxide - Hydrate
• Dehydrate to Birnessite.
• Included in Manganese nodules of rough surface with Vernadite by forming concentric zoning structure.

• Color: Brown
• Diaphaneity: Opaque

• Habit: Very fine tabular

• Significance: Weakly oxidized condition. Formed by diagenetic process on the surface of sediments.