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Marumoite

Year of discovery: 2005 (Japan as the first occurence in the World)

Locality list: A locality of marumoite

• Pb₈As₁₀S₂₃
• Pb₃₂As₄₀S₉₂
• [Pb²⁺₃₂][As³⁺₄₀][S₉₂]^184-

• Class: Sartorite group < Large 2D fragment Pb sulfosalts < Sulfosalt class
• Class: Sulfosalt

• Color: Gray
• Luster: Metallic
• Diaphaneity: Opaque

• System: Monoclinic
• Group: 2, P2₁
• Lattice: a=8.4, b=115.8, c=7.9, β=90.1

Etymology: Professor Fumiyuki Marumo (1931-), Japanese mineralogist of Tokyo Institute of Techlnology