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Oxyplumboroméite (Photo), Oxyplumboromeite

Year of discovery: 1868 (Nerchinsk deposit, Russia), 1959 (Japan)

Locality list: A locality of oxyplumboroméite

• Pb₂Sb₂O₇
• (Pb,Ca,Mn)₂(Sb,Fe³⁺)₂O₆(O,OH)
• [Pb²⁺₂][O|(SbO₃)₂]^4-

• Class: Roméite group(Romeite group) < Pyrochlore supergroup
• Class: Antimonate - Oxide
• Soluble in: HCl (PbCl₂ residue), HNO₃ (SbCl₃ residue)
• Alter to Massicot (PbO).
• Substitution pseudomorph: Replace Jamesonite, Tetrahedrite-(Fe), Galena, Bournonite, or Zinkenite.

• Pb₂O => Sb(OH): Hydroxystibioroméite (Hydroxystibioromeite)

• Color: Yellow, Brown, White
• Streak: Pale yellow
• Luster: Resinous
• Diaphaneity: Translucent-Opaque

• Cleavage: No
• Hardness: 4-4.5
• Density: 5.9

• System: Cubic
• Group: m3m, Fd3m
• Lattice: a=10.4

Synonym: Bindheimite, Monimolite