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Minium

Year of discovery: Prehistoric (World), 1891 (Japan)

Locality list: A locality of minium

• Pb₃O4
• [Pb²⁺₂][Pb⁴⁺][O₄]^8-

• Class: Oxide

• Color: Red, Orange
• Streak: Orange
• Luster: Greasy
• Diaphaneity: Translucent

• Cleavage: Perfect on {110} and {010} (4 planes)
• Hardness: 2.5
• Density: 9.0

• System: Tetragonal
• Group: 4/mmm, P4₂/mbc
• Lattice: a=8.8, c=6.6