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Phosgenite

Year of discovery: 1841 (World), 2015 (Japan)

Locality list: A locality of phosgenite

• Pb₂CO₃Cl₂
• [Pb²⁺₂][Cl₂|CO₃]^4-

• Class: Carbonate - Chloride
• Soluble in: Water (Decompose), HNO₃ (with bubbles)
• Fluorescence: UV excitation (Yellow), Cathodo luminescence (Yellow)
• Substitution pseudomorph: Replace Cerussite.
• Substitution pseudomorph: Replaced by Cerussite.

• Cl₂ => O: Shannonite

• Color: Colorless, Brown, Green
• Streak: White
• Luster: Adamantine
• Diaphaneity: Transparent-Translucent

• Cleavage: Good on {110}{001} (3 planes), Indistinct on {010} (2 planes)
• Hardness: 2-3
• Density: 6.1

• System: Tetragonal
• Group: 4/mmm, P4/mbm
• Lattice: a=8.2, c=8.9