Phosgenite is a carbonate mineral containing lead and chlorine. It has the composition Pb2CO3Cl2. The origin of this sample is Monteponi, Sardegna, Italy. The sample measures about 10 cm across. These sample are on display in the Smithsonian Museum of Natural History.
The phosgenite samples above are both about 10 cm across and are from Monteponi, Sardegna, Italy.