Min. [Named after Dr. Cotugna of Naples: see -ITE.] Native lead chloride found in white acicular crystals in the crater of Vesuvius.
[1827. Amer. Jrnl. Sc., XII. 185. Muriate of lead, to which the authors give the name of Cotunnia.]
1834. Allan, Man. Min., 304. Cotunnite … fuses very easily before the blowpipe.
1869. Phillips, Vesuvius, x. 280. Chloride of Lead—‘Cotunnite’—found in the fissures of the Vesuvian lava.
