1) Halide mineral 2) Orthorhombic mineral 
Cotunnite is the natural mineral form of lead(II) chloride with formula PbCl2. It was first described in 1825 from an occurrence on Mount Vesuvius, Naples Province, Campania, Italy. It was named for Domenico Cotugno (Cotunnius) (1736–1822), Italian physician and Professor of Anatomy. It was first recognized in volcanic fumarole deposits. It occu...
Lead chloride
a soft, white to yellowish mineral, lead chloride, PbCl, that forms as an alteration product of galena.