AM_Brontesite Formula: Pb1.09 N2.9 Cl4.86 Br.24 H12 Name: Brontesite Unit cell: 8.4351 15.7732 8.4446 90.0 90.0 90.0 , V=1123.54 Space group: PNMA (62)

Demartin F , Gramaccioli C M , Campostrini I , The Canadian Mineralogist , 47 (2009) p.1237-1243, Brontesite, (NH4)3PbCl5, a new product of fumarolic activity from La Fossa Crater,, Vulcano, Aeolian Islands, Italy, Locality: La Fossa Crater, Vulcano, Aeolian Islands, Italy