AM_Steropesite Formula: Tl3 Bi Cl5.322 Br.558 Name: Steropesite Unit cell: 26.686 15.127 13.014 90.0 108.11 90.0 , V=4993.23 Space group: C1C1 (9)

Demartin F , Gramaccioli C M , Campostrini I , The Canadian Mineralogist , 47 (2009) p.373-380, Steropesite, Tl3BiCl6, a new thallium bismuth chloride from La Fossa crater, Vulcano, Aeolian Islands, Italy, Locality: La Fossa crater, Vulcano, Aeolian Islands, Italy