AM_Kirkiite_1 Formula: Pb11 Bi2 As3 S19 Name: Kirkiite Unit cell: 8.7 26.237 8.774 90.0 119.653 90.0 , V=1740.48 Space group: P121/M1 (11)

Pinto D , Balic-Zunic T , Garavelli A , Garbarino C , Makovicky E , Vurro F , European Journal of Mineralogy , 18 (2006) p.393-401, First occurrence of close-to-ideal kirkiite at Vulcano (Aeolian Islands,, Italy): chemical data and single-crystal X-ray study, Locality: La Fossa crater, Vulcano, Aeolian Islands, Italy