AM_Mereheadite Formula: Pb47 Cl25 O46 C B2 H13 Name: Mereheadite Unit cell: 17.372 27.9419 10.6661 90.0 93.152 90.0 , V=5169.56 Space group: C1M1 (8)

Krivovichev S V , Turner R , Rumsey M , Sidra O I , Kirk C A , Mineralogical Magazine , 73 (2009) p.103-117, The crystal structure and chemistry of mereheadite, Locality: Merehead Quarry, Cranmore, Somerset, England