AM_Caledonite Formula: Pb5 Cu2 S3 O21 C H6 Name: Caledonite Unit cell: 20.085 7.141 6.563 90.0 90.0 90.0 , V=941.31 Space group: PMN21 (31)

Schofield P F , Wilson C C , Knight K S , Kirk C A , The Canadian Mineralogist , 47 (2009) p.649-662, Proton location and hydrogen bonding in the hydrous lead copper, sulfates linarite, PbCu(SO4)(OH)2, and caledonite, Pb5Cu2(SO4)3CO3(OH)6, Locality: Leadhills, Lanarkshire, Scotland