Hydrocerussite Siidra O, Nekrasova D, Depmeier W, Chukanov N, Zaitsev A, Turner R Acta Crystallographica B74 (2018) 182-195 Hydrocerussite-related minerals and materials: structural principles, chemical variations and infrared spectroscopy Locality: Merehead quarry, Somerset, England _database_code_amcsd 0020726 5.2475 5.2475 23.6795 90 90 120 R-3m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Pb1 0 0 .21510 .0195 .0196 .0196 .0194 .00978 0 0 Pb2 .91643 -.91643 .00118 1/6 .0245 .0308 .0308 .0217 .0228 -.0008 .0008 C 1/3 2/3 .2337 .020 .016 .016 .028 .008 0 0 O .8084 -.8084 -.0995 .0218 .016 .016 .040 .013 -.0011 .0011 OH 0 0 .3114 .048 .062 .062 .018 .031 0 0