Barstowite Steele I M, Pluth J J, Stanley C J Mineralogical Magazine 63 (1999) 901-907 Crystal structure of barstowite (3PbCl2PbCO3H2O) Locality: Bounds Cliff, St Endellion, Cornwall _database_code_amcsd 0014538 4.2023 9.2020 16.6608 90 91.829 90 P2_1/m atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Pb1 .2609 .75 .0415 .0273 .0223 .0329 .0266 0 .0003 0 Pb2 .2542 .75 .5116 .0285 .0224 .0336 .0296 0 .0010 0 Pb3 .8100 .5096 .2682 .0189 .0187 .0134 .0246 -.0008 -.0009 -.0018 Cl1 .2892 .75 .2189 .0187 .019 .016 .021 0 -.002 0 Cl2 .7690 .5309 .0879 .0208 .023 .020 .019 .001 .0008 .0014 Cl3 .7443 .75 .3957 .0195 .025 .017 .016 0 .001 0 Cl4 .7618 .5502 .5858 .0214 .024 .018 .022 .003 -.0037 .0007 C .416 .25 .2457 .016 .013 .012 .023 0 .015 0 O1 .675 .25 .2875 .021 .014 .015 .034 0 -.005 0 O2 .753 .75 -.0632 .019 .022 .017 .016 0 -.001 0 O3 .293 .3729 .2229 .018 .020 .010 .024 .003 .000 .002 H .7492 .6640 -.0969