Pb3O2(CO3) Krivovichev S V, Burns P C Mineralogical Magazine 64 (2000) 1077-1087 Crystal chemistry of basic lead carbonates. III. Crystal structures of Pb3O2(CO3) and NaPb2(OH)(CO3)2 Locality: synthetic _database_code_amcsd 0014552 22.194 9.108 5.7405 90 90 90 Pnma atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Pb1 .42738 .25 .7828 .0082 .0059 .0089 .0097 0 .0010 0 Pb2 .18557 -.25 .7855 .0096 .0047 .0122 .0120 0 -.0014 0 Pb3 .32522 -.0487 .7845 .0132 .0188 .0083 .0124 -.0077 .0007 -.0001 Pb4 .06986 .0226 .7821 .0140 .0168 .0150 .0103 -.0099 -.0010 -.0004 C1 -.036 -.25 .741 .0120 C2 .207 .25 .799 .0180 O1 .1279 -.097 .532 .0080 O2 .1288 -.098 .034 .0060 O3 .146 .25 .785 .0150 O4 .023 -.25 .787 .0120 O5 -.0612 -.125 .710 .0220 O6 .236 .127 .786 .0410