Semseyite
Kohatsu J J, Wuensch B J
American Mineralogist 59 (1974) 1127-1127
Semseyite (Pb9Sb8S21) and the crystal chemistry of the plagionite group,
Pb3+2nSb8S15+2n
Note: structure from ICSD
_database_code_amcsd 0000427
13.603 11.936 24.453 90 106.047 90 C2/c
atom     x     y     z Biso B(1,1) B(2,2) B(3,3)  B(1,2) B(1,3)  B(2,3)
Pb1     .5 .9557   .25      .00292 .00121 .00081       0 -.0002       0
Pb2  .2276 .0143 .3068      .00185 .00110 .00060  .00027 .00020 -.00007
Pb3  .2683 .2275 .0927      .00184 .00106 .00064 -.00015 .00033  .00000
Pb4  .0226 .1151 .1426      .00189 .00105 .00074  .00010 .00038  .00014
Pb5  .2498 .0527 .4821      .00252 .00227 .00070  .00022 .00036 -.00006
Sb1  .5067 .3328 .4740      .00170 .00030 .00063  .00018 .00033 -.00001
Sb2  .4841 .9420 .4245      .00143 .00028 .00069 -.00010 .00038  .00003
Sb3  .2232 .3230 .3793      .00176 .00021 .00052  .00022 .00037  .00029
Sb4  .4522 .2586 .3160      .00170 .00163 .00057  .00011 .00041 -.00018
S1       0 .8955   .25 1.49
S2   .3212 .4036 .3174 1.24
S3   .1106 .4969 .3698  .95
S4   .3675 .1145 .4013 1.12
S5   .3810 .5515 .4524 1.13
S6   .3714 .4421 .1020 1.34
S7   .1235 .3383 .1524 1.28
S8   .1112 .2221 .3033 1.16
S9   .3571 .1335 .2440 1.50
S10  .0958 .2129 .4557 1.35
S11  .3662 .1734 .0017 1.16