Bartelkeite
Origlieri M J, Yang H, Downs R T, Posner E S, Domanik K J, Pinch W W
American Mineralogist 97 (2012) 1812-1815
The crystal structure of bartelkeite, with a revised chemical formula,
PbFeGeVI(GeIV2O7)(OH)2*H2O, isotypic with high-pressure P21/m lawsonite
Locality: Tsumeb, Namibia
_database_code_amcsd 0019471
5.8279 13.6150 6.3097 90 127.314 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)
Pb   .32486    .75 .67674 .01488 .01415 .01555 .01618       0 .00984       0
Fe       .5      0      0 .00769 .00820 .00870 .00662 -.00161 .00473 -.00110
Ge1      .5      0     .5 .00773 .00759 .01004 .00554  .00282 .00397  .00176
Ge2  .96137 .12998 .99604 .00688 .00581 .00720 .00654  .00054 .00318  .00011
O1   .90129    .75 .93503 .01573 .01053 .00637 .02662       0 .00935       0
O2   .75120 .11152 .65453 .01284 .01201 .01457 .00844 -.00314 .00437 -.00011
O3   .78204 .38528 .13370 .01144 .01291 .01169 .01320  .00402 .00972  .00415
O4   .28375 .06250 .16104 .00884 .00831 .01187 .00631  .00528 .00441  .00316
O5H  .28929 .05245 .60363 .01156 .00871 .01797 .00741  .00372 .00457  .00174
O6W  .76173    .75 .32159 .02397 .02783 .01227 .03305       0 .01910       0
H1   .14279 .07756 .49540    .03
H2   .71283 .79771 .35539    .03