Polybasite Bindi L, Menchetti S American Mineralogist 94 (2009) 151-155 Adding further complexity to the polybasite structure: The role of Ag in the B layer of the -M2a2b2c polytype Locality: Gowganda, Timiskaming District, Ontario, Canada _database_code_amcsd 0004814 26.2625 15.1623 24.1061 90 90.045 90 C2/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ag1 .03327 .14640 .05460 .0383 .0327 .0311 .0511 -.0065 -.0123 .0081 Ag2 .04445 .36054 .06736 .0550 .0274 .0634 .0743 -.0031 -.0097 .0071 Ag3 .04223 .63232 .06985 .0645 .0484 .0687 .076 -.0276 -.0101 .0311 Ag4 .03034 .86010 .05625 .0554 .0513 .0525 .0624 .0041 -.0018 -.0060 Ag5 .16433 .00350 .07374 .0525 .0753 .0280 .0542 -.0011 .0293 -.0023 Ag6 .18503 .50161 .05040 .0384 .0372 .0391 .0390 -.0040 .0112 .0030 Ag7 .28760 .10213 .05265 .0489 .0515 .0478 .0475 -.0004 .0029 -.0067 Ag8 .28421 .37824 .06417 .0405 .0362 .0360 .0494 -.0077 .0002 .0014 Ag9 .28850 .62833 .06437 .0640 .0640 .0559 .072 .0245 -.0021 -.0133 Ag10 .28749 .89934 .05738 .0343 .0236 .0278 .0513 -.0063 -.0092 .0101 Ag11 .43058 .25118 .05742 .0497 .0413 .0409 .067 -.0061 .0016 .0033 Ag12 .41698 .74589 .06314 .0674 .109 .0323 .061 -.0095 .0169 .0098 Ag13 .16001 .00609 .19907 .0515 .0268 .0743 .0535 .0005 .0036 -.0153 Ag14 .34452 .0312 .18207 .1040 .0408 .223 .0485 -.0255 -.0032 .006 Ag15 .46082 .0105 .19473 .0641 .0568 .092 .0437 .0092 .0127 .0015 Ag16 .09767 .19270 .19874 .0614 .0560 .0755 .0528 .0193 -.0144 -.0256 Ag17 .22634 .17236 .19506 .0515 .0667 .0464 .0415 .0057 .0154 -.0053 Ag18 .41210 .2091 .18771 .0686 .0318 .115 .0588 .0029 .0036 .0330 Ag19 .05189 .37802 .19629 .0455 .0620 .0216 .0528 -.0164 -.0211 .0031 Ag20 .17386 .37652 .19196 .0514 .0617 .0601 .0323 .0090 .0071 .0135 Ag21 .29023 .36011 .19436 .0546 .0685 .0437 .0515 .0244 .0083 .0178 Ag22 .40168 .4163 .19268 .0692 .0766 .092 .0393 -.0418 -.0024 -.0208 Ag23 .06027 .63451 .19421 .0734 .0875 .0481 .085 .0251 -.0434 -.0158 Ag24 .1883 .6293 .18616 .0803 .129 .0776 .0338 .0762 -.0018 -.0053 Ag25 .31375 .60684 .19060 .0904 .149 .0889 .0331 -.0899 .0244 -.0138 Ag26 .46793 .59306 .18465 .0878 .169 .0526 .0416 -.0535 -.0044 .0075 Ag27 .02228 .90307 .18651 .0703 .0938 .0523 .0649 -.0405 .0328 -.0274 Ag28 .13263 .80886 .19465 .0755 .137 .0508 .0382 .0065 -.0199 .0105 Ag29 .2613 .8440 .1924 .1089 .212 .0628 .0515 .073 -.035 -.0144 Ag30 .41349 .8008 .18820 .0677 .0378 .128 .0370 .0107 -.0019 .0083 Sb1 .16697 .24560 .04547 .0255 Sb2 .16603 .75682 .04761 .940 .0248 As2 .16603 .75682 .04761 .060 .0248 Sb3 .42090 -.00620 .04553 .887 .0211 As3 .42090 -.00620 .04553 .113 .0211 Sb4 .41117 .50116 .04664 .970 .0230 As4 .41117 .50116 .04664 .030 .0230 Cu1 0 .2422 .25 .0258 .027 .040 .0106 0 .003 0 Cu2 0 .7547 .25 .057 .083 .048 .041 0 .005 0 Ag31 .24397 .50475 .24931 .0247 .0361 .0259 .0121 .0024 -.0038 .0013 S1 .1190 .1408 .0977 .0284 S2 .1341 .3762 .0927 .0259 S3 .2463 .2349 .0964 .0222 S4 .1351 .6280 .0930 .0234 S5 .11961 .8635 .1033 .0210 S6 .2454 .7580 .0969 .0246 S7 .4974 -.0055 .1036 .0251 S8 .3777 .1178 .0885 .0233 S9 .3794 .3746 .0957 .0264 S10 .49517 .5019 .0873 .0265 S11 .37779 .6152 .1086 .0179 S12 .3747 .8860 .0984 .0234 S13 .22953 -.0051 -.0002 .0308 S14 .4906 .7734 .0009 .0470 S15 .0743 .0162 .2328 .0280 S16 .2478 .0036 .1527 .0274 S17 .0024 .2555 .1610 .0205 S18 .3287 .2261 .2314 .0301 S19 .1004 .5042 .2324 .0296 S20 .24750 .4936 .1498 .0232 S21 .0006 .7404 .1610 .0353 S22 .3318 .7536 .23534 .0214