Pearceite
Bindi L, Evain M, Menchetti S
The Canadian Mineralogist 45 (2007) 321-333
Complex twinning, polytypism and disorder phenomena in the crystal structures
of antimonpearceite and arsenpolybasite
Locality: St. Joachimsthal, Bohemia, Czech Republic
Sample: 221
Note: mineral name has been changed from arsenpolybasite
Note: this is type pearceite-T2ac
_database_code_amcsd 0006141
14.9746 14.9746 11.9982 90 90 120 P321
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   .36371 .42908 .10401      .0389  .0413  .0360  .0419  .0213  .0095  .0013
Ag2   .09037 .42152 .13506 .813 .0500  .0301  .0439  .0561  .0035 -.0111  .0027
Cu2'   .0904  .4215  .1351 .187 .0500  .0301  .0439  .0561  .0035 -.0111  .0027
Ag3   .07803 .15006 .11754 .869 .0569  .0440  .0753  .0617  .0376  .0039  .0053
Cu3'    .078  .1501  .1175 .131 .0569  .0440  .0753  .0617  .0376  .0039  .0053
Ag4   .57112 .41821 .11501      .0506  .0427  .0389  .0534  .0079 -.0022  .0038
Ag5   .34634 .54688 .39198      .0446  .0425  .0531  .0407  .0259 -.0029 -.0121
Ag6   .26987 .06958 .39070      .0580  .0954  .0504  .0362  .0424 -.0137 -.0116
Ag7   .13407 .17634 .37296      .0574  .0787  .0273  .0490  .0137 -.0193 -.0020
Ag8   .52522 .16860 .37615      .0695  .1253  .0327  .0400  .0316 -.0082  .0020
Ag9   .10038 .42134 .39254      .0448  .0574  .0471  .0497  .0410 -.0171 -.0108
Ag10  .38282 .30734 .36580      .0875  .1442  .0266  .0342 -.0004  .0055  .0026
Cu1        0 .51201     .5      .0251  .0306  .0300  .0149  .0153 -.0011 -.0006
Cu2        0      0     .5      .0331  .0407  .0407  .0179  .0204      0      0
As1      1/3    2/3 .09980      .0204  .0218  .0218  .0175  .0109      0      0
As2   .33359 .16003 .09832      .0189  .0201  .0195  .0166  .0096  .0007 -.0001
S1     .2715  .5150  .1906      .0238  .0215  .0208  .0303  .0115  .0012 -.0026
S2   -.01023  .2402  .1981      .0264  .0157  .0278  .0301  .0068 -.0012  .0001
S3     .2618  .2468  .1777      .0266  .0281  .0273  .0305  .0184  .0010  .0001
S4     .4839  .2415  .1922      .0267  .0209  .0203  .0369  .0087 -.0037  .0021
S5     .4938 .50125 .32031      .0226  .0301  .0202  .0149  .0106  .0019 -.0006
S6         0      0  .3201      .0237  .0270  .0270  .0171  .0135      0      0
S7     .1953  .3430 .46279      .0274  .0335  .0264  .0256  .0175 -.0029 -.0016
S8       1/3    2/3  .5393      .0306  .0327  .0327   .026  .0163      0      0
S9     .5324  .5324      0      .0529  .0497  .0497  .0270   .001 -.0022  .0022
S10    .0248  .0248      0  1/3  .070   .060   .060   .036  -.010  -.025   .025