Protochabourneite
Orlandi P, Biagioni C, Moelo Y, Bonaccorsi E, Paar W H
The Canadian Mineralogist 51 (2013) 475-494
Lead-antimony sulfosalts from Tuscany (Italy). XIII. Protochabourneite,
~Tl2Pb(Sb9-8As1-2)S10S17, from the Monte Arsiccio mine:
occurrence, crystal structure, and relationship with chabourneite
Locality: Monte Arsiccio mine, Apuan Alps, Tuscany, Italy
_database_code_amcsd 0020049
8.150 8.716 21.579 85.18 96.94 88.60 P-1
atom      x     y       z occ  Uiso
Tl1   .4657 .5978  .18388     .0702
Tl2   .4517 .0991  .18031 .70 .0700
Pb2   .4517 .0991  .18031 .30 .0700
Pb1   .0101 .0927  .27277     .0584
Sb1   .0357 .7790  .47663 .90 .0406
As1   .0357 .7790  .47663 .10 .0406
Sb2   .3007 .4803  .43880     .0367
Sb3   .6356 .7776  .37853     .0388
Sb4   .6852 .1085  .02106     .0380
Sb5   .3425 .0507  .42918     .0408
Sb6   .6621 .3067  .36511     .0404
Sb7   .1040 .3617  .11215     .0395
Sb8   .9473 .5906   .2696 .70 .0465
Pb8   .9909 .5962   .2798 .30 .0465
Sb9   .0263 .8617  .12617 .55 .0395
As9   .0263 .8617  .12617 .45 .0395
Sb10  .2952 .3704 -.00011 .65 .0380
As10  .2952 .3704 -.00011 .35 .0380
S1   -.1443 .5812   .4258     .0370
S2    .1300 .2526   .3984     .0345
S3   -.1328 .6411   .1571     .0404
S4    .1755 .8442   .3806     .0385
S5   -.1791 .9754   .4450     .0429
S6    .5576 .3328   .0663     .0390
S7    .4724 .1027   .3296     .0388
S8    .7524 .3587   .2590     .0428
S9    .1651 .1638   .0567     .0437
S10   .4475 .5196   .3411     .0350
S11  -.1500 .0649   .1515     .0379
S12   .1895 .5615   .0606     .0415
S13   .5401 .8907   .0700     .0388
S14   .5124 .3016   .4914     .0356
S15   .7414 .8113   .2770     .0413
S16   .1832 .3322   .2120     .0406
S17   .2029 .8470   .2215     .0539