Wherryite
Cooper M A, Hawthorne F C
The Canadian Mineralogist 32 (1994) 373-380
The crystal structure of wherryite, Pb7Cu2(SO4)4(SiO4)2(OH)2, a mixed
sulfate-silicate with [M(TO4)2] chains
Locality: Mammoth-St Anthony mine, Tiger, Pinal County, Arizona, USA
_database_code_amcsd 0005365
20.789 5.787 9.142 90 91.24 90 C2/m
atom     x    y      z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Pb1  .1434    0  .2632   .029   .026   .026      0   .004      0
Pb2  .4739    0  .7061   .028   .031   .021      0   .001      0
Pb3  .3419    0  .3212   .028   .036   .028      0  -.001      0
Pb4      0    0      0   .037   .028   .030      0  -.004      0
Cu     .25  .25      0   .025   .021   .022   .002   .003      0
S1   .2668    0  .6575   .027   .019   .017      0   .004      0
S2   .4318   .5  .3475   .021   .021   .020      0   .003      0
Si   .3960    0 -.0089   .028   .023   .026      0   .005      0
O1   .3192    0   .030   .027   .017   .038      0   .009      0
O2   .3356    0   .615   .041   .032   .032      0   .014      0
O3   .4173 .216  -.110   .032   .025   .015   .005   .005      0
O4   .2235    0   .531   .033   .040   .025      0  -.009      0
O5   .3850   .5   .222   .036   .044   .024      0  -.005      0
O6   .4351    0   .148   .043   .028   .026      0   .007      0
O7   .2576 .206  -.251   .038   .036   .019      0   .007  -.001
O8   .4236 .293   .438   .040   .062   .033  -.006  -.002   .009
O9   .5036   .5  -.285   .019   .054   .056      0   .003      0
O10  .3091   .5  -.029   .025   .030   .021      0  -.005      0