Georgerobinsonite
Cooper M A, Ball N A, Hawthorne F C, Paar W H, Roberts A C, Moffatt E
The Canadian Mineralogist 49 (2011) 865-876
Georgerobinsonite, Pb4(CrO4)2(OH)2FCl, a new chromate mineral from the
Mammoth-St. Anthony mine, Tiger, Pinal County, Arizona: description and crystal structure
Locality: Mammoth-St. Anthony mine, Tiger, Pinal County, Arizona, USA
_database_code_amcsd 0018387
7.6256 11.6081 6.8961 90 90 90 *Pmmn
.25 .25 0
atom       x      y      z occ   Uiso U(1,1) U(2,2) U(3,3) U(1,2)  U(1,3) U(2,3)
Pb(1)    .25 .59690 .12642     .02183  .0256  .0233  .0166      0       0 -.0031
Pb(2) .50242    .25 .41670     .02025  .0147  .0239  .0221      0 -.00089      0
Cr       .25 .49812  .6485      .0129  .0134  .0135  .0117      0       0 -.0015
Cl       .25  .2284  .0720  .5  .0217
F        .75    .25  .1327       .027   .035   .034   .011      0       0      0
O(1)   .4226  .5121  .7804      .0264   .023   .033   .023   .006   -.003  -.006
O(2)     .25  .6070  .4931      .0232   .028   .021   .021      0       0  -.000
O(3)     .25  .3763  .5289      .0235   .023   .016   .032      0       0  -.003
Oh4    .4388    .75  .2306      .0166   .014   .019   .016      0   -.001      0
H       .550    .75   .159        .02