Keyite
Cooper M A, Hawthorne F C
The Canadian Mineralogist 34 (1996) 623-630
The crystal structure of keyite, Cu3(Zn,Cu)4Cd2(AsO4)6(H2O)2, an oxysalt mineral
with essential cadmium
_database_code_amcsd 0005498
11.654 12.780 6.840 90 99.11 90 I2/a
atom     x     y     z occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Cu1    .75   .25   .25  .5        .0076  .0156  .0254  .0052  .0024 -.0083
Cu2    .25 .2402     0            .0048  .0068  .0279      0  .0000      0
Zn   .5246 .0928 .1583            .0055  .0049  .0234  .0001  .0019 -.0012
Cd     .75 .4964     0            .0038  .0093  .0274      0 -.0008      0
As1    .25 .0277     0            .0030  .0064  .0222      0  .0036      0
As2  .5057 .3638 .1414            .0034  .0034  .0204 -.0003  .0014 -.0013
O1    .975  .065  .147     .0102
O2    .570  .246  .188     .0134
O3    .350  .122  .090     .0145
O4    .931  .419  .041     .0118
O5    .708  .045  .184     .0151
O6    .362  .350  .063     .0122
Wat    .75  .268  .023     .0120