Plancheite
Evans H T, Mrose M E
American Mineralogist 62 (1977) 491-502
The crystal chemistry of the hydrous copper silicates, shattuckite and
plancheite
Note: sample is from Rioja, Argentina
_database_code_amcsd 0000579
19.043 20.129 5.269 90 90 90 Pcnb
atom      x     y    z Biso
Cu1   .4592 .0100 .269  .14
Cu2   .3746 .0329 .791  .14
Cu3   .2925 .0563 .317  .14
Cu4   .2518 .3085 .713  .19
Si1   .6408 .1071 .941  .12
Si2   .5635 .1239 .422  .12
Si3   .4073 .1637 .505  .12
Si4   .3323 .1873 .997  .12
O1     .629  .028 .942  .14
O2     .545  .047 .496  .11
O3     .382  .087 .504  .13
O4     .302  .112 .955  .12
O5     .724  .126 .940  .17
O6     .599  .144 .173  .10
O7     .620  .140 .665  .08
O8     .493  .165 .485  .10
O9     .386  .195 .769  .08
O10    .373  .204 .268  .14
O11    .272  .246 .985  .11
OH12   .462  .062 .981  .15
OH13   .287  .005 .581  .16
Wat14    .5   .25 .950  .20