Witzkeite
Nestola F, Camara F, Chukanov N V, Atencio D,
Coutinho J M V, Contreira R R, Farber G
American Mineralogist 97 (2012) 1783-1787
Witzkeite: A new rare nitrate-sulphate mineral
from a guano deposit at Punta de Lobos, Chile
Locality: Punta de Lobos, Chile
_database_code_amcsd 0019473
24.902 5.3323 17.246 90 94.281 90 C2/c
atom      x       y       z occ  Uiso
Na1  .41977  .24195  .07588     .0214
Na2  .50009 -.26669  .08618     .0241
K1   .15202  .25031  .10623     .0247
K2   .32417  .24292  .23240     .0275
Ca       .5   .1735     .25     .0163
Fe       .5    .333     .25 .05 .0152
S1   .56605 -.75113  .07266     .0153
S2   .41680 -.27020  .22437     .0157
N1   .75732   .2462  .12315     .0323
O1   .43161   .4724  .20028     .0258
O2   .35931  -.2587  .23440     .0226
O3   .43758  -.0133 -.02829     .0239
O4   .43613   .5377 -.01849     .0227
O5   .55222  -.2044  .20292     .0238
O6   .38488   .2567  .37627     .0250
O7   .51776   .2672  .11856     .0210
O8   .43192  -.0888  .16526     .0259
O9   .25780   .0436  .34995     .0413
O10  .25789   .4491  .34928     .0417
O11  .78891   .2472  .07049     .0504
Ow   .32731   .2459  .05085     .0383
H1    .3102    .377    .059      .037
H2     .308    .134    .060       .07