Jarosite
Mills S J, Nestola F, Kahlenberg V, Christy A G, Hejny C, Redhammer G J
American Mineralogist 98 (2013) 1966-1971
Looking for jarosite on Mars: The low-temperature crystal structure of jarosite
Note: T = 173 K
Locality: Jaroso Ravine, Sierra Almagrera, Andalusia, Almeria, Spain
_database_code_amcsd 0020097
7.2918 7.2918 17.1026 90 90 120 R-3m
atom      x       y       z occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2)  U(1,3)  U(2,3)
K         0       0       0     .0097  .0106  .0106  .0079  .0053       0       0
Fe       .5       0      .5 .93 .0031  .0014  .0004  .0072 .00021 -.00001 -.00001
Al       .5       0      .5 .07 .0031  .0014  .0004  .0072 .00021 -.00001 -.00001
S         0       0  .30903     .0052  .0040  .0040  .0076 .00200       0       0
O1        0       0  .60547     .0089  .0085  .0085  .0098  .0043       0       0
O2   .22269 -.22269 -.05367     .0080  .0083  .0083  .0105  .0065  -.0002   .0002
O3   .12696 -.12696  .13533     .0073  .0041  .0041  .0133  .0017   .0012  -.0012
H1     .189   -.189    .113      .036