Stellerite
Sacerdoti M, Gomedi I
Bulletin de Mineralogie 107 (1984) 799-804
Crystal structural refinement of Ca-exchanged barrerite
Note: made from natural barrierite in the lab
Locality: Capo Pula, Sardegna, Italy
_database_code_amcsd 0012083
13.610 18.214 17.833 90 90 90 Fmmm
atom     x     y     z  occ Uiso
Ca      .5     0 .2908  .92 .054
Si1  .3861 .3071 .3768 .764 .019
Al1  .3861 .3071 .3768 .236 .019
Si3  .3018 .4113    .5 .764 .019
Al3  .3018 .4113    .5 .236 .019
Si4  .3886 .1832    .5 .764 .017
Al4  .3886 .1832    .5 .236 .017
Si5    .25   .25   .25 .764 .022
Al5    .25   .25   .25 .236 .022
O1   .3181 .3036 .3008      .039
O3   .3714 .2319 .4253      .038
O4   .3569 .3803 .4240      .041
O7      .5 .3154 .3483      .034
O8   .3145 .1129    .5      .036
O9   .3059    .5    .5      .037
O10     .5 .1501    .5      .031
Wat1 .3722 .0884 .3129  .54 .241
Wat2    .5 .1279 .2367  .92 .127
Wat3 .4542     0 .4230  .57 .117
Wat4 .3673     0 .3781  .26 .102
Wat5 .4233    .5 .3336  .32 .065
Wat6 .3655    .5 .3101  .56 .126
Wat7 .3052 .0546 .2859  .31 .188
Wat8    .5    .5 .3463  .39 .083