Silvialite
Teertstra D K, Schindler M, Sherriff B L, Hawthorne F C
Mineralogical Magazine 63 (1999) 321-329
Silvialite, a new sulfate-dominant member of the scapolite group with
an Al-Si composition near the I4/m-P42/n phase transition
Locality: McBride Province, Australia
_database_code_amcsd 0014537
12.160 12.160 7.560 90 90 90 I4/m
atom      x       y      z  occ  Uiso
Na   .35868  .28328      0 .387 .0218
Ca   .35868  .28328      0 .613 .0218
Al1  .16079  .09174      0 .406 .0085
Si1  .16079  .09174      0 .594 .0085
Al2  .16030  .41297 .20683 .406 .0096
Si2  .16030  .41297 .20683 .594 .0096
S        .5      .5      0 .522 .0165
C        .5      .5      0 .478 .0165
O1   .04213   .1518      0      .0187
O2    .1870   .3730      0      .0174
O3    .4495   .1505  .2068      .0212
O4    .2666   .3655  .6724      .0272
O5    .4008   .4815   .107 .261  .031
O6     .605    .511      0 .359  .079