Paracelsian
Smith J V
Acta Crystallographica 6 (1953) 613-620
The crystal structure of paracelsian, BaAl2Si2O8
Locality: Benallt Mine, near Rhiw, Carnarvonshire, U.K.
_database_code_amcsd 0009156
9.076 9.583 8.578 90 90 90 Pnam
atom     x     y     z occ
Ba   .8973 .4123   .25
Al1   .065 .1961 .9354  .5
Si1   .065 .1961 .9354  .5
Al2  .2283 .9173 .9337  .5
Si2  .2283 .9173 .9337  .5
O1    .193 .0883  .998
O2   .1287  .362  .954
O3    .925 .1875 .0646
O4   .0067  .173   .75
O5    .291  .912   .75