Marialite Papike J J, Zoltai T American Mineralogist 50 (1965) 641-655 The crystal structure of a marialite scapolite _database_code_amcsd 0000134 12.060 12.060 7.572 90 90 90 I4/m atom x y z occ Biso Na .1340 .2113 0 .79 2.65 Ca .1340 .2113 0 .19 2.65 K .1340 .2113 0 .02 2.65 Si1 .3388 .4104 0 .82 Si2 .3374 .0851 .2060 .55 .76 Al2 .3374 .0851 .2060 .46 .76 O1 .4587 .3483 0 1.60 O2 .3066 .1206 0 2.14 O3 .0517 .3500 .2148 1.55 O4 .2293 .1289 .3281 1.37 Cl 0 0 0 .95