Marialite Antao S M, Hassan I The Canadian Mineralogist 49 (2011) 581-586 Complete Al-Si order in scapolite Me37.5, ideally Ca3Na5[Al8Si16O48]Cl(CO3), and implications for antiphase domain boundaries (APBs) Locality: Lake Clear, Ontario, Canada _database_code_amcsd 0018479 12.07899 12.07899 7.583467 90 90 90 *P4_2/n .25 .25 .25 atom x y z occ Uiso ClA .75 .75 .75 .550 .0571 SA .75 .75 .75 .040 .0571 CA .75 .75 .75 .409 .0571 FeM .61414 .53529 .7632 .003 .0201 SrM .61414 .53529 .7632 .004 .0201 CaM .61414 .53529 .7632 .338 .0201 NaM .61414 .53529 .7632 .547 .0201 KM .61414 .53529 .7632 .040 .0201 Si1 .58983 .65957 .2485 .0077 Al2 .9101 .1659 .0494 .0089 Si3 .66266 .0855 .9616 .0089 O1 .7085 .5997 .2516 .0178 O2 .9437 .1251 .2641 .0178 O3 .6013 .1901 .0431 .0221 O4 .7945 .0989 .9658 .0182 O5 .5202 .6174 .0785 .0209 O6 .6245 .9784 .0725 .0234 O7C .8452 .7950 .8002 .347 .0571