Barylite Rastsvetaeva R K, Chukanov N V Doklady Akademii Nauk 388 (2003) 205-207 Crystal structure and microtwinning of a new mineral clinobarylite, BaBe2Si2O7 Note: polytype barylite-1O _database_code_amcsd 0019239 11.618 4.904 4.655 89.94 90 90 Pm atom x y z Biso Ba1 0 .4649 0 1.48 Ba2 .5 .0588 .4994 1.22 Be1 .249 .086 .014 .8 Be2 .250 .419 .519 1.5 Si1 .3713 .5866 .0244 .91 Si2 .1277 .9361 .5207 1.05 O1 .3631 .903 -.046 .7 O2 .5 .487 .086 1.25 O3 0 .045 .579 1.8 O4 .1398 .609 .453 1.2 O5 .2234 .126 .360 .6 O6 .1336 -.005 -.136 .9 O7 .2772 .397 -.141 1.5 O8 .3684 .533 .363 1.3