Margarite Guggenheim S, Bailey S W American Mineralogist 63 (1978) 186-187 Refinement of the margarite structure in subgroup symmetry: correction, further refinement, and comments _database_code_amcsd 0000615 5.104 8.829 19.148 90 95.5 90 Cc atom x y z occ Biso Ca 0 .0933 .25 .80 Al1 .7449 .9177 .9996 .53 Al2 .2488 .0858 -.0003 .44 Si1 .4623 .9264 .1422 .5 .46 Al1 .4623 .9264 .1422 .5 .46 Si2 .4544 .2567 .1445 .5 .22 Al2 .4544 .2567 .1445 .5 .22 Si11 .5336 .0739 .8551 .5 .59 Al11 .5336 .0739 .8551 .5 .59 Si22 .5467 .7440 .8576 .5 .89 Al22 .5467 .7440 .8576 .5 .89 O1 .962 .4445 .0527 .50 O2 .395 .2544 .0590 .50 OH1 .449 .5696 .0507 .40 O3 .366 .0974 .1781 .80 O4 .267 .7782 .1682 .60 O5 .289 .3924 .1788 .60 O11 .045 .5614 .9401 .60 O22 .618 .7502 .9468 .50 OH11 .543 .4396 .9482 .80 O33 .639 .9172 .8236 .50 O44 .712 .2149 .8323 .60 O55 .737 .6062 .8217 .70