Margarite-2M1 Guggenheim S, Bailey S W American Mineralogist 60 (1975) 1023-1029 Refinement of the margarite structure in subgroup symmetry _database_code_amcsd 0000477 5.1038 8.8287 19.148 90 95.46 90 Cc atom x y z occ Biso Ca 0 .0932 .25 1.02 Si1 .4647 .9285 .1416 .5 .99 Si2 .5364 .0752 .8549 .5 .58 Si3 .4567 .2572 .1444 .5 .61 Si4 .5500 .7437 .8573 .5 .97 Al1 .4647 .9285 .1416 .5 .99 Al2 .5364 .0752 .8549 .5 .58 Al3 .4567 .2572 .1444 .5 .61 Al4 .5500 .7437 .8573 .5 .97 Al5 .7469 .9187 .9997 .73 Al6 .2510 .0863 .9998 .55 H1 .3970 .6370 .0830 .78 H2 .6030 .3630 .9170 .78 O1 .9600 .4436 .0512 1.00 O2 .0460 .5585 .9390 .50 O3 .3950 .2540 .0568 .90 O4 .6190 .7489 .9447 .70 O5 .3670 .0974 .1775 1.10 O6 .6410 .9167 .8226 .60 O7 .2660 .7784 .1665 .50 O8 .7110 .2140 .8304 1.10 O9 .2870 .3926 .1785 .40 O10 .7370 .6080 .8211 1.40 O11 .4480 .5693 .0488 .40 O12 .5430 .4417 .9468 1.00