Sursassite Nagashima M, Akasaka M, Minakawa T, Libowitzky E, Armbruster T American Mineralogist 94 (2009) 1440-1449 Sursassite: hydrogen bonding, cation order, and pumpellyite intergrowth Locality: Falotta, Switzerland Sample Number: 1 _database_code_amcsd 0004986 8.7201 5.8053 9.8075 90 109.011 90 P2_1/m atom x y z occ Mn1 .16884 .25 .31355 Mn2 .27223 .25 .67531 Al1 .5 0 .5 Al2 .5 0 0 Al3 0 .5 0 Si1 .30787 .75 .19109 Si2 .20691 .75 .80740 Si3 .15557 .75 .49480 O1 .2608 .5139 .5013 O2 .1916 .5248 .1631 O3 .3146 .5180 .8332 O4 .4148 .75 .0810 O5 .4491 .75 .3517 O6 .0844 .25 .9289 O7 .4379 .25 .3690 O8 .0718 .75 .8926 O9 .0902 .75 .6360 O10 -.0103 .75 .3573 O11 .4114 .25 .0713 H6A .05 .25 .8235 .5 H6B .203 .25 .952 .5 H7 .454 .25 .275 H11A .294 .25 .052 .5 H11B .40 .254 .168 .25