Zussmanite Lopes-Vieira A, Zussman J Mineralogical Magazine 37 (1969) 49-60 Further detail on the crystal structure of zussmanite Locality: Laytonville district, Mendocino County, California _database_code_amcsd 0014450 11.66 11.66 28.69 90 90 120 R-3 atom x y z occ Uiso K 1/3 2/3 1/6 .92 .0149 Na 1/3 2/3 1/6 .07 .0149 Fe1 0 0 0 .84 .0126 Mg1 0 0 0 .16 .0126 Fe2 .2294 -.0761 -.0009 .84 .0068 Mg2 .2294 -.0761 -.0009 .16 .0068 Fe3 .3840 .5387 .0035 .84 .0060 Mg3 .3840 .5387 .0035 .16 .0060 Si1 .2570 .3730 .0932 .0045 Si2 .4098 -.0403 .0935 .0049 Si3 .5246 .1797 .1670 5/6 .0051 Al .5246 .1797 .1670 1/6 .0051 O1 .4111 -.0253 .0375 .0103 O2 .2579 .3598 .0381 .0108 O3 .2661 -.1567 .1111 .0127 O4 .4008 .4893 .1114 .0099 O5 .2222 .2368 .1186 .0118 O6 .4452 .0951 .1192 .0130 O7 .5300 .3228 .1664 .0097 OH1 1/3 2/3 .0332 .0141 OH2 .1776 .0510 .0352 .0167 OH3 .4826 .2813 .0367 .0124