Rasvumite
Clark J R, Brown G E
American Mineralogist 65 (1980) 477-482
Crystal structure of rasvumite, KFe2S3
_database_code_amcsd 0000782
9.049 11.019 5.431 90 90 90 Cmcm
atom     x     y   z Biso
K       .5 .1699 .25 2.33
Fe   .3502    .5   0 1.18
S1      .5 .6191 .25 1.16
S2   .2174 .3859 .25 1.74