Jarosite Scarlett N V Y, Grey I E, Brand H E A American Mineralogist 95 (2010) 1590-1593 Ordering of iron vacancies in monoclinic jarosites Locality: synthetic Note: T = 95 C _database_code_amcsd 0017748 12.74852 7.34697 6.98243 90 127.1974 90 C2/m atom x y z occ Biso Na 0 0 0 .75 1.08 H3O 0 0 0 .25 1.08 Fe1 0 0 .5 .856 1.08 Fe2 .75 .25 .5 1.08 S .3066 0 .9329 1.08 O1 .4091 0 .198 1.13 O2 .1679 0 .829 1.13 O3 .3423 .1656 .8460 1.13 OH4 .2603 0 .400 .92 1.13 Wat4 .2603 0 .400 .08 1.13 OH5 .0743 .2023 .3943 .92 1.13 Wat5 .0743 .2023 .3943 .08 1.13