Hydronium jarosite Majzlan J, Stevens R, Boerio-Goates J, Woodfield B F, Navrotsky A, Burns P C, Crawford M K, Amos T G Physics and Chemistry of Minerals 31 (2004) 518-531 Thermodynamic properties, low-temperature heat-capacity anomalies, and single-crystal X-ray refinement of hydronium jarosite, (H3O)Fe3(SO4)2(OH)6 Note: Single-crystal X-ray diffraction refinement Locality: synthetic _database_code_amcsd 0008875 7.3559 7.3559 17.0186 90 90 120 R-3m atom x y z occ Uiso S 0 0 .3078 .012 Fe 1/6 -1/6 -1/6 .973 .013 O1 0 0 .3936 .018 O2 .2239 -.2239 -.0550 .018 O3 .1270 -.1270 .1351 .019 O4 0 0 0 .905 .032 H .1660 -.1660 .1160