Rhomboclase Majzlan J, Navrotsky A, McCleskey R B, Alpers C N European Journal of Mineralogy 18 (2006) 175-186 Thermodynamic properties and crystal structure refinement of ferricopiapite, coquimbite, rhomboclase, and Fe2(SO4)3(H2O)5 Locality: synthetic _database_code_amcsd 0007142 9.7226 18.2800 5.4270 90 90 90 Pnma atom x y z occ Uiso Fe 0 0 0 .0296 S .2375 .0868 .2849 .0330 O1 .3264 .0217 .343 .0446 O2 .0932 .0557 .253 .0446 O3 .2881 .1203 .063 .0446 O4 .2269 .1329 .505 .0446 Wat5 .4884 .0869 .733 .75 .0446 OH35 .4884 .0869 .733 .25 .0446 Wat6 .6318 1/4 .550 .75 .0446 OH36 .6318 1/4 .550 .25 .0446 Wat7 .3916 1/4 .584 .671 .0446 OH37 .3916 1/4 .584 .224 .0446 Wat8 .428 1/4 .141 .079 .0446 OH38 .428 1/4 .141 .026 .0446