Ammoniojarosite Basciano L C, Peterson R C Mineralogical Magazine 71 (2007) 427-441 The crystal structure of ammoniojarosite, (NH4)Fe3(SO4)2(OH)6 and the crystal chemistry of the ammoniojarosite-hydronium jarosite solid-solution series Locality: Synthetic _database_code_amcsd 0014580 7.3177 7.3177 17.534 90 90 120 R-3m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) N 0 0 0 .010 .012 .012 .007 .006 0 0 Fe 1/6 -1/6 -1/6 .006 .005 .005 .008 .003 0 0 S 0 0 .3059 .006 .006 .006 .006 .003 0 0 O1 0 0 .3891 .009 .011 .011 .007 .005 0 0 O2 .2231 -.2231 -.0564 .009 .011 .011 .009 .008 0 0 O3 .1277 -.1277 .1371 .008 .006 .006 .011 .003 .001 .001 H1 .176 -.176 -.118 .5 .027 H2 .059 .119 .018 .5 .027 H3 0 0 -.047 .5 .027