Natrojarosite Basciano L C, Peterson R C American Mineralogist 93 (2008) 853-862 Crystal chemistry of the natrojarosite-jarosite and natrojarosite-hydronium jarosite solid-solution: A synthetic study with full Fe site occupancy Locality: synthetic Sample: Q _database_code_amcsd 0004577 7.31984 7.31984 16.6474 90 90 120 R-3m atom x y z occ Biso Na 0 0 0 .87 3.0 H3O 0 0 0 .13 3.0 Fe .166667 -.166667 -.16667 1.43 S 0 0 .3117 1.16 O1 0 0 .4012 1.0 O2 .2222 -.2222 -.0510 1.3 O3 .1252 -.1252 .1304 .64 H .1671 -.1671 .164 2