Alunite Schukow H, Breitinger D K, Zeiske T, Kubanek F, Mohr J, Schwab R G Zeitschrift fur Anorganische und Allgemeine Chemie 625 (1999) 1047-1050 Localization of hydrogen and content of oxonium cations in alunite via neutron diffraction Locality: synthetic Sample: T = 2 K _database_code_amcsd 0015817 6.943 6.943 17.227 90 90 120 R-3m atom x y z occ Biso K 0 0 0 .875 .57 Al .5 0 .5 .69 S 0 0 .30353 .38 Ohyd1 0 0 0 .125 .84 O2 0 0 .38667 .86 O3 .21911 -.21911 -.05952 .60 O4 .12501 -.12501 .14208 .57 D .19506 .19506 .11278 1.53