Na.5H.5AlSi206 Muller G, Paulus H, Stiefel J Neues Jahrbuch fur Mineralogie, Monatshefte 1990 (1990) 493-503 Synthesis and structure of beta-quartz type Na0.5H0.5AlSi206 as compared to LiAlSi206 Note: stuffed beta-quartz type structure Sample: ref 2 _database_code_amcsd 0014848 5.150 5.150 5.458 90 90 120 P6_222 atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Na 0 0 0 .167 6.6 .082 .026 .143 .013 0 0 H 0 0 0 .167 6.6 .082 .026 .143 .013 0 0 Al .5 0 0 1/3 3.5 .060 .027 .049 .013 0 0 Si .5 0 0 2/3 3.5 .060 .027 .049 .013 0 0 O .2080 .4160 .5 5.3 .063 .123 .117 .061 .019 0