Nosean Gesing T M, Buhl J-C European Journal of Mineralogy 10 (1998) 71-77 Crystal structure of a carbonate-nosean Na8[AlSiO4]6CO3 _database_code_amcsd 0006707 9.001 9.001 9.001 90 90 90 P23 atom x y z occ Biso Na1 .185 .185 .185 1.2 Na2 .729 .729 .729 6.8 Al .241 .5 0 .3 Si .259 0 .5 .5 C 0 0 0 1.3 O1 .135 .450 .154 1.2 O2 .648 .949 .644 1.2 O3 .913 .099 .065 1/6 1.3 O4 .133 0 0 1/6 1.3