Astrophyllite Sokolova E, Camara F European Journal of Mineralogy 20 (2008) 253-260 Re-investigation of the crystal structure of magnesium astrophyllite Locality: Mt. Yukspor, Khibina alkaline massif, Kola Peninsula, Russia _database_code_amcsd 0007257 5.3327 23.1535 10.3775 90 99.615 90 C2/m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) KA .5 .13847 .5 .98 .0267 .0307 .0268 .0226 0 .0045 0 BaA .5 .13847 .5 .005 .0267 .0307 .0268 .0226 0 .0045 0 NaB 0 0 .5 .65 .0103 .0136 .0099 .0064 0 -.0015 0 CaB 0 0 .5 .14 .0103 .0136 .0099 .0064 0 -.0015 0 NaM1 0 0 0 .0129 .0079 .0127 .0175 0 .0005 0 FeM2 .5 .07440 0 .625 .0093 .0052 .0100 .0125 0 .0009 0 MnM2 .5 .07440 0 .375 .0093 .0052 .0100 .0125 0 .0009 0 FeM3 0 .14505 0 .60 .0091 .0057 .0097 .0120 0 .0022 0 MgM3 0 .14505 0 .40 .0091 .0057 .0097 .0120 0 .0022 0 MgM4 .5 .21399 0 .625 .0098 .0061 .0106 .0128 0 .0019 0 FeM4 .5 .21399 0 .375 .0098 .0061 .0106 .0128 0 .0019 0 TiD .43702 0 .28713 .985 .0064 .0024 .0079 .0091 0 .0019 0 NbD .43702 0 .28713 .015 .0064 .0024 .0079 .0091 0 .0019 0 SiT1 .07901 .21773 .73587 .0073 .0048 .0081 .0092 .0000 .0015 -.0002 SiT2 .07573 .08555 .72932 .0076 .0052 .0080 .0099 -.0003 .0017 -.0002 O1 .4035 0 .1178 .0107 .0082 .0137 .0103 0 .0024 0 O2 .1393 .08202 .8868 .0109 .0094 .0134 .0098 .0002 .0015 -.0002 O3 .2982 .05764 .6609 .0152 .0122 .0200 .0140 .0079 .0045 .0024 O4 .1966 .05755 .3287 .0170 .0115 .0227 .0162 .0090 .0006 -.0033 O5 .0537 .15325 .6769 .0161 .0252 .0091 .0132 -.0001 .0013 -.0001 O6 .1298 .21770 .8930 .0096 .0069 .0122 .0100 .0008 .0018 -.0005 O7 .8141 .74859 .6781 .0139 .0094 .0201 .0126 -.0055 .0031 -.0002 Oh8 .3656 .14762 .1030 .0115 .0094 .0133 .0115 -.0006 .0013 .0004 H .386 .142 .191 .0138 F .5 0 .5 .17 .009