Albite Harlow G E American Mineralogist 67 (1982) 975-996 The anorthoclase structures: The effects of temperature and composition Note: Or = 32.5, T = 400 C Locality: Grande Calderira, Azores _database_code_amcsd 0019653 8.3482 12.9800 7.1582 90 116.109 90 C2/m atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Na .2796 0 .1366 .686 0.0095 0.0107 0.0334 0 0.0087 0 K .2796 0 .1366 .334 0.0095 0.0107 0.0334 0 0.0087 0 Ca .2796 0 .1366 .008 0.0095 0.0107 0.0334 0 0.0087 0 Al1 .0091 .1797 .2238 .25 0.0135 0.0031 0.0106 -.0008 0.0076 -.0002 Si1 .0091 .1797 .2238 .750 0.0135 0.0031 0.0106 -.0008 0.0076 -.0002 Al2 .6985 .1167 .3431 .25 0.0132 0.0025 0.0124 -.0002 0.0075 -.0001 Si2 .6985 .1167 .3431 .750 0.0132 0.0025 0.0124 -.0002 0.0075 -.0001 O1 0 .1408 0 0.0240 0.0049 0.0098 0 0.0096 0 O2 .6157 0 .2884 0.0190 0.0032 0.0194 0 0.0089 0 O3 .8242 .1373 .2236 0.0182 0.0064 0.0290 -.0006 0.0159 0.0011 O4 .0275 .3078 .2544 0.0187 0.0037 0.0280 -.0012 0.0136 -.0014 O5 .1883 .1248 .4087 0.0190 0.0045 0.0209 0.0015 0.0082 0.0016