Anorthite Wenk H R, Joswig W, Tagai T, Korekawa M, Smith B K American Mineralogist 65 (1980) 81-95 The average structure of An 62-66 labradorite Note: studied with X-rays Locality: Sissone, Bergell Alps, Switzerland _database_code_amcsd 0019667 8.152 12.834 7.079 93.49 116.13 90.4 C-1 atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca1 .2665 .9835 .1692 .34 0.0043 .00790 0.0113 -.00240 0.00450 -.00620 Na1 .2665 .9835 .1692 .15 0.0043 .00790 0.0113 -.00240 0.00450 -.00620 Ca2 .2701 .0304 .0956 .34 0.0035 .00267 0.0070 0.00104 0.00130 -.00110 Na2 .2701 .0304 .0956 .15 0.0035 .00267 0.0070 0.00104 0.00130 -.00110 Si1 .00546 .16279 .21484 .585 0.0052 .00249 0.0040 -.00039 0.00190 0.00065 Al1 .00546 .16279 .21484 .415 0.0052 .00249 0.0040 -.00039 0.00190 0.00065 Si2 .00267 .81695 .23107 .585 0.0052 .00236 0.0035 0.00126 0.00184 0.00032 Al2 .00267 .81695 .23107 .415 0.0052 .00236 0.0035 0.00126 0.00184 0.00032 Si3 .68370 .10883 .31609 .585 0.0024 .00123 0.0024 0.00055 0.00070 -.00010 Al3 .68370 .10883 .31609 .415 0.0024 .00123 0.0024 0.00055 0.00070 -.00010 Si4 .68035 .87876 .35693 .585 0.0039 .00191 0.0046 0.00034 0.00136 0.00095 Al4 .68035 .87876 .35693 .415 0.0039 .00191 0.0046 0.00034 0.00136 0.00195 Oa1 .0012 .1274 .9783 0.0131 .00408 0.0050 0.00070 0.00560 0.00050 Oa2 .5777 .9918 .2765 0.0068 .00275 0.0063 0.00020 0.00250 0.00060 Obo .8100 .1031 .1851 0.0089 .00360 0.0143 -.00070 0.00580 -.00020 Obm .8140 .8539 .2410 0.0087 .00390 0.0234 0.00080 0.00650 -.00100 Oco .0141 .2893 .2821 0.0076 .00450 0.0102 -.00040 0.00340 0.00160 Ocm .0110 .6864 .2108 0.0084 .00403 0.0070 0.00190 0.00040 -.00140 Odo .1967 .1064 .3798 0.0089 .00328 0.0060 0.00000 0.00040 0.00010 Odm .1903 .8662 .4315 0.0095 .00410 0.0090 0.00150 -.00040 -.00070