COL ICSD Collection Code 34916 DATE Recorded Jan 1, 1980; updated Apr 22, 1996 NAME Sodium calcium tecto-alumosilicate * MINR Albite calcian low - from Mitchell County, North Carolina MINR Plagioclase An28 MINR Feldspar FORM (Na0.75 Ca0.25) (Al1.26 Si2.74 O8) = Al1.26 Ca.25 Na.75 O8 Si2.74 TITL The crystal structures of two oligoclases: A comparison with low and high albite REF Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977) ZEKGA 133 (1971) 43-65 AUT Phillips M W, ColvilleÿAÿA, RibbeÿPÿH CELL a=8.169 b=12.851 c=7.124 à=93.6 á=116.4 ç=89.5 V=668.4 Z=4 SGR C -1 (2) - triclinic CLAS -1 (Hermann-Mauguin) - Ci (Schoenflies) PRS aC52 ANX ABC3X8 PARM Atom__No OxStat Wyck ---X--- ---Y--- ---Z--- -SOF- Na 1 1.000 4i 0.2689 0.004 0.1331 0.75 Ca 1 2.000 4i 0.2689 0.004 0.1331 0.25 Al 1 3.000 4i 0.0078 0.1658 0.2124 0.63 Si 1 4.000 4i 0.0078 0.1658 0.2124 0.37 Al 2 3.000 4i 0.0035 0.8178 0.2328 0.22 Si 2 4.000 4i 0.0035 0.8178 0.2328 0.78 Al 3 3.000 4i 0.6882 0.1095 0.3169 0.21 Si 3 4.000 4i 0.6882 0.1095 0.3169 0.79 Al 4 3.000 4i 0.6824 0.8796 0.3574 0.22 Si 4 4.000 4i 0.6824 0.8796 0.3574 0.78 O 1 -2.000 4i 0.0049 0.1304 0.9766 O 2 -2.000 4i 0.5871 0.9938 0.2789 O 3 -2.000 4i 0.8135 0.1072 0.1903 O 4 -2.000 4i 0.8189 0.8511 0.2507 O 5 -2.000 4i 0.0148 0.2949 0.2771 O 6 -2.000 4i 0.0188 0.6902 0.2187 O 7 -2.000 4i 0.2007 0.1091 0.3866 O 8 -2.000 4i 0.1878 0.867 0.432 WYCK i13 ÿ TF Atom á(1,1) á(2,2) á(3,3) á(1,2) á(1,3) á(2,3) Na 1 0.0060 0.0189 0.0374 0.0011 0.0010 -0.0219 Ca 1 0.0060 0.0189 0.0374 0.0011 0.0010 -0.0219 Al 1 0.0053 0.0017 0.0051 -0.0005 0.0023 0.0003 Si 1 0.0053 0.0017 0.0051 -0.0005 0.0023 0.0003 Al 2 0.0044 0.0016 0.0042 0.0005 0.0015 0.0004 Si 2 0.0044 0.0016 0.0042 0.0005 0.0015 0.0004 Al 3 0.0039 0.0012 0.0051 0.0000 0.0016 0.0004 Si 3 0.0039 0.0012 0.0051 0.0000 0.0016 0.0004 Al 4 0.0038 0.0013 0.0053 0.0001 0.0019 0.0003 Si 4 0.0038 0.0013 0.0053 0.0001 0.0019 0.0003 O 1 0.0110 0.0030 0.0079 0.0006 0.0044 0.0011 O 2 0.0050 0.0015 0.0078 -0.0004 0.0025 0.0010 O 3 0.0080 0.0024 0.0104 -0.0009 0.0045 0.0002 O 4 0.0094 0.0031 0.0169 0.0006 0.0073 0.0007 O 5 0.0074 0.0023 0.0102 -0.0007 0.0025 0.0004 O 6 0.0075 0.0025 0.0080 0.0015 0.0017 -0.0001 O 7 0.0058 0.0024 0.0073 0.0005 0.0019 0.0004 O 8 0.0071 0.0030 0.0073 -0.0006 0.0088 -0.0008 REM XDP (X-ray diffraction from a powder) REM M PDF 41-1480 REM M av.T-O: 1.700, 1.637, 1.638, 1.639 RVAL 0.093 COL ICSD Collection Code 34917 DATE Recorded Jan 1, 1980; updated Apr 22, 1996 NAME Sodium calcium tecto-alumosilicate * MINR Albite calcian low - from Camedo, Switzerland MINR Plagioclase An16 MINR Feldspar FORM (Na0.84 Ca0.16) Al1.16 Si2.84 O8 = Al1.16 Ca.16 Na.84 O8 Si2.84 TITL The crystal structures of two oligoclases: A comparison with low and high albite REF Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik, Kristallchemie (-144,1977) ZEKGA 133 (1971) 43-65 AUT Phillips M W, ColvilleÿAÿA, RibbeÿPÿH CELL a=8.155 b=12.821 c=7.140 à=94.0 á=116.5 ç=88.6 V=666.6 Z=4 SGR C -1 (2) - triclinic CLAS -1 (Hermann-Mauguin) - Ci (Schoenflies) PRS aC52 ANX ABC3X8 PARM Atom__No OxStat Wyck ---X--- ---Y--- ---Z--- -SOF- Na 1 1.000 4i 0.2685 0.9949 0.1423 0.84 Ca 1 2.000 4i 0.2685 0.9949 0.1423 0.16 Al 1 3.000 4i 0.0079 0.1673 0.2104 0.74 Si 1 4.000 4i 0.0079 0.1673 0.2104 0.26 Al 2 3.000 4i 0.0035 0.8189 0.2347 0.11 Si 2 4.000 4i 0.0035 0.8189 0.2347 0.89 Al 3 3.000 4i 0.6902 0.1099 0.316 0.16 Si 3 4.000 4i 0.6902 0.1099 0.316 0.84 Al 4 3.000 4i 0.6823 0.8806 0.3589 0.16 Si 4 4.000 4i 0.6823 0.8806 0.3589 0.84 O 1 -2.000 4i 0.0052 0.1312 0.9716 O 2 -2.000 4i 0.5891 0.9954 0.2797 O 3 -2.000 4i 0.8125 0.109 0.19 O 4 -2.000 4i 0.819 0.8513 0.2532 O 5 -2.000 4i 0.0143 0.2983 0.274 O 6 -2.000 4i 0.0209 0.6916 0.2246 O 7 -2.000 4i 0.2032 0.1092 0.3871 O 8 -2.000 4i 0.1854 0.8673 0.4334 WYCK i13 ÿ TF Atom á(1,1) á(2,2) á(3,3) á(1,2) á(1,3) á(2,3) Na 1 0.0082 0.0138 0.0296 0.0004 0.0033 -0.0147 Ca 1 0.0082 0.0138 0.0296 0.0004 0.0033 -0.0147 Al 1 0.0060 0.0018 0.0067 -0.0006 0.0028 0.0003 Si 1 0.0060 0.0018 0.0067 -0.0006 0.0028 0.0003 Al 2 0.0045 0.0013 0.0050 0.0003 0.0020 0.0003 Si 2 0.0045 0.0013 0.0050 0.0003 0.0020 0.0003 Al 3 0.0044 0.0012 0.0059 -0.0002 0.0020 0.0001 Si 3 0.0044 0.0012 0.0059 -0.0002 0.0020 0.0001 Al 4 0.0038 0.0012 0.0060 0.0001 0.0019 0.0002 Si 4 0.0038 0.0012 0.0060 0.0001 0.0019 0.0002 O 2 0.0054 0.0016 0.0087 -0.0003 0.0023 0.0007 O 3 0.0073 0.0025 0.0105 -0.0006 0.0041 -0.0002 O 4 0.0105 0.0029 0.0161 0.0007 0.0084 0.0002 O 5 0.0065 0.0025 0.0101 -0.0009 0.0032 -0.0008 O 6 0.0083 0.0024 0.0102 0.0005 0.0037 0.0001 O 7 0.0079 0.0023 0.0083 0.0002 0.0028 0.0006 O 8 0.0082 0.0022 0.0100 0.0000 0.0024 -0.0002 REM M PDF 41-1480 REM M av.T-O: 1.718, 1.622, 1.629, 1.630 RVAL 0.035 TEST At least one temperature factor missing in the paper. (Code 53)