"A. Demant, P. Munch, N. Romeuf, D. Morata" "Chapter 34. Distribution and chemistry of secondary minerals (zeolites and clay minerals) from Hole 917A, southeast Greenland Margin" 152SR-231 266 268 269 270 271 295 296 1 2 3 4 5 6 7 8 9 10 11 12 SiO2 49.92 48.36 48.98 49.47 49.88 49.56 49.70 51.86 49.26 49.90 48.60 48.85 51.10 49.82 49.56 49.90 49.53 49.26 51.10 Al2O3 4.73 2.75 4.50 4.24 3.48 4.71 3.38 2.15 4.22 3.77 3.12 1.90 1.52 3.80 3.65 1.24 4.27 4.23 1.71 FeO 7.66 15.71 8.28 8.19 9.06 7.76 10.28 8.00 7.62 9.34 13.32 15.90 11.02 8.14 9.62 19.15 7.48 8.08 10.23 MnO 0.18 0.30 0.15 0.13 0.24 0.22 0.18 0.19 0.17 0.21 0.26 0.42 0.29 0.20 0.21 0.62 0.16 0.20 0.30 MgO 14.25 11.97 14.06 14.35 14.36 13.92 13.21 16.53 14.41 14.42 12.54 11.04 14.80 14.26 14.44 11.19 14.23 14.65 14.79 CaO 21.21 17.86 20.92 21.03 20.61 21.30 20.51 20.40 21.76 20.77 19.48 19.19 19.53 21.47 20.98 15.86 21.73 20.89 20.21 Na2O 0.30 0.48 0.30 0.26 0.27 0.29 0.30 0.14 0.22 0.26 0.30 0.32 0.22 0.22 0.24 0.30 0.23 0.23 0.26 TiO2 1.19 1.78 1.21 1.07 1.06 1.29 1.18 0.54 1.03 0.93 1.42 1.43 0.71 0.81 1.05 0.94 0.99 1.00 0.62 Cr2O3 0.41 0.52 0.24 0.18 0.42 0.05 0.13 0.28 0.11 0.03 0.16 0.09 0.29 0.26 0.05 Total 99.84 99.21 98.93 98.97 99.14 99.46 98.80 99.94 98.96 99.70 99.05 99.07 99.18 98.89 99.83 99.20 98.92 98.79 99.27 Structural formulae calculated with 6 oxygens and FeO as FeOt Si 1.857 1.871 1.848 1.861 1.879 1.854 1.888 1.921 1.854 1.871 1.868 1.900 1.933 1.877 1.862 1.945 1.863 1.857 1.929 AlIV 0.143 0.125 0.152 0.139 0.121 0.146 0.112 0.079 0.146 0.129 0.132 0.087 0.067 0.123 0.138 0.055 0.137 0.143 0.071 AlVI 0.064 0.048 0.049 0.034 0.061 0.040 0.015 0.042 0.038 0.010 0.001 0.046 0.023 0.002 0.052 0.045 0.005 Fe2+ 0.238 0.508 0.261 0.258 0.285 0.243 0.327 0.248 0.240 0.293 0.428 0.517 0.349 0.257 0.302 0.624 0.235 0.255 0.323 Mn 0.006 0.010 0.005 0.004 0.008 0.007 0.006 0.006 0.005 0.007 0.008 0.014 0.009 0.006 0.007 0.020 0.005 0.006 0.010 Mg 0.790 0.690 0.791 0.805 0.806 0.776 0.748 0.913 0.809 0.806 0.719 0.640 0.834 0.801 0.809 0.650 0.798 0.823 0.832 Ca 0.845 0.740 0.845 0.848 0.832 0.854 0.835 0.810 0.878 0.835 0.802 0.800 0.792 0.867 0.844 0.662 0.876 0.844 0.817 Na 0.022 0.036 0.022 0.019 0.020 0.021 0.022 0.010 0.016 0.019 0.022 0.024 0.016 0.016 0.017 0.023 0.017 0.017 0.019 Ti 0.033 0.052 0.034 0.030 0.030 0.036 0.034 0.015 0.029 0.026 0.041 0.042 0.020 0.023 0.030 0.028 0.028 0.028 0.018 Cr 0.012 0.016 0.007 0.005 0.012 0.002 0.004 0.008 0.003 0.001 0.005 0.003 0.009 0.008 0.001 Sum 4.010 4.032 4.022 4.020 4.020 4.010 4.014 4.021 4.027 4.027 4.030 4.025 4.021 4.021 4.035 4.009 4.020 4.026 4.025 Wo 44.98 37.99 44.45 44.28 43.07 45.42 43.59 40.97 45.44 43.01 40.99 40.58 39.90 44.90 43.04 33.84 45.76 43.76 41.24 En 42.04 35.42 41.56 42.04 41.75 41.29 39.06 46.19 41.86 41.54 36.71 32.48 42.06 41.48 41.21 33.22 41.68 42.69 41.98 Fs 12.98 26.59 13.98 13.68 15.18 13.29 17.36 12.84 12.70 15.44 22.31 26.95 18.04 13.62 15.75 32.94 12.56 13.54 16.78 Fm 0.24 0.43 0.25 0.25 0.27 0.24 0.31 0.22 0.23 0.27 0.38 0.45 0.30 0.25 0.28 0.50 0.23 0.24 0.29