"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 14 15 16 17 18 19 20 22 23 24 26 27 28 29 30 SiO2 39.44 39.23 38.94 39.66 39.47 39.79 38.40 39.09 39.39 37.51 39.21 39.46 38.28 38.12 37.91 Al2O3 0.13 0.05 0.09 0.08 0.08 0.10 0.07 0.07 0.05 0.04 0.07 0.07 0.03 0.04 0.01 FeOt 8.26 7.98 12.16 9.06 9.68 7.45 15.12 10.05 12.09 20.63 10.65 7.48 14.10 15.57 16.23 MnO 0.11 0.17 0.13 0.13 0.16 0.13 0.22 0.17 0.17 0.37 0.17 0.08 0.20 0.24 0.24 MgO 50.98 50.45 47.24 49.57 48.99 50.79 44.83 48.93 47.35 39.89 47.71 51.52 45.66 44.47 44.28 CaO 0.24 0.22 0.23 0.22 0.25 0.23 0.22 0.23 0.25 0.26 0.23 0.25 0.30 0.31 0.30 Cr2O3 0.17 0.16 0.10 0.10 0.11 0.12 0.17 0.01 0.03 0.09 NiO 0.40 0.45 0.32 0.46 0.56 0.45 0.35 0.28 0.20 0.40 Total 99.74 98.70 99.22 99.27 99.29 99.05 99.39 98.53 99.60 98.93 98.52 98.86 98.57 98.75 98.97 Structural formulae calculated with 4 oxygens Si 0.968 0.973 0.977 0.981 0.979 0.979 0.976 0.977 0.983 0.983 0.984 0.972 0.976 0.976 0.973 Al 0.004 0.002 0.003 0.002 0.002 0.003 0.002 0.002 0.001 0.001 0.002 0.002 0.001 0.001 0.000 Fet 0.170 0.165 0.255 0.187 0.201 0.153 0.321 0.210 0.252 0.452 0.224 0.154 0.300 0.334 0.348 Mn 0.002 0.004 0.003 0.003 0.003 0.003 0.005 0.004 0.004 0.008 0.004 0.002 0.004 0.005 0.005 Mg 1.866 1.864 1.767 1.827 1.812 1.863 1.699 1.823 1.762 1.559 1.784 1.891 1.734 1.698 1.693 Ca 0.006 0.006 0.006 0.006 0.007 0.006 0.006 0.006 0.007 0.007 0.006 0.007 0.008 0.008 0.008 Cr 0.003 0.003 0.002 0.002 0.002 0.002 0.003 0.000 0.001 0.002 Ni 0.008 0.009 0.006 0.009 0.011 0.009 0.007 0.006 0.004 0.008 Sum 3.028 3.025 3.020 3.017 3.018 3.018 3.020 3.022 3.015 3.016 3.013 3.027 3.024 3.023 3.027 Fo 91.66 91.85 87.38 90.70 90.02 92.40 84.09 89.67 87.47 77.51 88.87 92.47 85.24 83.58 82.95 Fa 8.34 8.15 12.62 9.30 9.98 7.60 15.91 10.33 12.53 22.49 11.13 7.53 14.76 16.42 17.05