"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-231 106 131 143 SiO2 0.13 0.15 0.2 Al2O3 0.11 0.05 0.04 FeO 43.35 41.81 40.96 Fe2O3 0.81 5.29 6.7 feot 44.07 46.57 46.98 MnO 0.33 0.47 0.55 MgO 1.48 1.25 1.32 TiO2 51.43 49.47 48.75 Total 141.7 145.06 145.49 S.F. calculated with 6 oxygens Si 0.007 0.008 0.01 Al 0.006 0.003 0.002 Fe2+ 1.852 1.778 1.741 Fe3+ 0.031 0.202 0.256 Mn 0.014 0.02 0.024 Mg 0.113 0.095 0.1 Ti 1.976 1.892 1.864 Sum 3.999 3.998 3.997 Hem(a) 0.83 5.39 6.86 Hem(c) 0.78 5.08 6.43