leg site hole core section top of sample interval (m) bottom of sample interval (m) fraction mineral percent 31 290 A 1 108.50 111.10 BULK 'diffuse scattering' measure 86.0 31 290 A 1 108.50 111.10 BULK 'amorphous material' measure 71.6 31 290 A 1 108.50 111.10 BULK CALCITE 29.8 31 290 A 1 108.50 111.10 BULK QUARTZ 3.4 31 290 A 1 108.50 111.10 BULK PLAGIOCLASE 27.4 31 290 A 1 108.50 111.10 BULK MONTMORILLONITE 19.1 31 290 A 1 108.50 111.10 BULK PHILLIPSITE 13.5