leg site hole core section top of sample interval (m) bottom of sample interval (m) fraction mineral percent 23 219 A 5 317.00 319.30 SILT 'diffuse scattering' measure 73.9 23 219 A 5 317.00 319.30 SILT 'amorphous material' measure 59.3 23 219 A 5 317.00 319.30 SILT PLAGIOCLASE 43.6 23 219 A 5 317.00 319.30 SILT MONTMORILLONITE 9.6 23 219 A 5 317.00 319.30 SILT CLINOPTILOLITE 42.7 23 219 A 5 317.00 319.30 SILT PYRITE 4.1 23 219 A 11 371.00 373.00 SILT 'diffuse scattering' measure 75.7 23 219 A 11 371.00 373.00 SILT 'amorphous material' measure 62.0 23 219 A 11 371.00 373.00 SILT QUARTZ 0.8 23 219 A 11 371.00 373.00 SILT PLAGIOCLASE 21.0 23 219 A 11 371.00 373.00 SILT MICA 1.8 23 219 A 11 371.00 373.00 SILT MONTMORILLONITE 62.5 23 219 A 11 371.00 373.00 SILT CLINOPTILOLITE 1.3 23 219 A 11 371.00 373.00 SILT PHILLIPSITE 12.6 23 219 A 13 387.00 389.10 SILT 'diffuse scattering' measure 85.6 23 219 A 13 387.00 389.10 SILT 'amorphous material' measure 77.6 23 219 A 13 387.00 389.10 SILT PLAGIOCLASE 8.2 23 219 A 13 387.00 389.10 SILT MONTMORILLONITE 75.6 23 219 A 13 387.00 389.10 SILT CLINOPTILOLITE 1.8 23 219 A 13 387.00 389.10 SILT PHILLIPSITE 12.4 23 219 A 13 387.00 389.10 SILT ANATASE 2.1