Figure F22. X-ray diffractogram traces of samples from lithologic Unit III. Z = zeolite; Clay = nonbasal clay mineral reflection; Qz = quartz; CT = opal-CT; Hal = halite; and Paly = palygorskite. Halite is from seawater. Sample 185-1149A-21X-1, 60-61 cm, is from the laminated zeolitic clay shown in Figure F19. Sample 185-1149B-7R-1, 8-37 cm, is from clay layers intercalated with radiolarian chert and porcelanite. Sample 185-1149B-14R-CC, 4-7 cm, is from a clayey zeolite silt. Note the presence of palygorskite. Note that individual diffractograms are offset vertically for clarity.