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DUPONT BIOREMEDIATION - STOCKTON, CALIF. AQUIFER SAMPLES <br /> X-RAY DIFFRACTION ANALYSES <br /> MBER <br /> ANALYSES BY CONOCO LXPLORATIONERES. &1987 SER. and RESEARCH SERVICES DIVIONS <br /> SOMI-QUANTITATIVE BULK (WHOLE ROCK) ANALYSIS <br /> (Weight Percent) <br /> B13-31' 613-45.5' 913-56.5` 813-74' <br /> QUARTZ 31 37 <br /> 45 42 <br /> PLAGIOCLASE FELDSPAR 37 20 24 25 <br /> POTASSIUM FELDSPAR -- Pas. Tr, Pos, Tr. Pos. Tr. <br /> TOTAL CLAY 23 3 4 21 <br /> AMPHIBOLE 8 7 15 10 <br /> CLAY SEPARATE ( <2 microns ) <br /> B13-31' B13-45.5' B13 55.5' 813.74' <br /> SMF(A ITE/ILLITE Dominant Dom iflail t Dominant Major <br /> (Mixed-Layer) <br /> (EXPANAIBILITY) (75°x) (800) (40%) (60%) <br /> -a KAOLINITF Minor Minor Minor Significant <br /> 1 <br /> ILIiTE / MICA Trace Trace Minor Significant <br /> — CHLORITE Pos. Tr, ----- Trace Pos. Tr. <br /> t <br />