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Cores 11 through 26 by Gary B. Dr - University of Illinois at Urbana ...

Cores 11 through 26 by Gary B. Dr - University of Illinois at Urbana ...

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Table 23. Elemental composition <strong>of</strong> samples selected from Core 13Subsample 13-01 13-02 13-03 13-04 13-18 AverageLab. No. R21985 R21986 R21987 R21988 R21989Depth Interval (ft) 0.0-0.61 0.61-1.38 1.38-2.0 2.0-2.8 10.5-13.0Horizon Ap B B B CSiO 2(%) 84.50 84.28 80.72 80.19 86.99 83.34Al 2O 3(%) 6.00 7.07 8.65 9.09 5.97 7.36Fe 2O 3(%) 1.85 2.20 3.16 3.35 1.77 2.46K 2O (%) 1.68 1.95 2.05 2.05 1.35 1.82CaO (%) 0.79 0.55 0.57 0.62 0.75 0.66MgO (%) 0.21 0.29 0.43 0.45 0.37 0.35Na 2O (%) 0.92 0.90 0.91 0.95 1.<strong>26</strong> 0.99TiO 2(%) 0.40 0.50 0.49 0.42 0.19 0.40P 2O 5(%) 0.13 0.09 0.<strong>11</strong> 0.09 0.05 0.09MnO 2(%) 0.09 0.08 0.07 0.08 0.06 0.08SO 3(%) 0.01 0.01 0.01 0.01 0.02 0.01Barium 436 477 484 468 286 430Chromium

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