Fig. 8

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XRD patterns of C-304, C-304 S 15%, C-304 S 25%, and ferruginous sand, N.M. ferruginous sand, and E.M. ferruginous sand. The nomenclature for the mineral phases is as follows: quartz (Q), orthoclase/microcline (O), muscovite (M), aragonite (A), magnetite (N), ilmenite (I), labradorite (L), and calcite (C).