Figure 9 | Scientific Reports

Figure 9

From: Microbial nitrification and acidification of lacustrine sediments deduced from the nature of a sedimentary kaolin deposit in central Japan

Figure 9

Chemical compositions of Fe–Ti oxides in gaerome and kibushi clay. Graphs (a,c): TiO2-(FeO + MnO + MgO)-Fe2O3 mol. ratios of Fe–Ti oxides. Graphs (b,d): ratios of hematite-(pyrophanite + geikielite)-ilmenite components of ilmenite. The ferric/ferrous ratios of the minerals were stoichiometrically calculated as described in the text.

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