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Fig. 13. X-ray diffractograms of synthetic Fe oxides sampled over a three and a half day period while salts were being removed by centrifuge washing and dialysis. Letters correspond to column 2 in Table 2. Goethite (G) peaks first begin to become visible in XRD scans d and e. Broad ferrihydrite (Fh) peaks are evident at 0.26 and 0.15 nm.
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