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Fig. 4


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Spectres DRX des cuirasses de KOB des deux collines étudiées. En haut sur roche totale, en bas sur fraction argileuse (voir Tab. S1 pour la localisation et la composition chimique des 4 échantillons).

DRX spectrum of KOB’s iron duricrusts from both studied hills. Top on total rock, bottom on clay fraction (see Tab. S1 for the location and chemical composition of the 4 samples).

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