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Identification of the iron mineral phases produced on corroded iron coupons after treatment with strains TCE1 and LBE of D. hafniense. On the left are images of the areas analyzed by Raman spectroscopy (squares). On the right are the corresponding Raman spectra, identified as follows: 1, lepidocrocite (Le); 2, mixture of poorly crystallized mackinawite (M) and elemental sulfur (S); 3, vivianite (Vi); 4, mixture of vivianite (Vi) and lepidocrocite (Le); and 5, elemental sulfur (S).
