The compounds associated with corrosion, in metallic archaeological samples of carbon steel of insular origin were evaluated to establish their degree of deterioration and structural damage against air pollution. The iron phases present in samples of archaeological artifacts were detected by Raman spectroscopy and confocal Raman microcopy. These samples mainly exhibited ing mainly ${\beta} $-FeO (OH) type goethite oxyhydroxides and small amounts of akaganeite ${\alpha} $-FeO (OH) lepidocrocite ${\gamma} $-FeO (OH) due to
