Iron　oxide　minerals,　such　as　hematite　and　magnetite,　are　commonly　found　in　a　wide　range　of　geological　environments.　Their　Fe　isotopic　composition　acts　as　a　potent　geochemical　tracer,　finding　applications　across　various　realms　of　Earth　sciences.　However,　natural　iron　oxide　minerals　often　have　a　high　Cr　content　up　to　percentile　levels,　necessitating　correction　of　isobaric　interference　caused　by　54Cr+　on　54Fe+　to　ensure　accurate　and　precise　in　situ　Fe　isotopic　compositions.　In　this　study,　a　pure　chromium　metal　with　homogeneous　isotopic　compositions　was　examined　within　the　analysis　sequence　to　obtain　the　fractionation　factor　of　Cr　(βCr)　for　isobaric　interference　correction.　A　femtosecond　laser　ablation　system　combined　with　wet　plasma　conditions　was　used　to　decrease　the　matrix　effect.　We　synthesized　a　series　of　magnetite　and　hematite　samples　with　simple　matrix　as　well　as　natural　magnetite　samples　with　complex　matrix　to　evaluate　the　feasibility　of　Cr　interference　correction.　By　employing　our　proposed　correction　method,　the　deviation　caused　by　the　isobaric　interference　of　54Cr+　was　effectively　eliminated.　The　corrected　δ56Fe　values　for　hematite　and　magnetite　samples,　even　with　a　Cr/Fe　ratio　of　as　high　as　1.27,　exhibited　good　agreement　with　the　reference　values　within　the　long-term　reproducibility　uncertainty　of　0.10‰.　These　results　indicate　the　robustness　of　Cr　interference　correction　in　obtaining　accurate　Fe　isotopic　compositions　of　Cr-rich　iron　oxides.　©　2024　Elsevier　B.V.