Abstract <p>Radiation-induced damage in Fe₃O₄ magnetite crystals induced by Fe ion implantation at an energy of 5.6 MeV and a fluence of 10¹⁴ ions/cm² is studied using two Mössbauer spectroscopy methods: conversion electron Mössbauer spectroscopy, which detects conversion electrons from a depth of up to 0.5 μm, and X-ray Mössbauer spectroscopy, which detects secondary X-ray emission from a depth of up to 35 μm. Data for irradiated and unirradiated samples are compared. All Mössbauer spectra contain two sextets corresponding to the <i>A</i> and <i>B</i> positions in magnetite, with parameters consistent with published data. The Mössbauer line widths <i>G</i> are narrow, ranging from 0.3 to 0.4 mm/s. Fe ion irradiation did not cause significant disruption of the crystal lattice. However, in the spectrum of the irradiated sample measured using conversion electron Mössbauer spectroscopy at an effective depth of 0.5 μm, an additional FeO_<i>x</i> phase with an intensity of 10% is detected. The experimental data are analyzed based on the thermal spike model. The formation of the FeO_<i>x</i> phase is likely a result of quenching following overheating in the track region.</p>