In the southeast of Iran, titaniferous magnetite deposits associated with the gabbro rocks occur in Kahnuj ophiolitic complex. Mineraloghraphy studies have revealed the primary and secondary ore mineral consist of titanomagnetite, ilmenite, hematite, goethite, martite, pyrite, chalcopyrite, pyrrhotite and silicate minerals (plagioclase, pyroxene, hornblende, olivine, alkali feldspar). Trellis-sandwich textures and ilmenite-titanomagnetite intergrowths are resulted from oxidation of former Ti-rich magnetite at different temperatures. Chemical analyses show that the ilmenite and magnetite (titanomagnetite) contains 46.51 to 52.68 and 4.00 to 19.71 wt.% TiO₂ and 1.00 to 2.98 and 0.00 to 1.74 wt.% V₂O₃, respectively. The ulvöspinel (Mol % Usp) (Fe₂TiO₄) in titanomagnetite shows a composition ranging from 4.58 to 56.87 wt.%, and ilmenite lamellae are varying thickness and ilmenite type 1 to 3 contain of 88.23 to 93.94, 93.04 to 99.80 and 99.09 to 99.73 wt.% of the ilmenite (Mol % Ilm), respectively. Compositions of intergrowth Tm-Ilm pairs (type 2) were plotted on T/fO₂ diagrams. The Tm-Ilm pairs show varying degrees of re-equilibration to subsolidus temperatures (551 to 830°C) and fO₂ (-21.6 to -23.97). The Tm-Ilm pairs from Dar Gaz cluster around the QFM buffer curve for 1.5 kbar total pressure.