In an attempt to find conditions suitable for aqueous oxidation of titanomagnetite in submarine basalts, synthetic titanomagnetite powders have been exposed to solutions with different pH's and gas fugacities at different temperatures. Analysis of dissolved Fe and Ti, thermomagnetic measurements, and x-ray measurements all confirm that aqueous exidation by Fe-migration does occur. Furthermore, it is, in the first order, pH dependent, implying that 'maghemitization' of ocean floor basalts proceeds most favorably under what geochemists call water-dominated conditions, where basalt-seawater interaction leads to an increase in acidity.