Résumé : Gabbros from the Variscan Tisovita-Iuti ophiolite in Romania display the peculiar Cr-rich mica + calcite + quartz mineral association that is typical of listvenites. This metasomatic lithology appears as the end-product of a continuous petrographic series of transformed rocks from amphibolitized gabbros (resulting from an ocean-floor metamorphism) to listvenites. During these different degrees of modification, chromium is immobile and concentrated in the main silicate phases of each stage (amphibole, chlorite and white mica). This process could appear mineralogically and texturally continuous, but chlorite morphology and thermometry suggest two main processes. Listvenite formation characterizes a low-temperature (∼300°C) metasomatic stage overprinted on a previously warmer (<450°C) more common process described as ocean-floor metamorphism.