Roméite is a calcium mineral with the formula (Ca,Fe,Mn,Na)2(Sb,Ti)2O6(O,OH,F). Roméite is a honey-yellow mineral crystallizing in the hexoctahedral crystal system of 5.5-6.0. It occurs in Algeria , China, and the United States iron and in hydrothermal -bearing veins.
Its type locality is Prabornaz Mine , Saint-Marcel. It was named after Jean-Baptiste L. Romé de l'Isle. Brugger, et al. (1997) used infrared to measure water content in Roméite crystals.