Abstract: The crystal structure of a potentially new mineral, the Fe²⁺-dominant analogue of armalcolite with the idealized formula Fe²⁺Ti₂O₅ has been solved. The sample studied originates from a pneumatolytic association related to the lamproite complex of SE Spain. The mineral is orthorhombic, space group Cmcm, the unit-cell parameters are a = 3.7325(1) Å, b = 9.7649(4) Å, c = 9.9902(3) Å, V = 364.12(2) ų. The crystal-chemical formula (Formula presented.) (Z = 4) is in good agreement with the chemical composition of the mineral.