Solid solutions of Fe2O3and Mn2O3with the bixbyite structure may be obtained to at least 50 mole % Fe2O3. Over the whole range, the lattice parameter is essentially constant. Mo¨ssbauer spectroscopy and susceptibility measurements indicate that these solid solutions become antiferromagnetic at much lower temperatures than does Mn2O3itself. In fact, 2 mole % Fe2O3causes a steep drop inTN, from ∼82° to ∼40°K. However, this value remains relatively unaffected by further increase in Fe2O3concentration. The susceptibility measurements also indicate a second transition, at about 15°K below the antiferromagnetic ones, to apparently weak ferromagnetism with extremely low residual moments (∼0.01&mgr;B/formula unit at 4.2°K). Mo¨ssbauer spectra of the 50 mole % powdered specimen at 55 kOe and at both 24° and 9°K exhibit a small polarization of the atomic spins, which in turn suggests either a small induced or small spontaneous moment.