Domain structure observations on synthetic and natural Ti-rich titanomagnetites (≈TM60), some of which were made under external uniaxial pressure, lead to a new model for the domain state of such materials. Instead of a classical domain configuration, we observed in most cases a more complicated micromagnetic structure with multidomain particles consisting of a conglomerate of quasi-state domain, multidomain and spin cluster zones due to an inhomogeneous anisotropy field caused by internal stress. Pseudo-single domain properties such as stable TRM can be explained by spin rotation processes as in single domain particles.