Although it is massive in outcrop and compositionally variable, the Exeter pluton in southeastern New Hampshire has a systematic, penetrative magnetic fabric. The direction of maximum susceptibility is parallel to the long axis of the pluton and to the axial trace of the anticline into which the pluton was emplaced. The direction of minimum susceptibility is normal to the fold surface of the anticline and to the contacts of the pluton. Magnetic foliation is most intense near the margins. The magnetic fabric is due to secondary magnetite and may mimic a petrofabric caused by magma flow or postemplacement strain.