One of us (Phinney, 1962) has made a systematic study of the mineralogy and major element chemistry of a sequence of rocks from a regional metamorphic terrane in Nova Scotia. The rocks, collected from St. Paul Island and Cape North, Nova Scotia, are represented by one from the garnet zone, 19 from the staurolite zone, two from the kyanite isograd, and one from the kyanite zone. The results of that study indicate that though the rock as a unit might represent an equilibrium facies characteristic of the temperature and pressure under which it was formed, there are distinct inhomogeneities in mineral composition on the hand specimen and thin section level.

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