Piemontite occurs as small, reddish-black, monoclinic crystals in the manganese mines at San Marcel, near Ivrea in Piedmont, and in crystalline schists at several places in Japan.
The northern paragneiss zone contains lenses of various lithologies, such as calcareous schists, amphibolite, eclogite, peridotite (mostly thoroughly serpentinized) and gabbro.
He carried out a lot of the early earliest mapping of the Western Highlands and Islands of Scotland, including the Lewisian of Coll and Tiree, the Mesozoic sediments and Tertiary lavas of Morvern and Ardnamurchan, and the Moine Schists of Ardnamurchan, Sunart and South Morar.
Similarly, certain schists on Baranof Island are believed to have been contiguous with the Leech River Schists on Vancouver Island around 50 Ma, and subsequently transported northward with other elements of the Chugach-Prince William terrane.