Cordierite in the Peraluminous Granites of the Meguma Zone, Nova Scotia, Canada

Lynne A. Maillet and D. Barrie Clarke
Department of Geology, Dalhousie University, Halifax, Nova Scotia, Canada B3H 3J5

Abstract: The peraluminous granitoid intrusions of southern Nova Scotia contain several mineralogical expressions of the excess alumina, including variable amounts of cordierite, in different textural types of granitoids, ranging from fine-grained aplites through coarser grained monzogranites and granodiorites, to very coarse-grained pegmatites. A detailed study of the spatial, textural and chemical characteristics of these cordierites suggests that the majority are of relict metamorphic origin, but that primary magmatic cordierites, as well as cordierites which grew in equilibrium with a water-rich fluid phase, also occur.

Keywords: cordierite • granitoids • Nova Scotia • Canada

Mineralogical Magazine; December 1985 v. 49; no. 354; p. 695-702; DOI: 10.1180/minmag.1985.049.354.08
© 1985, The Mineralogical Society
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