Photomicrographs and backscattered electron (BSE) images of type 2 mafic granulites. (a) Complex corona and symplectite textures involving orthopyroxene + plagioclase coronae around clinopyroxene, and orthopyroxene + plagioclase + ilmenite ± hornblende symplectites around garnet porphyroblasts (sample MS02-3). Orthopyroxene, K-feldspar, and quartz inclusions in garnet grains. (b) BSE image showing corona and symplectite textures between garnet and clinopyroxene porphyroblasts (sample MS02-3). Clinopyroxene contains closely spaced orthopyroxene lamellae. (c) Orthopyroxene occurring as matrix grains, coronae around clinopyroxene, and symplectite around garnet (sample MS04-1). Biotite overprints symplectites of orthopyroxene + plagioclase + amphibole. (d) Poikiloblastic garnet and clinopyroxene separated by coronae of orthopyroxene + plagioclase (against clinopyroxene) and symplectites of orthopyroxene + plagioclase + amphibole + ilmenite (replacing garnet) (sample MS07-3). (e) Plagioclase occurring as coarse grains measuring 0.5–2.5 mm across (Pl-1) and fine grains of <0.5 mm (Pl-2) (sample MS02-3). (f) Plagioclase occurring as corona-like grains (Pl-s1) with orthopyroxene around clinopyroxene, and symplectite-like grains (Pl-s2) with orthopyroxene around garnet.
This PDF is available to Subscribers Only
View Article Abstract & Purchase OptionsFor full access to this pdf, sign in to an existing account, or purchase an annual subscription.