File:Garnet porphyroblast.JPG

Mylonitic gneiss with garnet (red) and plagioclase (white) porphyroblasts, Otrøy, Western Gneiss Region, Norway. The mylonite forms the tectonic contact

English Peridotite rock with pyrope (purple garnet) porphyroblasts

DescriptionGarnet Mica Schist Syros Greece.jpg English: Garnet mica schist on Syros in Greece, showing porphyroblasts of garnet. Scale: the euro coin has

vermiculite, and small porphyroblasts. In places, weathering and erosion of Wissahickon Formation has produced detrital garnets, which can be found in