Plate 4. Selected key textural relationships in the pelitic and migmatite gneiss. 5. Mutual intergrowths between cordierite (Cd) and the granitic matrix, composed by K-feldspar (K), quartz, and minor plagioclase phenocrysts. Sample 161-976B-96R-1, 46-48 cm. Plane-polarized light. Scale bar is 500 µm.