Plate 4. Selected key textural relationships in the pelitic and migmatite gneiss. 3. Rounded andalusite porphyroblasts (A) included with disharmonious fibrolitic sillimanite (S) in a large K-feldspar phenocryst (K). Sample 161-976B-101R-2, 38-41 cm. Plane-polarized light. Scale bar is 200 µm.