Plate 3. Selected key textural relationships in the pelitic and migmatite gneiss. 1. Foliation defined by intensely oriented harmonious fibrolite (S) with augen of magnetite (black) and aggregates of quartz (Q) and K-feldspar (K). Sample 161-976B-95R-2, 2

Plate 3. Selected key textural relationships in the pelitic and migmatite gneiss. 5. Example of disharmonious fibrolite (S) included in large K-feldspar (K) and plagioclase (P) phenocrysts. Leucosome domain of a migmatitic gneiss. Sample 161-976B-95R-2, 24-28 cm. Cross-polarized light. Scale bar is 200 µm.