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. 2. Idiomorphic magnetite crystals (black) surrounded by muscovite (m) and decussate aggregates of biotite (b). Sample 161-976B-98R-1, 38-40 cm. Plane-polarized light. Scale bar is 200 µm.