Figure F60. Photomicrograph showing fine-grained talc-amphibole schist. Layered schistose talc defines a strong foliation that is cut by anastomosing shear fractures. Fibrous amphibole may represent an earlier phase of deformation. The original mineralogy of the altered porphyroclast on the left side of the image is unknown (Sample 209-1275D-1R-1, 9–11 cm) (cross-polarized light; field of view = 2.75 mm; image 1275D_029).