Figure F133. A. Pale green amphibole vein with associated talc alteration zone (interval 305-U1309D-111R-2, 45–74 cm). Note slip-fiber texture on exposed surface. B. Banded structure, possibly related to altered intrusive contacts, in pervasive talc alteration zone (interval 305-1309D-140R-2, 57–77 cm). C. Brown slip-fiber amphibole (Sample 305-U1309D-128R-3, 73–76 cm) (plane-polarized light; magnification = 10×). Note lack of alteration.
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