Figure F50. Photomicrograph of fine-grained amphibole and serpentine schist. Intermediate-grained, pale brown amphibole in the lower right corner of the photo is aligned parallel to the crystal-plastic foliation in the olivine mylonite. Fine-grained, schistose, colorless amphibole in the upper left corner appears to have formed concurrently with schistose serpentine in the center of the photo during late greenschist facies deformation and alteration of a gabbroic vein (Sample 209-1271B-11R-1, 88–91 cm) (cross-polarized light: blue filter; field of view = 2.75 mm; image 1271B

Figure F50. Photomicrograph of fine-grained amphibole and serpentine schist. Intermediate-grained, pale brown amphibole in the lower right corner of the photo is aligned parallel to the crystal-plastic foliation in the olivine mylonite. Fine-grained, schistose, colorless amphibole in the upper left corner appears to have formed concurrently with schistose serpentine in the center of the photo during late greenschist facies deformation and alteration of a gabbroic vein (Sample 209-1271B-11R-1, 88–91 cm) (cross-polarized light: blue filter; field of view = 2.75 mm; image 1271B_103).