Figure F53. Photomicrographs of serpentine bastite pseudomorphs of primary orthopyroxene grains in Hole 1270A harzburgites exhibiting undeformed protogranular texture (plane-polarized light: blue filter; field of view = 5.5 mm). The primary mineral pseudomorphed is indicated on the photomicrographs: ol = olivine, opx = orthopyroxene, sp = spinel. A. Orthopyroxene pseudomorph (Sample 209-1270A-1R-1, 35–38 cm) (image 1270A_015). B. An enclosed olivine pseudomorph and a large euhedral spinel grain (Sample 209-1270A-1R-1, 139–141 cm) (image 1270A

Figure F53. Photomicrographs of serpentine bastite pseudomorphs of primary orthopyroxene grains in Hole 1270A harzburgites exhibiting undeformed protogranular texture (plane-polarized light: blue filter; field of view = 5.5 mm). The primary mineral pseudomorphed is indicated on the photomicrographs: ol = olivine, opx = orthopyroxene, sp = spinel. A. Orthopyroxene pseudomorph (Sample 209-1270A-1R-1, 35–38 cm) (image 1270A_015). B. An enclosed olivine pseudomorph and a large euhedral spinel grain (Sample 209-1270A-1R-1, 139–141 cm) (image 1270A_017).