Figure F37. Photomicrographs of altered primary minerals (olivine) by clay (probably saponite). Pl = plagioclase, Ol = olivine, Ilm = ilmenite, Px = pyroxene. A. Weathering along a part of the rim (Sample 205-1253A-34R-2, 97-99 cm; 555 mbsf; cross-polarized light [XPL]). B. Alteration along intramineral fissures (Sample 205-1253A-34R-2, 97-99 cm; 555 mbsf; XPL). C. Nearly complete replacement of olivine by clay (Sample 205-1253A-34R-2, 97-99 cm; 555 mbsf; XPL). D. Totally replaced olivine by clay (Sample 205-1253A-32R-3, 32-34 cm; 546.07 mbsf; plane-polarized light).

Figure F37. Photomicrographs of altered primary minerals (olivine) by clay (probably saponite). Pl = plagioclase, Ol = olivine, Ilm = ilmenite, Px = pyroxene. A. Weathering along a part of the rim (Sample 205-1253A-34R-2, 97-99 cm; 555 mbsf; cross-polarized light [XPL]). B. Alteration along intramineral fissures (Sample 205-1253A-34R-2, 97-99 cm; 555 mbsf; XPL). C. Nearly complete replacement of olivine by clay (Sample 205-1253A-34R-2, 97-99 cm; 555 mbsf; XPL). D. Totally replaced olivine by clay (Sample 205-1253A-32R-3, 32-34 cm; 546.07 mbsf; plane-polarized light).