Figure F30. Photomicrograph of plagioclase and clinopyroxene phenocrysts from Unit 25. The plagioclase crystals are fresh, whereas the pyroxenes are completely altered to clay and quartz (Sample 193-1189B-15R-1 [Piece 10, 131-134 cm] in cross-polarized light; width of view = 1.38 mm. Photomicrograph ID# 1189B

Figure F30. Photomicrograph of plagioclase and clinopyroxene phenocrysts from Unit 25. The plagioclase crystals are fresh, whereas the pyroxenes are completely altered to clay and quartz (Sample 193-1189B-15R-1 [Piece 10, 131-134 cm] in cross-polarized light; width of view = 1.38 mm. Photomicrograph ID# 1189B_47; thin section 133).