Figure F57. Quartz amygdules in a spotted quartz-clay altered groundmass with disseminated pyrite (opaque minerals) from Unit 11, a vesicular sample from the upper sequence of Hole 1189B (interval 193-1189B-8R-1, 37-40 cm, in plane-polarized light; width of view = 2.75 mm [Photomicrograph ID# 1189B_28; thin section 118]). Apparent high relief derives from grinding marks on underlying glass slide.

Figure F57. Quartz amygdules in a spotted quartz-clay altered groundmass with disseminated pyrite (opaque minerals) from Unit 11, a vesicular sample from the upper sequence of Hole 1189B (interval 193-1189B-8R-1, 37-40 cm, in plane-polarized light; width of view = 2.75 mm [Photomicrograph ID# 1189B_28; thin section 118]). Apparent high relief derives from grinding marks on underlying glass slide.