Figure F11. Contact of a jasperoid vein (lower right) cutting altered perlite wallrock fragment (with plagioclase phenocrysts and disseminated pyrite) in Sample 193-1189B-6R-1 (Piece 2, 13–15 cm). Hematite inclusions are exceptionally abundant in this vein and adjacent jasperoid matrix. Width of view = 2.8 mm; ordinary light.

Figure F11. Contact of a jasperoid vein (lower right) cutting altered perlite wallrock fragment (with plagioclase phenocrysts and disseminated pyrite) in Sample 193-1189B-6R-1 (Piece 2, 13–15 cm). Hematite inclusions are exceptionally abundant in this vein and adjacent jasperoid matrix. Width of view = 2.8 mm; ordinary light.