Figure F105. Site 1189 photomicrographs. A. Quartz-pyrite veins with halos of poikiloblastic quartz crosscut by later fractures filled with quartz. Note pyrite along rims in the vein in the lower part of the image (Unit 15; Sample 193-1189A-8R-1 [Piece 6, 42-44 cm] in plane-polarized transmitted light; width of view = 5.5 mm. Photomicrograph ID# 1189A_92; thin section 38). B. Quartz-pyrite vein with halo of poikiloblastic quartz (Unit 15; Sample 193-1189A-8R-1 [Piece 6, 42-44 cm] in cross-polarized transmitted light; width of view = 2.75 mm. Photomicrograph ID# 1189A_52; thin section 38). C. Anastomosing quartz-anhydrite-pyrite vein. Note that anhydrite occupies the center of the vein and that pyrite is present along the rims of the altered volcanic clast (Unit 8; Sample 193-1189A-4R-1 [Piece 3, 21-24 cm] in plane-polarized transmitted light; width of view = 5.5 mm. Photomicrograph ID# 1189A_104; thin section 29). D. Zoned quartz-anhydrite vein with quartz rims around central anhydrite. Note the association of pyrite and chalcopyrite with the anhydrite (Unit 7; Sample 193-1189A-3R-1 [Piece 12, 70-73 cm] in reflected light; width of view = 1.40 mm. Photomicrograph ID# 1189A

Figure F105. Site 1189 photomicrographs. A. Quartz-pyrite veins with halos of poikiloblastic quartz crosscut by later fractures filled with quartz. Note pyrite along rims in the vein in the lower part of the image (Unit 15; Sample 193-1189A-8R-1 [Piece 6, 42-44 cm] in plane-polarized transmitted light; width of view = 5.5 mm. Photomicrograph ID# 1189A_92; thin section 38). B. Quartz-pyrite vein with halo of poikiloblastic quartz (Unit 15; Sample 193-1189A-8R-1 [Piece 6, 42-44 cm] in cross-polarized transmitted light; width of view = 2.75 mm. Photomicrograph ID# 1189A_52; thin section 38). C. Anastomosing quartz-anhydrite-pyrite vein. Note that anhydrite occupies the center of the vein and that pyrite is present along the rims of the altered volcanic clast (Unit 8; Sample 193-1189A-4R-1 [Piece 3, 21-24 cm] in plane-polarized transmitted light; width of view = 5.5 mm. Photomicrograph ID# 1189A_104; thin section 29). D. Zoned quartz-anhydrite vein with quartz rims around central anhydrite. Note the association of pyrite and chalcopyrite with the anhydrite (Unit 7; Sample 193-1189A-3R-1 [Piece 12, 70-73 cm] in reflected light; width of view = 1.40 mm. Photomicrograph ID# 1189A_8; thin section 30).