Figure F104. Photomicrograph showing late magmatic vein composed of quartz + albite granophyric intergrowths, followed by euhedral quartz, and later pyrite and saponite in massive basalt from Unit 1256D-1. Primary clinopyroxene is partly replaced by green clinopyroxene (aegirine-augite?) (Sample 206-1256D-9R-2, 7-9 cm; field of view = 2.5 mm; plane polarized light).

Figure F104. Photomicrograph showing late magmatic vein composed of quartz + albite granophyric intergrowths, followed by euhedral quartz, and later pyrite and saponite in massive basalt from Unit 1256D-1. Primary clinopyroxene is partly replaced by green clinopyroxene (aegirine-augite?) (Sample 206-1256D-9R-2, 7-9 cm; field of view = 2.5 mm; plane polarized light).