Figure F19. Photomicrograph in plane-polarized light of Sample 187-1164B-4R-2, 75-79 cm (see "Site 1164 Thin Sections"), showing palagonite-poor basaltic breccia with an abundance of unaltered, highly angular fragments of glass and olivine, as well as glass with palagonite rims and aphyric basalt. ol = olivine; gl = glass.