Figure F9. Photograph of interval 187-1164B-4R-2, 88-93 cm, showing a large aphyric basalt clast in basaltic breccia exhibiting the contrast in appearance of altered and unaltered areas. Olivine and plagioclase crystals are emphasized in the alteration halo adjacent to the breccia. Note the presence of numerous smaller clasts of similar aphyric basalt in the breccia.