Figure F21. Photomicrographs showing clinopyroxene and oxides in fine-grained oxide gabbro (Sample 209-1275B-10R-2, 41-44 cm) (field of view = 11 mm). A. plane-polarized light: blue + dark gray filters; image 1275B_050. B. cross-polarized light: blue filter; image 1275B_049.