Figure F20. Thin section photomicrographs of highly olivine-augite-plagioclase-phyric basalt showing large olivine, titanaugite, and small plagioclase phenocrysts from Unit III (Sample 330-U1374A-3R-2W, 108–110 cm; Thin Section 118). A. Plane-polarized light. B. Crossed polars. C. Close-up of groundmass. D. Hornblende inclusion in titanaugite phenocryst.
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