Figure F208. Occurrence and paragenesis of secondary (metamorphic) clinopyroxene. Isolated single crystals of anhedral granular secondary clinopyroxene in a mineral assemblage of actinolite hornblende, albite-rich plagioclase, and magnetite and a patchy texture. A. Initial stage with primary clinopyroxene during fragmentation into tiny anhedral grains (Thin Section 30; Sample 312-1256D-189R-1, 68–69 cm) (field of view [FOV] = 0.6 mm; plane-polarized light). B. Intermediate stage where relict clinopyroxene forms discrete clusters of small secondary anhedral clinopyroxene plus tiny oxide grains (Thin Section 35; Sample 312-1256D-194R-1, 36–37 cm) (FOV = 0.6 mm; plane-polarized light). C. Final stage with equigranular framework of clinopyroxene, plagioclase, amphibole, and oxides (Thin Section 39; Sample 312-1256D-198R-1, 45–49 cm) (FOV = 0.6 mm; plane-polarized light).
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