Figure F96. Background alteration mineralogy (Thin Section 56; Sample 309-1256D-110R-2, 58–60 cm) (field of view = 2.5 mm; plane-polarized light). Olivine phenocrysts replaced by dark brown saponite (rim) and calcite (core). Plagioclase and clinopyroxene phenocrysts are locally stained by saponite.
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