Figure F106. Dark green/green background alteration (up to 60 vol%) (Thin Section 150; Sample 309-1256D-160R-1, 12–14 cm) (field of view = 4 cm × 2.4 cm; plane-polarized light). Two 0.5 mm veins of chlorite, titanite, pyrite, quartz, and minor prehnite and discontinuous 0.2 mm alteration halo.
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