Figure F47. Relatively fresh plagioclase (Pl) with fine-grained prehnite (Prh)- and chlorite (Chl)-filled microcracks in gabbro cut by a perpendicular prehnite and chlorite vein (Thin Section 62; Sample 345-U1415J-12R-1, 86–89 cm [Piece 12]; cross-polarized light). Coarse-grained prehnite veins with chlorite in the center appear to originate in the cataclastic zone.
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