Figure F33. An assortment of veins from Hole U1301B basalts. A. Microvein of saponite (10–20 µm wide), with saponite filling the adjacent vesicles and replacing olivine phenocryst (Sample 301-U1301B-36R-1 [Piece 4, 29–32 cm]); plane-polarized light (field of view [FOV] = 5.5 mm). B. Iron oxyhydroxide and saponite vein, 1.5 mm wide (Sample 301-U1301B-1R-1 [Piece 15, 118–121 cm]); plane-polarized light (FOV = 5.5 mm). C, D. Micrometer-wide calcium carbonate vein, with saponite lined walls, cutting through plagioclase phenocrysts and the intergranular ground mass (Sample 301-U1301B-18R-4 [Piece 1, 17–19 cm]); (C) plane-polarized light (FOV = 5.5 mm), (D) close-up of the fibrous carbonate vein; cross-polarized light (FOV = 1.4 mm). E. Saponite, iron oxyhydroxide, and celadonite vein (1 mm wide) (Sample 301-U1301B-4R-1 [Piece 9, 62–63 cm]); plane-polarized light (FOV = 5.5 mm).
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