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doi:10.2204/iodp.pr.312.2006

Figure F50. Subtype of hyaloclastite consisting of basalt clasts and altered glassy clasts and glassy shards cemented by quartz, carbonate, and sulfide (mineralized volcanic breccia). A. Thin section (Sample 309-1256D-122R-1 [Piece 19, 140–142 cm]). B. Spherulitic texture in cryptocrystalline basalt clasts of the hyaloclastite (Sample 309-1256D-122R-1 [Piece 16, 119–124 cm] (plane-polarized light, blue filter; field of view = 5 mm). Light spots are sulfides.