Figure F55. Photomicrographs showing secondary minerals in basalts from Hole 1179D. A. Palagonitized glass in hyaloclastite in plane-polarized light (Sample 191-1179D-20R-3 [Piece 3D, 139-142 cm]) (see "Site 1179 Thin Sections"). B. Vein with calcite and celadonite in matrix with smectite in plane-polarized light (Sample 191-1179D-12R-4 [Piece 1D, 83-86 cm]) (see "Site 1179 Thin Sections"). C. Vesicles with calcite and zeolite in cross-polarized light (Sample 191-1179D-22R-5 [Piece 7, 135-137 cm]) (see "Site 1179 Thin Sections"). D. Vesicles with smectite and celadonite in plane-polarized light (Sample 191-1179D-12R-2 [Piece 3, 13-15 cm]) (see "Site 1179 Thin Sections").