Figure F82. A 1- to 2-mm-wide vein of calcite (near walls), with successive fillings of goethite, celadonite, and chalcedony (center) in Sample 192-1183A-67R-1 (Piece 2C, 46-48 cm) (field of view = 5.5 mm; plane-polarized light; photomicrograph ID# 1183A

Figure F82. A 1- to 2-mm-wide vein of calcite (near walls), with successive fillings of goethite, celadonite, and chalcedony (center) in Sample 192-1183A-67R-1 (Piece 2C, 46-48 cm) (field of view = 5.5 mm; plane-polarized light; photomicrograph ID# 1183A_028).