Figure F73. Interval 192-1183A-66R-2 (Piece 3, 30-48 cm) showing 10-mm-wide black halos on both sides of a 3- to 5-mm-wide vertical vein filled with calcite, smectite, and minor chalcedony (multiple reopenings) in dark gray basalt.

Figure F73. Interval 192-1183A-66R-2 (Piece 3, 30-48 cm) showing 10-mm-wide black halos on both sides of a 3- to 5-mm-wide vertical vein filled with calcite, smectite, and minor chalcedony (multiple reopenings) in dark gray basalt.