Figure 16. Large serpentinite clast with "ghostlike" crystals separated from the finer breccia matrix by a wide, composite vein at the clast margin. Thin anastomosing calcite veins also occur in the adjacent finer-grained breccia. Except along the boundary, peridotite in the serpentinite clast has been obscured by lighter colored serpentine (Upper Breccia Unit, Subunit IVA; Interval 149-899B-21R-2, 40-55 cm).

Figure 16. Large serpentinite clast with "ghostlike" crystals separated from the finer breccia matrix by a wide, composite vein at the clast margin. Thin anastomosing calcite veins also occur in the adjacent finer-grained breccia. Except along the boundary, peridotite in the serpentinite clast has been obscured by lighter colored serpentine (Upper Breccia Unit, Subunit IVA; Interval 149-899B-21R-2, 40-55 cm).