Figure F8. A. Close-up photograph of a 10-cm-long pyrrhotite vein (interval 204-1247B-5H-6, 116-135 cm). B. High-resolution MS plot of interval 204-1247B-5H-6, 33-33.6 mbsf. A large and narrow peak is associated with the presence of magnetic minerals (pyrrhotite) shown on the close-up photograph.

Figure F8. A. Close-up photograph of a 10-cm-long pyrrhotite vein (interval 204-1247B-5H-6, 116-135 cm). B. High-resolution MS plot of interval 204-1247B-5H-6, 33-33.6 mbsf. A large and narrow peak is associated with the presence of magnetic minerals (pyrrhotite) shown on the close-up photograph.