Leg 169, Hole 856H, Core 31R, Section 1, 87.5-135 cm
This core, collected in the northeast Pacific Ocean in 1996, caught the attention of the land-based mining industry. It shows a stratified zone of copper-rich mineralization below a sulfide deposit. No one had ever seen copper mineralization of this type and size before. Not only did this discovery help us understand more about how these ore deposits form, but it revealed a new target for land-based mineral exploration.
Download a photo of the core. (JPG, 594 KB)
See http://www-odp.tamu.edu/publications/leg_ndx/169ndex.htm for more detailed information about Leg 169.