Pacific Ring of Fire Expedition. Photograph shows a piece of one of the chimney spires in the next image. It has been cut in half and is 22 cm long. The interior of the chimney is lined by a copper-rich mineral, chalcopyrite. The gray and white zone near the exterior of the chimney is composed of iron, zinc and barium-rich minerals called pyrite, sphalerite and barite.

Image ID: expl0094, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Mariana Arc region, Western Pacific Ocean
Photo Date: 2004 April
Credit: Pacific Ring of Fire 2004 Expedition. NOAA Office of Ocean Exploration; Dr. Bob Embley, NOAA PMEL, Chief Scientist

• High Resolution Photo Available