The cores and dredges described in this report were taken on the KH-71-5, Phoenix Expedition in Nov 1971 until March 1972 by the Ocean Research Institute, University of Tokyo from the R/V Hakuho Maru. A total of 13 cores and dredges sites have been recovered.

From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.

Supplement to: Tsubota, H (1973): Preliminary report of the Hakuho Maru Cruise KH-71-5 (Phoenix Expedition), November 18,1971 - March 10,1972, Eastern North and South Pacific. Ocean Research Institute, University of Tokyo, 82 pp