(Table 2, page 1052) Palladium, iridium and gold contents of some oceanic manganese nodules


The abundance and distribution of palladium, iridium and gold has been determined in manganese nodules from widely varying locations and geological environments within the Atlantic, Indian and Pacific Oceans. The distribution of these metals is characterized by a lack of distinct regional variations, homogeneous distribution within an individual nodule, and a lack of any correlation with variations in major and other trace elements in the nodules. Assuming that all the iridium in the manganese nodules is of extraterrestrial origin, an upper limit on the mass accretion rate of interplanetary matter to the earth is calculated to be 60 tons/day over the surface of the earth.

The nodules were crushed and reduced to a 6ne powder in a ceramic mortar and irradiated for 24 hr in a nuclear reactor and converted to chlorides.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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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: Harriss, Robert C; Crocket, J H; Stainton, M (1968): Palladium, iridium and gold in deep-sea manganese nodules. Geochimica et Cosmochimica Acta, 32(10), 1049-1056

DOI https://doi.org/10.1594/PANGAEA.872388
Related Identifier https://doi.org/10.1016/0016-7037(68)90107-5
Related Identifier https://doi.org/10.7289/V52Z13FT
Related Identifier https://doi.org/10.7289/V53X84KN
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.872388
Creator Harriss, Robert C; Crocket, J H; Stainton, M
Publisher PANGAEA
Publication Year 1968
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 92 data points
Discipline Earth System Research
Spatial Coverage (-152.250W, -61.033S, 60.040E, 52.783N); Pacific Ocean; Atlantic Ocean; Carlsberg Ridge; Indian Ocean, Carlsberg Ridge; Southern Ocean; Blake Plateau, Atlantic Ocean; North-West Pacific Ocean
Temporal Coverage Begin 1875-09-11T00:00:00Z
Temporal Coverage End 1967-04-08T04:00:00Z