PANGAEA_961660 Bulk chemical analysis of selected manganese nodules retrieved during VA13/2 cruise in the Equatorial North Pacific Glasby, Geoffrey P; Friedrich, Günther; Thijssen, Theo; Plüger, W L; Kunzendorf, Helmar; Ghosh, A K; Roonwal, G S Bulk chemical analysis of selected manganese nodules retrieved during VA13/2 cruise in the Equatorial North Pacific 2023-08-21 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.961660 Investigator Geoffrey P Glasby Earth Science Event label Latitude of event Longitude of event Elevation of event Identification Deposit type DEPTH, sediment/rock Nodules, size Manganese Iron Cobalt Nickel Copper Zinc Barium Silicon dioxide Aluminium oxide Structure geoscientificInformation Box corer Box corer/grab Free-fall grab Geochemistry manganese micronodule manganese nodule ocean Sediment VA-13/2 VA13-2-103GBH VA13-2-120GBH VA13-2-140GBH VA13-2-155KA VA13-2-165KA VA13-2-167-168GBH VA13-2-66KA VA13-2-67GBH VA13-2-73GBH VA13-2-74KA VA13-2-83KA X-ray fluorescence spectrometry Atomic absorption spectrophotometry Valdivia (1961) 1976-02-09 1976-03-10 Complete 9.252112 9.457161 -146.074056 -145.870049 0.0 m (DEPTH, sediment/rock) 0.0 m (DEPTH, sediment/rock) NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 450 data points text/tab-separated-values Glasby, Geoffrey P; Friedrich, Günther; Thijssen, Theo; Plüger, W L; Kunzendorf, Helmar; Ghosh, A K; Roonwal, G S (1982): Distribution, Morphology, and Geochemistry of Manganese Nodules from the Valivia 13/2 Area, Equatorial North Pacific. Distribution, morphology, and geochemistry of manganese nodules from the Valdivia 13/2 area, equatorial North Pacific, Pacific Science, 36(2), 241-263, hdl:10125/424 Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN

Manganese nodules from VA13/2 cruise (R/V Valdivia) were selected for a variety of morphologies and size. They were regrouped by size class and chemically analyzed in bulk. Mn, Fe, Ni, and Cu concentrations were determined by X-ray fluorescence spectroscopy following grinding and drying of the samples at 1l0°C for 24 hr. The elements Co, Zn, Al, Si, and Ba were analyzed in selected samples by atomic absorption spectrophotometry in Aachen. In addition, the percent lithogenous fraction of selected samples was determined following treatment of the sample by 25 percent HCl. Element composition in these nodules was then computed on a lithogenous-free basis to make allowance for the effects of variation in the silicate contents of the nodules. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.961660"! ** 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. This dataset represents the digitized Table 11, pp. 255, of the related publication.

http://en.wikipedia.org/wiki/Box_corer Box corer http://www.mindat.org/min-1209.html Copper http://www.mindat.org/min-2895.html Nickel http://www.mindat.org/min-4405.html Zinc https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961) Valdivia (1961) https://doi.org/10.7289/V52Z13FT The NOAA and MMS Marine Minerals Geochemical Database https://doi.org/10.7289/V53X84KN The NOAA and MMS Marine Minerals Bibliography https://en.wikipedia.org/wiki/Silicon_dioxide Silicon dioxide https://hdl.handle.net/10125/424 Distribution, Morphology, and Geochemistry of Manganese Nodules from the Valivia 13/2 Area, Equatorial North Pacific https://wiki.pangaea.de/wiki/NOAA-MMS NOAA-MMS DIF 9.4 2023-08-21 2026-04-29