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Glasby, Geoffrey P; Meylan, Maurice A; Margolis, Stanley V; Bäcker, Harald (2023): Major element analyses of manganese nodules from the Southwestern Pacific Basin [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961634

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Published: 2023-08-18 • DOI registered: 2023-08-18

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Abstract:
Initial attempts to classify the composition of manganese nodules in the Pacific Ocean illustrated the paucity of data for the Southwestern Pacific Basin. Recent major element analyses of 16 manganese nodules from different stations in the Southwestern Pacific Basin collected during the 1974 R. V. Tangaroa cruise are presented. They have shown high contents of elements associated with the silicate phase of nodules (36—54% as oxides on a dry weight basis). The high contents o f the elements may be due to the incomplete replacement of the volcanic nuclei of the nodules by iron-manganese oxides in the initial stages of nodule formation. Some elements (e.g. Na, Mg, Si and Ti) show particularly wide variations in composition in these nodules. Chemical analyses were performed on bulk nodule samples (including nucleus) using X-ray fluorescence spectrometry. Samples were ground in a SFEX mill grinder and ignited at 1000°C in a Pt crucible to drive off volatiles. They were then reduced to a glass bead and reground for analysis.
Keyword(s):
Geochemistry; manganese micronodule; manganese nodule; ocean; sediment
Related to:
Glasby, Geoffrey P; Meylan, Maurice A; Margolis, Stanley V; Bäcker, Harald (1980): Manganese deposits of the Southwestern Pacific Basin. In: Varentsov, IM & Grasselly, G (eds.), Geology and Geochemistry of Manganese, Proceedings of the 2nd International Symposium on Geology and Geochemistry of Manganese, 7-24
Source:
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
Further details:
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
Project(s):
NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)
Coverage:
Median Latitude: -25.125417 * Median Longitude: -161.311665 * South-bound Latitude: -27.651670 * West-bound Longitude: -163.683330 * North-bound Latitude: -22.418330 * East-bound Longitude: -160.015000
Date/Time Start: 1974-05-13T00:00:00 * Date/Time End: 1974-05-21T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
TANG22-G992A * Latitude: -24.355000 * Longitude: -163.683330 * Date/Time: 1974-05-13T00:00:00 * Elevation: -5440.0 m * Location: South Pacific Ocean * Campaign: NZOI-Tangaroa_22 * Basis: Tangaroa (1960) * Method/Device: Dredge (DRG) * Comment: Institute: NIWA
TANG22-G995 * Latitude: -22.418330 * Longitude: -161.483330 * Date/Time: 1974-05-15T00:00:00 * Elevation: -4715.0 m * Location: South Pacific Ocean * Campaign: NZOI-Tangaroa_22 * Basis: Tangaroa (1960) * Method/Device: Dredge (DRG) * Comment: Institute: NIWA
TANG22-G1006B * Latitude: -26.076670 * Longitude: -160.065000 * Date/Time: 1974-05-21T00:00:00 * Elevation: -5116.0 m * Location: South Pacific Ocean * Campaign: NZOI-Tangaroa_22 * Basis: Tangaroa (1960) * Method/Device: Dredge (DRG) * Comment: Institute: NIWA
Comment:
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 VIII, pp. 158, of the related publication.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventGlasby, Geoffrey P
2Latitude of eventLatitudeGlasby, Geoffrey P
3Longitude of eventLongitudeGlasby, Geoffrey P
4Elevation of eventElevationmGlasby, Geoffrey P
5IdentificationIDGlasby, Geoffrey P
6Deposit typeDeposit typeGlasby, Geoffrey P
7DEPTH, sediment/rockDepth sedmGlasby, Geoffrey PGeocode
8ManganeseMn%Glasby, Geoffrey PElectron microprobe (EMP)
9IronFe%Glasby, Geoffrey PElectron microprobe (EMP)
10NickelNi%Glasby, Geoffrey PElectron microprobe (EMP)
11CopperCu%Glasby, Geoffrey PElectron microprobe (EMP)
12CobaltCo%Glasby, Geoffrey PElectron microprobe (EMP)
13TitaniumTi%Glasby, Geoffrey PElectron microprobe (EMP)
14ZincZn%Glasby, Geoffrey PElectron microprobe (EMP)
15AluminiumAl%Glasby, Geoffrey PElectron microprobe (EMP)
16CalciumCa%Glasby, Geoffrey PElectron microprobe (EMP)
17SiliconSi%Glasby, Geoffrey PElectron microprobe (EMP)
18PotassiumK%Glasby, Geoffrey PElectron microprobe (EMP)
19MagnesiumMg%Glasby, Geoffrey PElectron microprobe (EMP)
20ShapeShapeGlasby, Geoffrey PShape of manganese nodules
21TextureTextureGlasby, Geoffrey PSurface texture of manganese nodules
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
483 data points

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