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Leclaire, Lucien; Perseil, E A (1979): (Table 1, page 24), Geochemical cmposition of nodules and crust from the Indain Ocean recovered from R/V Marion Dufresne expeditions. PANGAEA, https://doi.org/10.1594/PANGAEA.855460, Supplement to: Leclaire, L; Perseil, EA (1979): Minéralogie, composition chimique et milieux de sédimentation de concrétions polymétalliques dans l'océan Indien = Mineralogy, chemical composition and sedimentation environment of manganese nodules from Indian Ocean. In: Lalou, C (Ed) La Genèse des nodules de manganèse. Centre National de la recherche Scientifique (CNRS), Gif-sur-Yvette, France, 23-37, hdl:10013/epic.46398.d001

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Abstract:
Mineralogical analysis of manganese nodules and crusts collected from Indian ocean aboard Marion Dufresne points to a depth and regional control upon the manganese oxide association: vernadite - birnessite and vernadite - todorokite. Moreover, progressive changes in the vernadite/birnessite ratio as a function of time is clearly seen. Magnetite and titano-magnetite in quantities similar to those of framboidal pyrite in manganese nodules are outlined for the first time. Study of the distribution of metals (Mn, Fe, Ni, Cu, Co) shows a strong latitudinal and regional dependence that may be connected to high productivity zones and to bottom water properties. The problem of mineralogical control on the chemical composition is approached. Finally, it results that any interpretations taking into account all these data haveway to give to the variability of sea-water properties (pH, oxygenation, motions) the prominent control upon manganese nodules composition.
Source data set:
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
Coverage:
Median Latitude: -30.035114 * Median Longitude: 62.033449 * South-bound Latitude: -47.275000 * West-bound Longitude: 27.013333 * North-bound Latitude: -11.916670 * East-bound Longitude: 78.950000
Date/Time Start: 1973-05-28T00:00:00 * Date/Time End: 1977-09-01T00:00:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 0.860 m
Event(s):
MD09-06B (AT760004) * Latitude: -30.783330 * Longitude: 48.250000 * Date/Time: 1976-03-05T00:00:00 * Elevation: -4192.0 m * Recovery: 1 m * Location: Indian Ocean * Campaign: MD09 (SESAM) * Basis: Marion Dufresne * Device: Piston corer (PC)
MD09-12B (AT760005) * Latitude: -32.633330 * Longitude: 50.783330 * Date/Time: 1976-11-05T00:00:00 * Elevation: -4395.0 m * Recovery: 1 m * Location: Indian Ocean * Campaign: MD09 (SESAM) * Basis: Marion Dufresne * Device: Piston corer (PC)
MD09-21B (AT760007) * Latitude: -38.700000 * Longitude: 61.266670 * Date/Time: 1976-05-15T00:00:00 * Elevation: -5272.0 m * Recovery: 1 m * Location: Indian Ocean * Campaign: MD09 (SESAM) * Basis: Marion Dufresne * Device: Piston corer (PC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventLeclaire, Lucien
2Latitude of eventLatitudeLeclaire, Lucien
3Longitude of eventLongitudeLeclaire, Lucien
4Elevation of eventElevationmLeclaire, Lucien
5Sample code/labelSample labelLeclaire, Lucien
6IdentificationIDLeclaire, Lucien
7DEPTH, sediment/rockDepthmLeclaire, LucienGeocode
8AluminiumAl%Leclaire, LucienWet chemistry
9CalciumCa%Leclaire, LucienWet chemistry
10MagnesiumMg%Leclaire, LucienWet chemistry
11ManganeseMn%Leclaire, LucienWet chemistry
12IronFe%Leclaire, LucienWet chemistry
13CopperCu%Leclaire, LucienWet chemistry
14NickelNi%Leclaire, LucienWet chemistry
15CobaltCo%Leclaire, LucienWet chemistry
16ZincZn%Leclaire, LucienWet chemistry
17LeadPb%Leclaire, LucienWet chemistry
18Silicon dioxideSiO2%Leclaire, LucienWet chemistry
19Insoluble residueInsol res%Leclaire, LucienWet chemistry
20DescriptionDescriptionLeclaire, Lucienpart of sample analysed
Size:
652 data points

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