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  • NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS  (3)
  • Actinocythereis cf. scutigera; Actinocythereis sp.; Aglaiocypris sp.; Alocopocythere reticulata; Atjehella aff. semiplicata; Bairdoppillata sp.; Brachycythere sp.; Bythoceratina sp.; Callistocythere cf. flavidofusca intricatoides; Carinocythereis cf. hammata; Carinocythereis sp.; Chrysocythere sp.; Cythere cf. cribriformis; Cythere cf. papuensis; Cytherella cf. pulchra; Cytherelloidea sp.; Cytheroma dimorpha; Cytheroma sp.; DEPTH, sediment/rock; Elevation of event; Event label; GIK/IfG; GIK01056; GIK01058; GIK01074; GIK01082; GIK01083; GIK01084; GIK01085; GIK01086; GIK01087; GIK01088; GIK01096; GIK01143; GIK01153; GIK01172; GIK01173; GIK01174; GIK01190; GIK01191; GIK01194; GIK01197; GIK01198; GIK01199; Gravity corer (Kiel type); Hemicytheridea sp.; Hemikrithe sp.; Hemitrachyleberis sp.; Hulingsina sp.; IIOE - International Indian Ocean Expedition; Institute for Geosciences, Christian Albrechts University, Kiel; KAL; Kasten corer; Keijella sp.; Krithe sp.; Latitude of event; Longitude of event; Loxoconcha sp.; M1; M1_251; M1_253; M1_269; M1_277; M1_278 01083-B; M1_279 01084-B; M1_280A; M1_280B; M1_280C 01087-B; M1_281 01088-C; M1_289 01096-B; M1_330B 01143-B; M1_339 11053-1; M1_351; M1_352 01173-C; M1_353 01174-B; M1_368 01190-C; M1_369; M1_372; M1_375; M1_376 01198-B; M1_377 01199-G; Meteor (1964); Microcythere sp.; Moosella sp.; Neomonceratina sp.; Persian Gulf; Phlyctocythere sp.; Propontocypris sp.; Pseudocythere sp.; Quadracythere sp.; Ruggieria (Ruggieria) sp.; Ruggieria darwinii; SL
  • PANGAEA  (3)
  • American Chemical Society
  • Nature Publishing Group
  • Periodicals Archive Online (PAO)
  • 1975-1979
  • 1970-1974  (3)
  • 1970  (3)
Collection
Keywords
Publisher
  • PANGAEA  (3)
  • American Chemical Society
  • Nature Publishing Group
  • Periodicals Archive Online (PAO)
Years
  • 1975-1979
  • 1970-1974  (3)
Year
  • 1
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    Description and chemical composition of manganese nodules collected in the Pacific Ocean (1970)
    PANGAEA
    In:  Supplement to: Okada, Akihiko; Shima, Makoto (1970): Study on the manganese nodule (in Japanese). Journal of Oceanographical Society of Japan, 26(3), 151-158, https://www.jstage.jst.go.jp/article/kaiyou1942/26/3/26_3_151/_article
    Details
    Publication Date: 2023-08-28
    Description: Chemical and X-ray analyses were performed on the fifteen manganese nodules collected from the Pacific Ocean floor. The results were discussed compared with the previous data on the manganese nodules. Minerals were found to be todorokite, delta-MnO2 and other silicates, montmorillonite, illite, phillipsite and alpha-Si02. Average composition shows that copper is concentrated on the deep sea nodules more than the shallow ones, and that the todorokite rich nodules contain more copper and nickel than the delta-MnO2 rich ones. The analyses of fresh water iron-manganese precipitates by bacterial activity suggest that biological process is one of the important factors on the genesis of the sedimentary iron-manganese deposits, in¬cluding the manganese nodule.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Geochemistry on manganese nodules from Loch Fyne, Scotland (1970)
    PANGAEA
    In:  Supplement to: Calvert, Stephen E; Price, N B (1970): Composition of manganese nodules and manganese carbonates from Loch Fyne, Scotland. Contributions to Mineralogy and Petrology, 29(3), 215-233, https://doi.org/10.1007/BF00373306
    Details
    Publication Date: 2023-08-28
    Description: Manganese nodules and manganese carbonate concretions occur in the upper 10-15 cm of the Recent sediments of Loch Fyne, Argyllshire in water depths of 180-200 m. The nodules are spherical, a few mm to 3 cm in diameter, and consist of a black, Mn-rich core and a thin, red, Fe-rich rim. The carbonate occurs as irregular concretions, 0.5-8 cm in size, and as a cement in irregular nodule and shell fragment aggregates. It partially replaces some nodule material and clastic silicate inclusions, but does not affect aragonitic and calcitic shell fragments. The nodules are approximately 75% pure oxides and contain 30% Mn and 4% Fe. In the cores, the principal mineral phase is todorokite, with a Mn/Fe ratio of 17. The rim consists of X-ray amorphous Fe and Mn oxides with a Mn/Fe ratio of 0.66. The cores are enriched, relative to Al, in K, Ba, Co, Mo, Ni and Sr while the rims contain more P, Ti, As, Pb, Y and Zn. The manganese carbonate has the composition (Mn47.7 Ca45.1 Mg7.2) CO3. Apart from Cu, all minor elements are excluded from significant substitution in the carbonate lattice. Manganese nodules and carbonates form diagenetically within the Recent sediments of Loch Fyne. This accounts for the high Mn/Fe ratios in the oxide phases and the abundance of manganese carbonate concretions. Mn concentrations in the interstitial waters of sediment cores are high (ca. 10 ppm) as also, by inference, are the dissolved carbonate concentrations.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Unknown
    Annotated record and chemical composition of Mn deposits from R/V Mahi Cruise Abyssal Hills 69 stations (1970)
    PANGAEA
    In:  Supplement to: Hubred, Gale Lee (1970): Relationship of morphology and transition metal content of manganese nodules to an Abyssal Hill. M.Sc. thesis, University of Hawaii, Honolulu, Hawaii, U.S.A., 38 pp, https://epic.awi.de/41788/
    Details
    Publication Date: 2023-08-28
    Description: A University of Hawaii oceanographic cruise, Abyssal Hills 69, with the R/V Mahi, was carried out to study the association of manganese nodules with an abyssal hill. Manganese nodules from three dredge hauls on an abyssal hill located at 36°W and 157°W exhibited differences in morphology and composition between stations only three miles apart. The morphology of the nodules suggests that nodules from a single site have similar morphologies because they began growth at the same time, probably because of a volcanic event. Differences in morphology between stations indicate a local supply of elements. Atomic absorption analysis for manganese, iron, cobalt, nickel, and copper revealed that nodules nearest to a probable fault line and source of volcanism have a, lower manganese to iron ratio than nodules farther removed. This finding supports the theory that volcanism contributes to the formation of some nodules. Additional evidence showing association with volcanism consists of volcanic nuclei in nodules, crusts formed on layers of volcanic ash, and basalt encrusted to various degrees. The variation in cobalt, nickel, and copper contents Gt the nodules from a single dredge is two-to threefold, but iron content is more uniiorm. Four of the six cores from the area increased in manganese concentration with depth, suggesting that diffusion is concentrating manganese in the upper zone of the sediments or in nodules. The author concludes that volcanism is contributing to the formation of nodules by supplying nuclei and transition elements, but is not necessary for the formation of manganese nodules.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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