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  • NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS  (5)
  • PANGAEA  (5)
  • Cambridge University Press
  • 2025-2025
  • 2005-2009
  • 1980-1984
  • 1975-1979  (5)
  • 1950-1954
  • 1979  (5)
  • 1954
Collection
Keywords
Publisher
  • PANGAEA  (5)
  • Cambridge University Press
Years
  • 2025-2025
  • 2005-2009
  • 1980-1984
  • 1975-1979  (5)
  • 1950-1954
Year
  • 1
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    Manganese nodule and surface sediment compositions: DOMES sites A, B, and C (1979)
    PANGAEA
    In:  Supplement to: Piper, David Z; Leong, Kam; Cannon, William F (1979): Manganese nodule and surface sediment compositions: domes sites A, B, and C. in: Bischoff, J.L. (ed.), Marine Geology and Oceanography of the Pacific Manganese Nodule Province, Marine Science. Plenum Publishing Corporation, New York, U.S.A., 437-474, https://store.pangaea.de/Projects/NOAA-MMS/chp_10.1007_978-1-4684-3518-4_13.pdf
    Details
    Publication Date: 2023-08-28
    Description: Manganese nodules and associated sediment from the equatorial North Pacific have been examined to ascertain relations between nodule abundance, texture, and composition, and sediment composition, lithology and acoustic stratigraphy. Nodules are most abundant in areas where the uppermost acoustically transparent layer of sediment is less than approximately 15 m thick. Abundance drops off sharply in areas where this acoustic unit is thicker than 20 m. Nodules have average Zn/Mn and Co/Mn ratios which are approximately the same as these ratios for the component of sediment soluble in hydroxylamine hydrochloride-acetic acid. The relations between Cu and Mn and Ni and Mn in the sediment are also approximately the same as in nodules, but only for those nodules which have a smooth surface texture. Granular nodules have relatively more Ni and Cu. Antimony in nodules, similar to Ni, Cu, and Zn, is strongly correlated with Mn, whereas Co, Hf, Th, and U are strongly correlated with Fe. The insoluble component of sediment has a uniform composition which is similar to the composition of terrigenous shale. This similarity holds for the major oxides as well as for Co, Cr, Zn, Hf, Sb, Th, U, Sc, Cs, Rb, and Ta.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 2
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    Chemical composition of the soluble fraction of oxidate portions of Lakes Shebadnowan ferromanganese concretions (1979)
    PANGAEA
    In:  Supplement to: Sozanski, Andrew George; Cronan, David S (1979): Ferromanganese concretions in Shebandowan Lakes, Ontario. Canadian Journal of Earth Sciences, 16(1), 126-140, https://doi.org/10.1139/e79-012
    Details
    Publication Date: 2023-08-28
    Description: Shebandowan Lakes, Ontario, are the site of at least 49 shallow (2-12 m) ferromanganese concretion deposits, widely distributed throughout the 48 km of the watercourse. X-ray diffraction and Mossbauer methods have revealed the presence of goethite in some of the concretions. Chemical analyses of the acid soluble portions of 72 samples gave an average composition of 43.1% Fe and 5.65% Mn with a low content of trace elements. The Shebandowan concretions are among the richest in iron of lake concretions reported, possibly because only the acid soluble portion was analysed. Their low content of trace elements suggests rapid growth rates and a relatively young age. A positive correlation was found between Mn and K, Ca, Mg, Cu, Ni, and Co and the relationship between the last three and Mn was deemed significant. Zn was independent of association with either Mn and Fe, probably due to the presence locally of zinc sulphide deposits. Analyses of lake bottom and influent waters suggested that frequent resampling of the sites would be required throughout the year to permit meaningful interpretation of the effect of water composition of concretions. Analyses of sediment cores from 20 concretion sites indicated an upward increase in Fe and Mn and in the Mn/Fe ratio, consistent with the model of upward migration of the elements, where Mn is more mobile than Fe. This study concludes that a considerable proportion of the elements have been supplied to the Shebandowan concretions via the diagenetic process; generally a minor fraction of the elements has been abstracted directly from the superjacent water.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 3
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    Metal content of nodules determined by Deepsea Ventures, Inc. with different methods (1979)
    PANGAEA
    In:  Supplement to: SCRIPPS Institution of Oceanography (1979): Analyses done by Deepsea Ventures, Inc of manganese nodules and crusts from the Scripps Institution of Oceanography (private communication). unpublished
    Details
    Publication Date: 2023-08-28
    Description: Information on possible resource value of sea floor manganese nodule deposits in the Pacific has been assessed by Deepsea ventures Inc, from the collection of manganese nodules and crusts obtained during past research vessels' cruise from the Scripps Institution of Oceanography.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 4 datasets
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    DATA PANGAEA
  • 4
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    Chemical composition of manganese nodules from the Pacific Ocean (1979)
    PANGAEA
    In:  Supplement to: Banning, Davey Lee (1979): Variations of certain transition elements in the oxides in marine manganese nodules (MS thesis). Washington State University, Pullman, Washington, U.S.A., https://download.pangaea.de/reference/92495/attachments/Banning_1979.pdf
    Details
    Publication Date: 2023-08-28
    Description: Manganese nodules from six Pacific Ocean sites contain two chief oxide components which can be distinguished by both optical and X-ray diffraction methods. Optically coordinated electron microprobe spot analyses reveal that copper and nickel are concentrated in the manganese-rich crystalline oxides (birnessite and todorokite) while cobalt is concentrated in the iron-rich amorphous oxides. In the nodules studied the maximum nickel content in the crystalline material is 3.6%, while the maximum copper content is 2.95%. The highest cobalt content found in the amorphous material was 0.74%. Large variations in concentrations were found within individual nodule layers as well as from one layer to another. Most of the variations cannot be accounted for by admixed nodule components. The variations cannot be distinguished by any optical or X-ray diffraction criteria and are probably controlled by the availability of the elements during primary deposition. There does not appear to be any linear interelement relationship between concentrations of the major elements (Mn and Fe) and the minor elements (Ni, Cu and Co). Linear relationships that have been reported in the past must be interpreted with care, for crystalline oxides and amorphous oxides may have been mixed in varying amounts during the sampling. In view of the different element associations in the crystalline and the amorphous oxides, the main factor for controlling bulk chemical analysis of a particular nodule appears to be the ratio of crystalline to amorphous material in the nodule. NSF-IDOE support of this research is acknowledged with thanks.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 5
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    Description, main morphological features and bulk chemical analysis of Mn deposits from DOMES sites in the Pacific Ocean (1979)
    PANGAEA
    In:  Supplement to: Sorem, Ronald K; Reinhart, W R; Fewkes, Ronald H; McFarland, William Douglas (1979): Occurence and character of manganese nodules in DOMES areas A, B, and C, East Equatorial Pacific Ocean. in: Bischoff, J.L., Piper, D.Z. (Eds.), Marine Geology and Oceanography of the Pacific Manganese Nodule Province, Marine Science. Plenum Publishing Corporation, New York, U.S.A., 475-528, https://doi.org/10.1007/978-1-4684-3518-4_14
    Details
    Publication Date: 2023-08-28
    Description: Study of the occurrence and physical and chemical character of manganese nodules collected in box cores in DOMES Sites A, B, and C indicates that virtually all nodules lie at the sediment-water interface. Buried nodules are rare. Nodules seem to be smaller and have smoother surfaces at Site A than at Sites B and C. Site C nodules are predominantly 2-6 cm in size and have smooth tops and granular bottoms. Nodules from all sites show non-uniform contents of Mn, Fe, Ni and Cu within individual box cores. The greatest variations were found in box cores from Sites A and C. Mn, Ni, and Cu are generally covariant whereas Fe content is antithetic to Mn content. Large variations in metal content are generally due to differences in oxide mineralogy but some variation is related to clay content. Large nodules tend to be relatively low in Mn, Ni, and Cu. Site B nodules have the highest mean values for Mn, Ni, and Cu and the lowest mean Fe content. Site C nodules and Site A nodules have the same Mn content, but Site C nodules are richer in Ni and poorer in Fe than Site A nodules.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
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