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  • Data  (3)
  • NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS  (3)
  • 1980-1984  (2)
  • 1935-1939  (1)
  • 1981  (2)
  • 1936  (1)
Collection
  • Data  (3)
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Years
  • 1980-1984  (2)
  • 1935-1939  (1)
Year
  • 1
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    Unknown
    Description and iron and manganese content of ferromanganese nodules from Oneida Lake, NY (1981)
    PANGAEA
    In:  Supplement to: Moore, Willard S (1981): Iron-manganese banding in Oneida Lake ferromanganese nodules. Nature, 292(5820), 233-235, https://doi.org/10.1038/292233a0
    Details
    Publication Date: 2023-08-28
    Description: Ferromanganese nodules in the deep-sea and in freshwater lakes usually accrete layers rich in manganese oxides alternating with layers rich in iron oxides. The mechanism producing these alternating layers is unknown; indeed, the mechanism producing the nodules themselves is unknown. In Oneida Lake, New York, precipitants from the lake water and the surfaces of nodules at the sediment-water interface are enriched in Mn, whereas nodules buried in lake sediments have surface layers enriched in Fe. It is hypothesized here, using field and laboratory evidence, that reduction and mobilization of Mn from the nodule surface during periods of anoxic sediment cover produce the high Fe layers observed in the nodules.
    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
    Chemical composition of manganese nodule samples from the North Pacific Ocean (1981)
    PANGAEA
    In:  Supplement to: Bischoff, James L; Piper, David Z; Leong, Kam (1981): The aluminosilicate fraction of North Pacific manganese nodules. Geochimica et Cosmochimica Acta, 45(11), 2047-2063, https://doi.org/10.1016/0016-7037(81)90059-4
    Details
    Publication Date: 2023-08-28
    Description: Nine nodules collected from throughout the deep North Pacific were analyzed for their mineralogy and major-element composition before and after leaching with Chester-Hughes solution. Data indicate that the mineral phillipsite accounts for the major part (〉 75%) of the aluminosilicate fraction of all nodules. It is suggested that formation of phillipsite takes place on growing nodule surfaces coupled with the oxidation of absorbed manganous ion. All the nodules could be described as ternary mixtures of amorphous iron fraction (Fe-Ti-P), manganese oxide fraction (Mn-Mg Cu-Ni), and phillipsite fraction (Al-Si-K-Na), these fractions accounting for 96% of the variability of the chemical composition.
    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
  • 3
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    Unknown
    Occurrence and geochemistry of lake-bottom manganiferous deposits in Canadian lakes (1936)
    PANGAEA
    In:  Supplement to: Kindle, Edward Martin (1936): The occurrence of lake-bottom manganiferous deposits in Canadian lakes. Economic Geology, 31(7), 755-760, https://doi.org/10.2113/gsecongeo.31.7.755
    Details
    Publication Date: 2023-08-28
    Description: It is the purpose of this paper to record information concerning the distribution and occurrence of manganiferous concretions and other manganese oxide deposits that develop on certain lake bottoms. During the summer of 1935 several days were devoted to a study of this type of lake bottom deposit in various parts of Nova Scotia. Lake studies in Ontario have extended the known distribution from lakes on or near the Atlantic coast to lakes in southern Ontario. During the writer's first work on lacustrine manganiferous deposits the concretions of manganese oxide which were found were almost entirely limited to the relatively shallow parts of the lakes examined. Other lakes are now known where the manganese oxide appears to occur only in the maximum depths.
    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
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