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Bischoff, James L; Piper, David Z; Leong, Kam (1981): Chemical composition of manganese nodule samples from the North Pacific Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.880308, Supplement to: Bischoff, JL et al. (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

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Abstract:
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.
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: 23.099118 * Median Longitude: -148.421082 * South-bound Latitude: 6.827000 * West-bound Longitude: -174.022000 * North-bound Latitude: 36.013000 * East-bound Longitude: -113.968000
Date/Time Start: 1972-04-01T00:00:00 * Date/Time End: 1976-10-01T00:00:00
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Bischoff, JL; Piper, DZ; Leong, K (1981): (Table 5, page 2052) Chemical composition of bulk manganese nodule samples from the North Pacific Ocean. https://doi.org/10.1594/PANGAEA.880305
  2. Bischoff, JL; Piper, DZ; Leong, K (1981): (Table 6, page 2052) Chemical composition of Chester-Hughes acid-reducing leachates of manganese nodule samples from the North Pacific Ocean. https://doi.org/10.1594/PANGAEA.880306
  3. Bischoff, JL; Piper, DZ; Leong, K (1981): (Table 8, page 2053) Chemical composition of insoluble residues from Chester-Hughes acid-reducing leaching of manganese nodule samples from the North Pacific Ocean. https://doi.org/10.1594/PANGAEA.880307