Callender, Edward (1973): Geochemistry on ferromanganese crusts and nodules from Green Bay, Lake Michigan [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.848116, Supplement to: Callender, E (1973): Geochemistry of ferromanganese crusts, manganese carbonate crusts and associated ferromanganese nodules from Green Bay, Lake Michigan. In: Phase I Report - Inter-University Program of Research on Ferromanganese Deposits of the Ocean Floor. Seabed Assessment Program, IDOE, NSF, Washington D.C., USA; http://hdl.handle.net/2027/wu.89033915380, 105-120, hdl:10013/epic.45790.d006
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Abstract:
The differential solubility of ferromanganese oxides can lead to stratigraphic separation of iron and manganese. Results of chemical analysis of a sequence of ferromanganese nodules overlying iron-rich crusts in northern Green Bay show that selec¬tive ion transport is important in concentrating manganese and associated trace elements near the oxygenated water-sediment interface. Manganese carbonate, which cements ferromanganese nodules, occurs in dark-gray silty sands that are located adjacent to the organic-rich muds of southern Green Bay. These muds contain an average of approximately 3.5 ppm (6x10-5M) interstitial Mn with 2.8 meq/l carbonate alkalinity. Thermodynamic calculation shows that interstitial water approaches equilibrium with MnCO3 in the upper 10 cm of sediment. This carbonate has a composition (Mn73Ca22Fe5)CO3 and has been identified as rhodochrosite.
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
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Coverage:
Median Latitude: 45.245972 * Median Longitude: -87.354326 * South-bound Latitude: 44.871101 * West-bound Longitude: -87.750315 * North-bound Latitude: 45.664370 * East-bound Longitude: -86.763271
Event(s):
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
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Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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Datasets listed in this publication series
- Callender, E (1973): (Table, page 113) Chemical composition of ferromanganese crusts and ferromanganese nodules from Green Bay, Lake Michigan. https://doi.org/10.1594/PANGAEA.848109
- Callender, E (1973): (Table 4, page 110) Chemical composition of ferromanganese crusts and associated nodules from station UM-GB-71-108. https://doi.org/10.1594/PANGAEA.848100
- Callender, E (1973): (Table 8, page 113) Chemical composition of ferromanganese crusts and associated nodules from station UM-GB-71-19. https://doi.org/10.1594/PANGAEA.848102