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Varentsov, Igor M; Michailova, R M (1972): (Fig 2, page 399), Distribution of Fe and Mn in ferromanganese nodules of the Eningi-Lampi Lake, Russia. PANGAEA, https://doi.org/10.1594/PANGAEA.855186, Supplement to: Varentsov, Igor M (1972): On the main aspects of formation of ferromanganese ores in recent basins (lakes). In: Proc. 24th Intl. Geol. Congr., presented at the Mineral Deposits Symposium, 24th International Geological Congress (Montreal), Sect 4, 395-403, hdl:10013/epic.46330.d001

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Abstract:
The distribution of Mn and Fe in water, sediments, hydroxide nodules and crusts of Eningi-Lampi ore-bearing lake is regular, and concordant from the source to the areas of accumulation of these components. Mn-Fe hydroxide nodules and crusts occur at the water-sediment interface, and more rarely in the upper (0-5 cm) film of brown watery mud. The leading role in the formation of Mn-Fe nodules and crusts is played by the chemosorption and auto-catalytic oxidation in the course of interaction of component-bearing solutions with active surfaces. This is considered to be the basic process for the model of ferromanganese ore formation in recent basins. Despite the differences in the physico-geographical and geochemical characteristics of lakes, mediterranean seas and oceans, the formation of ferromanganese hydroxide nodules and crusts in these basins may be explained by this model.
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
Coverage:
Median Latitude: 63.085765 * Median Longitude: 33.229912 * South-bound Latitude: 63.069850 * West-bound Longitude: 33.189940 * North-bound Latitude: 63.119070 * East-bound Longitude: 33.267210
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
EningiLampi_99 * Latitude: 63.118340 * Longitude: 33.189940 * Elevation: 137.0 m * Lake water depth: 2 m * Location: Lake Eningi-Lampi, Russia * Method/Device: Dredge (DRG)
EningiLampi_104 * Latitude: 63.070000 * Longitude: 33.248980 * Elevation: 137.0 m * Lake water depth: 2 m * Location: Lake Eningi-Lampi, Russia * Method/Device: Dredge (DRG)
EningiLampi_116 * Latitude: 63.100860 * Longitude: 33.201640 * Elevation: 137.0 m * Lake water depth: 1 m * Location: Lake Eningi-Lampi, Russia * Method/Device: Dredge (DRG)
Comment:
Only the Fe-Mn rich parts of the nodules have been analysed excluding their foreign cores.
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.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventMichailova, R M
2Latitude of eventLatitudeMichailova, R M
3Longitude of eventLongitudeMichailova, R M
4Elevation of eventElevationmMichailova, R M
5DEPTH, sediment/rockDepth sedmMichailova, R MGeocode
6ManganeseMn%Michailova, R MSpectrophotometric
7IronFe%Michailova, R MSpectrophotometric
Size:
34 data points

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