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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,, 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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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 data set:
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,
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
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)
EningiLampi_117 * Latitude: 63.096440 * Longitude: 33.204410 * Elevation: 137.0 m * Lake water depth: 2 m * Location: Lake Eningi-Lampi, Russia * Method/Device: Dredge (DRG)
Only the Fe-Mn rich parts of the nodules have been analysed excluding their foreign cores.
#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/rockDepthmMichailova, R MGeocode
6ManganeseMn%Michailova, R MSpectrophotometric
7IronFe%Michailova, R MSpectrophotometric
34 data points

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