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Fein, Charles D; Morgenstein, Maury (1973): (Table 1, page 86) Chemical composition of ferromanganese crusts from the Waho Shelf, Hawaii Islands. PANGAEA,, Supplement to: Fein, CD; Morgenstein, M (1973): Microprobe analysis of manganese crusts from the Hawaiian Archipelago. 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 - (pdf 733 kB), 85-92,

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Quantitative and qualitative chemical analyses were performed on fourteen manganese nodules and crusts from the Waho Shelf. The analyses showed that submarine weathering has leached several elements, notably Si02, A1203, Na20, CaO and MnO from the hydrated glass surrounding the basaltic seeds of the nodules. The altered glass was enriched in Ti02, MgO, K2O and total Fe. The manganese bands formed on the altered glass were further depleted in Si02, Al203, and similar to the hydrated glass in Na2O and CaO content. The manganese-enriched zones also showed higher TiO2 and NiO than the basaltic seeds, and higher total Fe than pelagic nodules from the North Pacific. Qualitative measurement of Cu, Ni, and Co, showed relative enrichment in the manganese bands. A proposed model for manganese accretion in the Waho Shelf incorporates local submarine weathering of basalts, redistribution of Mn in marine sediments, and an influx of Mn "rain" on the sea floor.
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,
Further details:
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA,
Median Latitude: 21.776111 * Median Longitude: -158.617222 * South-bound Latitude: 21.616667 * West-bound Longitude: -158.803333 * North-bound Latitude: 21.925000 * East-bound Longitude: -158.345000
Date/Time Start: 1971-10-19T00:00:00 * Date/Time End: 1972-05-05T00:00:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
TE6-1RD * Latitude: 21.616667 * Longitude: -158.688333 * Date/Time: 1971-10-19T00:00:00 * Elevation: -1680.0 m * Location: Hawaii islands * Campaign: Kauai_Sediments-Exped * Basis: Teritu * Device: Dredge (DRG) * Comment: Kauai Sediments-6
TE7-3RD * Latitude: 21.925000 * Longitude: -158.550000 * Date/Time: 1972-05-04T00:00:00 * Elevation: -1330.0 m * Location: Hawaii islands * Campaign: Kauai_Sediments-Exped * Basis: Teritu * Device: Dredge (DRG) * Comment: Kauai Sediments-7
TE7-4RD * Latitude: 21.833333 * Longitude: -158.616667 * Date/Time: 1972-05-05T00:00:00 * Elevation: -1255.0 m * Location: Hawaii islands * Campaign: Kauai_Sediments-Exped * Basis: Teritu * Device: Dredge (DRG) * Comment: Kauai Sediments-7
Allowance for H2O was made by deduction from other chemical elements assay
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventFein, Charles D
2Latitude of eventLatitudeFein, Charles D
3Longitude of eventLongitudeFein, Charles D
4Elevation of eventElevationmFein, Charles D
5IdentificationIDFein, Charles D
6DEPTH, sediment/rockDepthmFein, Charles DGeocode
7Silicon dioxideSiO2%Fein, Charles DElectron microprobe
8Aluminium oxideAl2O3%Fein, Charles DElectron microprobe
9Titanium dioxideTiO2%Fein, Charles DElectron microprobe
10Magnesium oxideMgO%Fein, Charles DElectron microprobe
11Calcium oxideCaO%Fein, Charles DElectron microprobe
12Sodium oxideNa2O%Fein, Charles DElectron microprobe
13Potassium oxideK2O%Fein, Charles DElectron microprobe
14Iron oxide, FeOFeO%Fein, Charles DElectron microprobe
15Manganese oxideMnO%Fein, Charles DElectron microprobe
16Chromium(III) oxideCr2O3%Fein, Charles DElectron microprobe
17Nickel oxideNiO%Fein, Charles DElectron microprobe
18Water in rockH2O%Fein, Charles DCalculated
19Deposit typeDeposit typeFein, Charles D
20ZoneZoneFein, Charles D
21DescriptionDescriptionFein, Charles D
176 data points

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