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Glasby, Geoffrey P; Meylan, Maurice A; Margolis, Stanley V; Bäcker, Harald (2023): Electron microprobe analysis of selected manganese nodules from the Southwestern Pacific Basin [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961669

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Published: 2023-08-18 • DOI registered: 2023-08-18

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Abstract:
Four manganese nodules collected south and southwest of Rarotonga one of the Cook Islands were subjected to microprobe analysis in order to determine variations in chemical composition between the concentric laminations making up the nodules. Nodules of maximum diameter of about 2.5 cm or less were selected so that the entire nodule could be sectioned for one probe mount. Probe mounts were prepared by vacuum embedding in cold-setting, clear-casting resin. Cutting and polishing were then performed using standard polished section techniques. The electron microprobe mounts were examined with a reflected light microscope in the microprobe, and 2 micrometer spots were selected for analysis along a line of traverse going through the centre (nucleus) of the nodule. Due to the fact that optically-reflective metal-rich layers were selected for analysis and darker detrital inclusions and silicate-rich layers were not analysed here the microprobe values are generally higher for Mn, Ni, Cu and Co, and lower for Fe, than the bulk chemical analyses.
Keyword(s):
Geochemistry; manganese micronodule; manganese nodule; ocean; sediment
Related to:
Glasby, Geoffrey P; Meylan, Maurice A; Margolis, Stanley V; Bäcker, Harald (1980): Manganese deposits of the Southwestern Pacific Basin. In: Varentsov, IM & Grasselly, G (eds.), Geology and Geochemistry of Manganese, Proceedings of the 2nd International Symposium on Geology and Geochemistry of Manganese, 7-24
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: -25.125418 * Median Longitude: -161.311665 * South-bound Latitude: -27.651670 * West-bound Longitude: -163.683330 * North-bound Latitude: -22.418330 * East-bound Longitude: -160.015000
Date/Time Start: 1974-05-13T00:00:00 * Date/Time End: 1974-05-21T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
TANG22-G992A  * Latitude: -24.355000 * Longitude: -163.683330 * Date/Time: 1974-05-13T00:00:00 * Elevation: -5440.0 m * Location: South Pacific Ocean * Campaign: NZOI-Tangaroa_22 * Basis: Tangaroa (1960) * Method/Device: Dredge (DRG) * Comment: Institute: NIWA
TANG22-G995  * Latitude: -22.418330 * Longitude: -161.483330 * Date/Time: 1974-05-15T00:00:00 * Elevation: -4715.0 m * Location: South Pacific Ocean * Campaign: NZOI-Tangaroa_22 * Basis: Tangaroa (1960) * Method/Device: Dredge (DRG) * Comment: Institute: NIWA
TANG22-G1006B  * Latitude: -26.076670 * Longitude: -160.065000 * Date/Time: 1974-05-21T00:00:00 * Elevation: -5116.0 m * Location: South Pacific Ocean * Campaign: NZOI-Tangaroa_22 * Basis: Tangaroa (1960) * Method/Device: Dredge (DRG) * Comment: Institute: NIWA
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.
This dataset represents the digitized Table XIV, pp. 175-176, of the related publication.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventGlasby, Geoffrey P
2 Latitude of eventLatitudeGlasby, Geoffrey P
3 Longitude of eventLongitudeGlasby, Geoffrey P
4 Elevation of eventElevationmGlasby, Geoffrey P
5 IdentificationIDGlasby, Geoffrey P
6 Deposit typeDeposit typeGlasby, Geoffrey P
7 DEPTH, sediment/rockDepth sedmGlasby, Geoffrey PGeocode
8 ManganeseMn%Glasby, Geoffrey PElectron microprobe (EMP)
9 IronFe%Glasby, Geoffrey PElectron microprobe (EMP)
10 NickelNi%Glasby, Geoffrey PElectron microprobe (EMP)
11 CopperCu%Glasby, Geoffrey PElectron microprobe (EMP)
12 CobaltCo%Glasby, Geoffrey PElectron microprobe (EMP)
13 TitaniumTi%Glasby, Geoffrey PElectron microprobe (EMP)
14 ZincZn%Glasby, Geoffrey PElectron microprobe (EMP)
15 AluminiumAl%Glasby, Geoffrey PElectron microprobe (EMP)
16 CalciumCa%Glasby, Geoffrey PElectron microprobe (EMP)
17 SiliconSi%Glasby, Geoffrey PElectron microprobe (EMP)
18 PotassiumK%Glasby, Geoffrey PElectron microprobe (EMP)
19 MagnesiumMg%Glasby, Geoffrey PElectron microprobe (EMP)
20 ShapeShapeGlasby, Geoffrey PShape of manganese nodules
21 TextureTextureGlasby, Geoffrey PSurface texture of manganese nodules
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
483 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Latitude		3 
Longitude		4 
Elevation [m]		5 
ID		6 
Deposit type		7 
Depth sed [m]		8  
Mn [%]		9  
Fe [%]		10  
Ni [%]		11  
Cu [%]		12  
Co [%]		13  
Ti [%]		14  
Zn [%]		15  
Al [%]		16  
Ca [%]		17  
Si [%]		18  
K [%]		19  
Mg [%]		20 
Shape		21 
Texture
TANG22-G992A -24.3550-163.6833-5440TANG22-G992A-1GMm42Mn nudule013.4619.070.190.180.721.090.043.501.614.300.301.58
TANG22-G992A-24.3550-163.6833-5440TANG22-G992A-1GMm43Mn nudule016.6318.790.380.500.762.130.203.611.392.790.291.13
TANG22-G992A-24.3550-163.6833-5440TANG22-G992A-1GMm44Mn nudule023.9715.270.370.251.030.250.254.251.832.320.401.54
TANG22-G992A-24.3550-163.6833-5440TANG22-G992A-1GMm45Mn nudule017.8818.610.270.220.531.480.314.461.423.050.321.21
TANG22-G992A-24.3550-163.6833-5440TANG22-G992A-1GMm46Mn nudule022.2115.500.470.360.721.350.344.241.702.470.401.62
TANG22-G992A-24.3550-163.6833-5440TANG22-G992A-1GMm47Mn nudule022.0216.850.390.370.721.310.103.621.602.560.501.40
TANG22-G995 -22.4183-161.4833-4715TANG22-G995-1GMm48Mn nudule032.157.801.560.871.061.430.223.961.591.430.424.96Tabular to discoidalRough
TANG22-G995-22.4183-161.4833-4715TANG22-G995-1GMm49Mn nudule027.8012.770.620.201.061.340.122.982.221.630.441.24Tabular to discoidalRough
TANG22-G995-22.4183-161.4833-4715TANG22-G995-1GMm50Mn nudule025.2514.620.500.240.751.060.273.781.922.070.351.43Tabular to discoidalRough
TANG22-G995-22.4183-161.4833-4715TANG22-G995-1GMm51Mn nudule025.3514.790.510.160.721.300.212.632.091.820.471.09Tabular to discoidalRough
TANG22-G995-22.4183-161.4833-4715TANG22-G995-1GMm52Mn nudule017.6815.670.760.440.402.010.202.741.733.250.491.15Tabular to discoidalRough
TANG22-G995-22.4183-161.4833-4715TANG22-G995-1GMm53Mn nudule016.2215.840.220.211.111.290.063.152.043.340.381.44Tabular to discoidalRough
TANG22-G1006B -26.0767-160.0650-5116TANG22-G1006B-1GMm28Mn nudule042.201.812.321.340.010.180.572.281.420.991.493.36SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm29Mn nudule031.407.271.950.920.570.730.324.221.401.660.413.84SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm30Mn nudule026.1811.570.880.280.851.090.063.392.282.600.391.98SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm31Mn nudule031.559.041.420.540.420.570.222.802.122.670.462.30SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm32Mn nudule032.739.231.630.600.410.570.322.682.152.900.502.36SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm33Mn nudule022.6416.690.480.270.511.010.283.272.033.000.321.32SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm34Mn nudule037.702.822.691.510.180.280.374.170.980.910.562.85SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm35Mn nudule025.3814.200.480.261.281.300.233.121.872.110.411.67SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm36Mn nudule029.2011.811.000.300.801.030.403.801.651.450.431.84SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm37Mn nudule019.3716.450.300.030.931.730.074.251.522.900.431.41SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm38Mn nudule024.6815.070.550.070.831.270.353.151.722.040.451.57SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm39Mn nudule035.622.113.000.820.600.180.223.501.090.700.594.40SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm40Mn nudule034.286.661.770.700.420.580.253.272.031.770.522.79SpheroidalRough
TANG22-G1006B-26.0767-160.0650-5116TANG22-G1006B-1GMm41Mn nudule023.049.860.480.330.420.604.601.624.470.912.50SpheroidalRough
TANG22-G1007 -27.6517-160.0150-4982TANG22-G1007-1GMm54Mn nudule020.9614.410.460.200.570.840.221.931.320.820.370.20DiscoidalRough
TANG22-G1007-27.6517-160.0150-4982TANG22-G1007-1GMm55Mn nudule017.5914.640.230.120.571.230.2312.511.502.270.291.31DiscoidalRough
TANG22-G1007-27.6517-160.0150-4982TANG22-G1007-1GMm56Mn nudule028.8612.830.790.310.951.190.542.721.411.810.443.19DiscoidalRough
TANG22-G1007-27.6517-160.0150-4982TANG22-G1007-1GMm57Mn nudule019.2615.360.270.300.640.910.417.431.863.520.601.37DiscoidalRough
TANG22-G1007-27.6517-160.0150-4982TANG22-G1007-1GMm58Mn nudule020.3117.680.690.450.801.270.553.461.572.530.441.30DiscoidalRough