Siddiquie, H N; DasGupta, D R; SenGupta, N R; Shrivastava, P C; Mallik, Tapas Kumar: Chemical analyses of Fe-Mn nodules from the Indian Ocean [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.951559 (dataset in review)
Abstract:
Mn nodule samples were decomposed with HCl and fumed with H2S04. SiO2 was estimated by the standard procedure of HF. The residue, after the removal of SiO2, was fused with pyrosulphate and the filtrate was added to the main solution. The solution was made to a definite volume-stock solution. Barium was estimated from the residue left after pyrosulphate fusion as chromate. Iron was estimated by the dichromate titration using diphenylamine sulphonate as indicator after passing the solution through the Ag-reductor. Mn was estimated by the bismuthate procedure. R2O3 was precipitated from the stock solution by hexamine. The precipitate was ignited and fused with Na2CO3 boiled in water and filtered and Al2O3 was estimated by the oxine procedure. From the filtrate, from R2O3 precipitation, Ca was precipitated as oxalate and estimated. TiO2 was estimated colorimetrically by H2O2 in presence of H3PO4. Soda and potash were estimated by AAS after decomposing the sample with HCl and H2SO4. Ni, Co and Cu were estimated by AAS, after decomposing with HCl and removing the silica by filtration. +H20 was estimated in a separate sample by the Penfield method and moisture (—H20) by heating at 110°C. For phosphorous, the sample was decomposed with HCl, baked to eliminate silica and filtered. R2O3 was precipitated, filtered and dissolved in HNO3. Phosphorous was precipitated by nitroammonium molybdate and estimated by the acidimetric titration.
Related to:
Siddiquie, H N; DasGupta, D R; SenGupta, N R; Shrivastava, P C; Mallik, Tapas Kumar (1978): Manganese iron nodules from the Indian Ocean. Indian Journal of Marine Sciences, 7, 239-253, http://nopr.niscpr.res.in/handle/123456789/39548
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):
Coverage:
Median Latitude: -16.965946 * Median Longitude: 84.063746 * South-bound Latitude: -29.866600 * West-bound Longitude: 53.350000 * North-bound Latitude: -1.616667 * East-bound Longitude: 108.316667
Date/Time Start: 1960-01-29T00:00:00 * Date/Time End: 1964-12-12T00:00:00
Minimum Elevation: -5860.0 m * Maximum Elevation: -4119.0 m
Event(s):
CH43-5RD (Sta 11) * Latitude: -1.616667 * Longitude: 53.350000 * Date/Time: 1964-04-09T00:00:00 * Elevation: -4784.0 m * Location: Atlantic Ocean * Campaign: CH04301 * Basis: Chain * Method/Device: Dredge (DRG)
DODO-062D * Latitude: -16.300000 * Longitude: 104.267000 * Date/Time: 1964-06-21T00:00:00 * Elevation: -5660.0 m * Location: Indian Ocean * Campaign: DODO * Basis: Argo * Method/Device: Dredge (DRG)
DODO-066DA * Latitude: -19.933000 * Longitude: 100.000000 * Date/Time: 1964-06-23T00:00:00 * Elevation: -5860.0 m * Location: Indian Ocean * Campaign: DODO * Basis: Argo * Method/Device: Dredge (DRG)
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 Tables 4-5, pp. 252 of the related publication.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Siddiquie, H N | |||
| 2 | Latitude of event | Latitude | Siddiquie, H N | |||
| 3 | Longitude of event | Longitude | Siddiquie, H N | |||
| 4 | Elevation of event | Elevation | m | Siddiquie, H N | ||
| 5 | Identification | ID | Siddiquie, H N | |||
| 6 | Deposit type | Deposit type | Siddiquie, H N | |||
| 7 | Manganese | Mn | % | Siddiquie, H N | Wet chemistry | |
| 8 | Iron | Fe | % | Siddiquie, H N | Wet chemistry | |
| 9 | Nickel | Ni | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 10 | Copper | Cu | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 11 | Cobalt | Co | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 12 | Molybdenum | Mo | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 13 | Zinc | Zn | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 14 | Titanium | Ti | % | Siddiquie, H N | Colorimetry | |
| 15 | Lead | Pb | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 16 | Strontium | Sr | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 17 | Barium | Ba | % | Siddiquie, H N | Wet chemistry | |
| 18 | Phosphorus | P | % | Siddiquie, H N | Wet chemistry | |
| 19 | Aluminium oxide | Al2O3 | % | Siddiquie, H N | Wet chemistry | |
| 20 | Calcium oxide | CaO | % | Siddiquie, H N | Wet chemistry | |
| 21 | Sodium oxide | Na2O | % | Siddiquie, H N | Wet chemistry | |
| 22 | Potassium oxide | K2O | % | Siddiquie, H N | Wet chemistry | |
| 23 | Silicon dioxide | SiO2 | % | Siddiquie, H N | Wet chemistry | |
| 24 | Carbon | C | % | Siddiquie, H N | Wet chemistry | |
| 25 | Carbon dioxide | CO2 | % | Siddiquie, H N | Wet chemistry | |
| 26 | Water in rock | H2O | % | Siddiquie, H N | Wet chemistry | H2O+, structural part, similar to LOI |
| 27 | Water in rock | H2O | % | Siddiquie, H N | Loss of weight after drying at 110°C for 12h | H2O-, hydration part |
| 28 | Chromium | Cr | % | Siddiquie, H N | Atomic absorption spectrophotometry | |
| 29 | Sample type | Samp type | Siddiquie, H N | Part analysed |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
396 data points