Cronan, David S (2022): Selected minor element chemical analyses of manganese nodules and crusts from the Indian Ocean [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.948834
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Abstract:
Ferromanganese nodules and encrustations have been analysed for selected minor elements (mainly Cd, Cr and Ti) by atomic absorption spectrophotometry. The preparation of ferromanganese-oxide samples for analysis varied according to the nature of the samples. Those covered by adhering sediment were washed clean with de-ionised water and left to dry but in some cases this treatment was not necessary. Where possible, 10 to 15 g. of sample was taken for crushing. Preliminary dessication procedure was required for ferromanganese-oxide samples, because of their tendency to absorb atmospheric moisture when in a finely divided state. After 2 ml. of 6M HCL had been added to the beakers, they were placed on a hotplate and heated gently for about 2 hours to breakdown the Mn oxides prior to the addition of the main reagents. All the elements investigated were analysed in all samples by atomic absorption spectrophotometry using a Perkin Elmer 403 spectrophotometer.
Related to:
Cronan, David S (1980): Underwater minerals. Ocean science, resources and technology. Academic Press, London, United Kingdom, 362 pp, Cronan_Underwater_Minerals_1980.pdf
Cronan, David S (2022): Chemical analyses of manganese nodules and crusts from the Indian, Atlantic and Pacific oceans (main elements) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.948833
Moorby, S A (1978): The geochemistry and mineralogy of some ferromanganese oxides and associated deposits from the Indian and Atlantic Oceans [dissertation]. Imperial College of Science, Technology and Medicine (University of London), 378 pp, hdl:10044/1/34963
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: 4.989975 * Median Longitude: 31.354336 * South-bound Latitude: -32.670000 * West-bound Longitude: -12.933000 * North-bound Latitude: 36.517000 * East-bound Longitude: 76.017000
Date/Time Start: 1964-07-08T00:00:00 * Date/Time End: 1975-06-17T00:00:00
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 2.30 m
Event(s):
24-234 * Latitude: 4.482700 * Longitude: 51.224700 * Date/Time: 1972-05-19T00:00:00 * Elevation: -4721.0 m * Penetration: 247 m * Recovery: 90.1 m * Location: Indian Ocean//RIDGE * Campaign: Leg24 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 142.5 m cored; 0 m drilled; 63.2 % recovery
DODO-112P * Latitude: -22.683000 * Longitude: 76.017000 * Date/Time: 1964-07-08T00:00:00 * Elevation: -4167.0 m * Recovery: 13 cm * Location: Indian Ocean * Campaign: DODO * Basis: Argo * Method/Device: Piston corer (PC)
Shackleton73/2_077 (SH73:077) * Latitude: 36.517000 * Longitude: -11.775000 * Elevation: -1600.0 m * Location: Atlantic Ocean * Campaign: Shackleton73/2 * Basis: Shackleton * 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 Appendix - Part 2, pp. 340-350 of the related publication. Some of the samples were omitted because already published on PANGAEA. Extra samples and chemical elements were present in the NOAA-MMS data table. The extra elements are probably coming from the thesis work of Moorby, C. A; which were not published at the time but transmitted by Cronan to NOAA-NGDC.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Moorby, S A | |||
| 2 | Latitude of event | Latitude | Moorby, S A | |||
| 3 | Longitude of event | Longitude | Moorby, S A | |||
| 4 | Elevation of event | Elevation | m | Moorby, S A | ||
| 5 | Identification | ID | Moorby, S A | |||
| 6 | DEPTH, sediment/rock | Depth sed | m | Moorby, S A | Geocode | |
| 7 | Cadmium | Cd | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 8 | Chromium | Cr | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 9 | Titanium | Ti | % | Moorby, S A | Atomic absorption spectrophotometry | |
| 10 | Barium | Ba | % | Moorby, S A | Atomic absorption spectrophotometry | |
| 11 | Beryllium | Be | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 12 | Gallium | Ga | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 13 | Potassium | K | % | Moorby, S A | Atomic absorption spectrophotometry | |
| 14 | Lithium | Li | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 15 | Magnesium | Mg | % | Moorby, S A | Atomic absorption spectrophotometry | |
| 16 | Molybdenum | Mo | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 17 | Sodium | Na | % | Moorby, S A | Atomic absorption spectrophotometry | |
| 18 | Niobium | Nb | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 19 | Phosphorus | P | % | Moorby, S A | Atomic absorption spectrophotometry | |
| 20 | Sulfur | S | % | Moorby, S A | Atomic absorption spectrophotometry | |
| 21 | Tin | Sn | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 22 | Strontium | Sr | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 23 | Vanadium | V | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 24 | Zirconium | Zr | mg/kg | Moorby, S A | Atomic absorption spectrophotometry | |
| 25 | Deposit type | Deposit type | Moorby, S A | Fe-Mn deposit | ||
| 26 | Sediment type | Sediment | Moorby, S A | |||
| 27 | Description | Description | Moorby, S A |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
138 data points