Citation:

PANGAEA.956733

Name: Average chemical analyses of ferromanganese deposit samples from dredges taken in the Indian Ocean (Cruise D16, R.R.S. Discovery)
Published: 2023-03-17
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

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Published: 2023-03-17 • DOI registered: 2023-04-15

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Abstract:

Manganese crusts and nodules were retrieved from dredges and grabs performed during Cruise D16 of R.R.S. Discovery. Samples were analysed by a combination of atomic absorption spectrometry and direct-reading optical emission spectrography. Samples were first crushed in an agate mortarand pestle to pass 300 mesh and stored in sealed Polythene tubes. 'Salting' from previoussamples was minimised by washing the mortar and pestle with HC1, de-ionised water, andacetone, and, in order to minimise the effects of sampling errors, care was taken not toincorporate the nodule nucleus into the sample. Samples were ignited at 420°c for 4 h, cooled in a desiccator. The ignited material was then prepared for analysis. All analytical results except are presented on an air-dried basis.

Keyword(s):

Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

Related to:

Glasby, Geoffrey P; Tooms, J S; Howarth, R J (1974): Geochemistry of manganese concretions from the northwest Indian Ocean. New Zealand Journal of Science, 17, 387-407

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: 2.833336 * Median Longitude: 59.932502 * South-bound Latitude: 2.730000 * West-bound Longitude: 59.768340 * North-bound Latitude: 2.960000 * East-bound Longitude: 60.046670

Date/Time Start: 1967-04-01T00:00:00 * Date/Time End: 1967-04-08T04:00:00

Minimum Elevation: -4137.0 m * Maximum Elevation: -3432.0 m

Event(s):

D6249 * Latitude: 2.730000 * Longitude: 59.903340 * Date/Time: 1967-04-01T00:00:00 * Elevation: -3975.0 m * Location: Carlsberg Ridge * Campaign: * Basis: Discovery (1962) * Method/Device: Dredge, rock (DRG_R) * Comment: Institute: NIO, Wormley

D6252 * Latitude: 2.772500 * Longitude: 59.861670 * Date/Time: 1967-04-02T00:00:00 * Elevation: -3775.0 m * Location: Carlsberg Ridge * Campaign: * Basis: Discovery (1962) * Method/Device: Dredge, rock (DRG_R) * Comment: Institute: NIO, Wormley

D6253 * Latitude: 2.799170 * Longitude: 59.842500 * Date/Time: 1967-04-02T00:00:00 * Elevation: -3563.0 m * Location: Carlsberg Ridge * Campaign: * Basis: Discovery (1962) * Method/Device: Dredge, rock (DRG_R) * Comment: Institute: NIO, Wormley

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.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	Identification	ID
6	Deposit type	Deposit type
7	Manganese	Mn	%	Glasby, Geoffrey P	Atomic absorption spectrophotometry
8	Iron	Fe	%	Glasby, Geoffrey P	Atomic absorption spectrophotometry
9	Silicon dioxide	SiO2	%	Glasby, Geoffrey P	Atomic absorption spectrophotometry
10	Titanium	Ti	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
11	Vanadium	V	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
12	Chromium	Cr	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
13	Cobalt	Co	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
14	Nickel	Ni	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
15	Copper	Cu	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
16	Zinc	Zn	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
17	Zirconium	Zr	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
18	Molybdenum	Mo	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
19	Lead	Pb	mg/kg	Glasby, Geoffrey P	Optical emission spectrography
20	Number of analyses	N analyses	#	Glasby, Geoffrey P		Number of sample analyses averaged for one station

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

143 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 Mn [%]	8 Fe [%]	9 SiO2 [%]	10 Ti [mg/kg]	11 V [mg/kg]	12 Cr [mg/kg]	13 Co [mg/kg]	14 Ni [mg/kg]	15 Cu [mg/kg]	16 Zn [mg/kg]	17 Zr [mg/kg]	18 Mo [mg/kg]	19 Pb [mg/kg]	20 N analyses [#]
D6249	2.7300	59.9033	-3975	D6249-1GLB74	Mn crust	14.78	14.29	19.00	7386	684	16	3327	2814	666	256	493	348	730	18
D6252	2.7725	59.8617	-3775	D6252-2GLB74	Mn crust	16.20	13.60	15.10	6415	725	15	3427	3145	616	202	432	415	609	4
D6253	2.7992	59.8425	-3563	D6253-2GLB74	Mn crust	15.77	15.98	19.65	7026	907	18	3712	3842	775	377	658	505	921	24
D6256	2.8392	59.8550	-3617	D6256-1GLB74	Mn crust	14.35	15.05	19.94	7190	909	28	372	3721	716	361	637	478	1002	14
D6257	2.7783	59.7683	-3432	D6257-1GLB74	Mn crust	16.40	17.20	17.20	6280	830	15	372	2610	460	273	528	609	764	7
D6263	2.7642	60.0417	-3816	D6263-2GLB74	Mn crust	16.02	14.68	19.74	5912	883	17	3037	4685	1277	473	468	363	905	19
D6269	2.9417	60.0467	-4092	D6269-2GLB74	Mn crust	17.01	13.85	22.46	4865	847	14	2156	6028	1578	536	372	373	738	38
D6271	2.9600	60.0333	-4137	D6271-1GLB74	Mn nodule	19.79	14.01	18.08	3798	804	17	1674	8120	1990	594	282	508	736	24
D6273	2.9150	60.0400	-4042	D6273-2GLB74	Mn crust	18.13	13.83	21.26	4495	728	1753	167	7107	2332	594		422	669	20