Citation:

PANGAEA.961647

Name: Chemical composition of manganese nodules and crusts from the Central Pacific
Published: 2023-08-21
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

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Published: 2023-08-21 • DOI registered: 2023-08-21

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Abstract:

Of the 26 samples collected during VA-05/1 cruise of R V Valdivia during 1972, 19 were nodules of different forms, 4 ferromanganese crusts and 3 cylindral nodules. Nodules and crusts were air dried and pulverised. In case of cylindrical-types and crust material, the clayey-calcareous filling and core materials were removed. The powder was dried at 110°C for 24 hr. Samples were digested in an autoclave 'BOMB' with a mixture of HF-HCl-HNO3. Determinations were carried out on a PE atomic absorption spectrophotometer.

Keyword(s):

Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

Related to:

Roonwal, G S; Friedrich, Günther H W (1980): Chemical variation and element correlation in manganese nodules from a dredge haul in the Central Pacific. Indian Journal of Marine Sciences, 9, 235-239

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

Documentation:

Fig. 1: Morphology of the nodules [A, round to elipsoidal to angular; B, polynodule in which 2 large and small nodules are seen; and C, cylindrical]

Fig. 1: Morphology of the nodules [D, C.S. of feromanganese crust]

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:

Latitude: 11.100000 * Longitude: -147.500000

Date/Time Start: 1973-04-01T00:00:00 * Date/Time End: 1973-04-01T00:00:00

Minimum Elevation: -5319.0 m * Maximum Elevation: -5319.0 m

Event(s):

VA-05/1_26 (Location 26) * Latitude: 11.100000 * Longitude: -147.500000 * Date/Time: 1973-04-01T00:00:00 * Elevation: -5319.0 m * Location: Pacific Ocean * Campaign: * Basis: Valdivia (1961) * 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 Table 1, pp. 237, of the related publication.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Roonwal, G S
2	LATITUDE	Latitude		Roonwal, G S		Geocode
3	LONGITUDE	Longitude		Roonwal, G S		Geocode
4	ELEVATION	Elevation	m a.s.l.	Roonwal, G S		Geocode
5	Identification	ID		Roonwal, G S
6	Deposit type	Deposit type		Roonwal, G S
7	DEPTH, sediment/rock	Depth sed	m	Roonwal, G S		Geocode
8	Manganese	Mn	%	Roonwal, G S	Atomic absorption spectrophotometry
9	Iron	Fe	%	Roonwal, G S	Atomic absorption spectrophotometry
10	Cobalt	Co	%	Roonwal, G S	Atomic absorption spectrophotometry
11	Nickel	Ni	%	Roonwal, G S	Atomic absorption spectrophotometry
12	Copper	Cu	%	Roonwal, G S	Atomic absorption spectrophotometry
13	Zinc	Zn	mg/kg	Roonwal, G S	Atomic absorption spectrophotometry	ppm
14	Lead	Pb	mg/kg	Roonwal, G S	Atomic absorption spectrophotometry	ppm
15	Strontium	Sr	mg/kg	Roonwal, G S	Atomic absorption spectrophotometry	ppm
16	Vanadium	V	mg/kg	Roonwal, G S	Atomic absorption spectrophotometry	ppm
17	Cadmium	Cd	mg/kg	Roonwal, G S	Atomic absorption spectrophotometry	ppm
18	Chromium	Cr	mg/kg	Roonwal, G S	Atomic absorption spectrophotometry	ppm
19	Molybdenum	Mo	mg/kg	Roonwal, G S	Atomic absorption spectrophotometry	ppm
20	Barium	Ba	%	Roonwal, G S	Atomic absorption spectrophotometry
21	Titanium	Ti	%	Roonwal, G S	Atomic absorption spectrophotometry
22	Magnesium	Mg	%	Roonwal, G S	Atomic absorption spectrophotometry
23	Calcium	Ca	%	Roonwal, G S	Atomic absorption spectrophotometry
24	Sodium	Na	%	Roonwal, G S	Atomic absorption spectrophotometry
25	Potassium	K	%	Roonwal, G S	Atomic absorption spectrophotometry
26	Aluminium	Al	%	Roonwal, G S	Atomic absorption spectrophotometry
27	Silicon	Si	%	Roonwal, G S	Atomic absorption spectrophotometry
28	Shape	Shape		Roonwal, G S		Shape of Mn deposit
29	Texture	Texture		Roonwal, G S		Surface texture of Mn deposit

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:

616 data points

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