Citation:

PANGAEA.943839

Name: Rare-earth and major elements concentration in manganese nodules from the Northwest Atlantic
Creator: Sunit Kumar Addy
Published: 2022-05-09
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

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Abstract:

The shale-normalized REE patterns of manganese nodules from the northwest Atlantic show enrichment in Sm and Eu relative to the heavier and lighter REE, excluding Ce, and are similar to the patterns previously observed in deep water (> 3000m) nodules from the Pacific. The inverse relation of this pattern to that of sea water and the high Ce anomaly (average 5.5) indicate that probably the REE in the nodules originate from sea water and the nodules are possibly hydrogenous. The patterns for micronodules are similar to those of the nodules but the concentrations of REE were substantially higher in two of them. The red clay occurring on abyssal hills where nodules and micronodules are found also shows higher REE concentrations over terrigenous gray clay. The latter is devoid of nodules and micronodules and occurs in abyssal plains. The excess REE in the red clay also show a pattern similar to those of the nodules and micronodules. Most of the micronodule samples show a lower Ce anomaly (1.7) and lower Co concentration compared to the nodules, so it is inferred that at least some micronodules were formed during post-depositional periods when the conditions were less oxidizing than average.

Keyword(s):

Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

Related to:

Addy, Sunit Kumar (1979): Rare earth element patterns in manganese nodules and micronodules from northwest Atlantic. Geochimica et Cosmochimica Acta, 43(7), 1105-1115, https://doi.org/10.1016/0016-7037(79)90097-8

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: 27.660817 * Median Longitude: -60.827200 * South-bound Latitude: 26.515000 * West-bound Longitude: -64.500000 * North-bound Latitude: 29.246700 * East-bound Longitude: -58.825000

Date/Time Start: 1973-08-21T00:00:00 * Date/Time End: 1973-09-01T00:00:00

Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 0.05 m

Event(s):

ED14-73-DR5 * Latitude: 29.246700 * Longitude: -64.500000 * Elevation: -4782.0 m * Location: Atlantic Ocean * Method/Device: Dredge (DRG) * Comment: Eastward campaign ED14-73

RC16-003B (13.BC3) * Latitude: 26.590000 * Longitude: -59.828300 * Date/Time: 1973-08-21T00:00:00 * Elevation: -5260.0 m * Penetration: 0.95 m * Location: Atlantic Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Box corer (BC)

RC16-004B (13.BC4) * Latitude: 26.983300 * Longitude: -58.825000 * Date/Time: 1973-08-23T00:00:00 * Elevation: -5132.0 m * Penetration: 0.51 m * Location: Atlantic Ocean * Campaign: * Basis: Robert Conrad * Method/Device: Box corer (BC)

Comment:

Digitized Table 1, page 1108-1109.

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		Addy, Sunit Kumar
2	Latitude of event	Latitude		Addy, Sunit Kumar
3	Longitude of event	Longitude		Addy, Sunit Kumar
4	Elevation of event	Elevation	m	Addy, Sunit Kumar
5	Device type	Device		Addy, Sunit Kumar
6	Identification	ID		Addy, Sunit Kumar
7	DEPTH, sediment/rock	Depth sed	m	Addy, Sunit Kumar		Geocode
8	Sample position	Samp pos		Addy, Sunit Kumar
9	Manganese	Mn	%	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
10	Iron	Fe	%	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
11	Zinc	Zn	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
12	Copper	Cu	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
13	Nickel	Ni	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
14	Cobalt	Co	mg/kg	Addy, Sunit Kumar	Atomic absorption spectrometry (AAS)
15	Lanthanum	La	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
16	Cerium	Ce	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
17	Neodymium	Nd	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
18	Samarium	Sm	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
19	Europium	Eu	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
20	Terbium	Tb	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
21	Ytterbium	Yb	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
22	Lutetium	Lu	mg/kg	Addy, Sunit Kumar	Instrumental neutron activation analysis (INAA)
23	Acid soluble, total	Acid sol tot	%	Addy, Sunit Kumar	Wet chemistry
24	Comment	Comment		Addy, Sunit Kumar	X-ray diffraction (XRD)	Mn Mineralogy
25	Deposit type	Deposit type		Addy, Sunit Kumar
26	Description	Description		Addy, Sunit Kumar		Composition is given in an acid insoluble free basis and CaCO3 content is negligible for all samples

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

158 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Device	6 ID	7 Depth sed [m]	8 Samp pos	9 Mn [%]	10 Fe [%]	11 Zn [mg/kg]	12 Cu [mg/kg]	13 Ni [mg/kg]	14 Co [mg/kg]	15 La [mg/kg]	16 Ce [mg/kg]	17 Nd [mg/kg]	18 Sm [mg/kg]	19 Eu [mg/kg]	20 Tb [mg/kg]	21 Yb [mg/kg]	22 Lu [mg/kg]	23 Acid sol tot [%]	24 Comment	25 Deposit type	26 Description
RC16-019RD	28.7566	-60.3583	-5338	dredge, rock	RC16-019RD-1-A11	0.00	Surface	13.44	17.71	373	1152	2434	4672	134	3272		50	12.7	6.6	9.6	1.4	20.8		Mn nodule	Outer 4.0 mm rind
RC16-019RD	28.7566	-60.3583	-5338	dredge, rock	RC16-019RD-1-A12	0.00	Surface	14.20	16.64	349	1150	2645	2479	167	1698		39	10.6	5.0	12.4	2.1	14.3		Mn nodule	Inner core
ED14-73-DR5	29.2467	-64.5000	-4782	dredge	ED14-73-DR5-1-A13	0.00	Surface	14.85	16.26	476	1796	2358	3931	256	1904		61	12.3	6.8	12.2	2.1	12.0	Delta MnO2	Mn nodule	Outer 5.0 mm rind
ED14-73-DR5	29.2467	-64.5000	-4782	dredge	ED14-73-DR5-1-A14	0.00	Surface	12.46	17.66	417	1185	2176	1841	186	1845		50	12.2	5.9	14.5	2.3	12.3	Delta MnO2	Mn nodule	Inner core
RC16-003B	26.5900	-59.8283	-5260	core, box	RC16-003B-1-A15	0.00	Surface	16.72	18.47	435	1748	3772	3972	216	2050	230	56	13.0	7.8	18.7	2.5	13.2	Delta MnO2	Mn nodule	Whole nodule
RC16-004B	26.9833	-58.8250	-5132	core, box	RC16-004B-1-A16	0.00	Surface	16.47	16.54	484	1705	4149	3872	189	1759		56	10.9	6.4	12.8	2.1	10.7		Mn nodule	Whole nodule
RC16-017RD	26.5150	-59.8633	-5858	dredge, rock	RC16-017RD-2-A17	0.00	Surface	14.15	19.71	464	1736	3332	2507	152	1960		35	6.5	4.3	11.7	1.6	19.3	Delta MnO2	Mn nodule	Whole nodule
RC16-006B	27.8733	-61.5883	-5480	core, box	RC16-006B-2-A18	0.05	Buried	15.62	18.69	473	1550	3188	3475	166	2266		66	7.1	5.0	12.1	2.1	20.1	Delta MnO2	Mn nodule	Whole nodule