/* DATA DESCRIPTION:
Citation:	Glasby, Geoffrey P; Friedrich, Günther; Thijssen, Theo; Plüger, W L; Kunzendorf, Helmar; Ghosh, A K; Roonwal, G S (2023): Bulk chemical analysis of selected manganese nodules retrieved during VA13/2 cruise in the Equatorial North Pacific [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.961660
Abstract:	Manganese nodules from VA13/2 cruise (R/V Valdivia) were selected for a variety of morphologies and size. They were regrouped by size class and chemically analyzed in bulk. Mn, Fe, Ni, and Cu concentrations were determined by X-ray fluorescence spectroscopy following grinding and drying of the samples at 1l0°C for 24 hr. The elements Co, Zn, Al, Si, and Ba were analyzed in selected samples by atomic absorption spectrophotometry in Aachen. In addition, the percent lithogenous fraction of selected samples was determined following treatment of the sample by 25 percent HCl. Element composition in these nodules was then computed on a lithogenous-free basis to make allowance for the effects of variation in the silicate contents of the nodules.
Keyword(s):	Geochemistry; manganese micronodule; manganese nodule; ocean; Sediment
Related to:	Glasby, Geoffrey P; Friedrich, Günther; Thijssen, Theo; Plüger, W L; Kunzendorf, Helmar; Ghosh, A K; Roonwal, G S (1982): Distribution, Morphology, and Geochemistry of Manganese Nodules from the Valivia 13/2 Area, Equatorial North Pacific. Distribution, morphology, and geochemistry of manganese nodules from the Valdivia 13/2 area, equatorial North Pacific, Pacific Science, 36(2), 241-263, hdl:10125/424
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) (URI: https://wiki.pangaea.de/wiki/NOAA-MMS)
Coverage:	MEDIAN LATITUDE: 9.321541 * MEDIAN LONGITUDE: -146.005856 * SOUTH-BOUND LATITUDE: 9.252112 * WEST-BOUND LONGITUDE: -146.074056 * NORTH-BOUND LATITUDE: 9.457161 * EAST-BOUND LONGITUDE: -145.870049
	DATE/TIME START: 1976-02-09T00:00:00 * DATE/TIME END: 1976-03-10T00:00:00
	MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m
Event(s):	VA13-2-66KA * LATITUDE: 9.302700 * LONGITUDE: -146.052800 * ELEVATION: -4900.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Box corer/grab
	VA13-2-67GBH * LATITUDE: 9.274467 * LONGITUDE: -146.072772 * DATE/TIME: 1976-02-09T00:00:00 * ELEVATION: -5200.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Free-fall grab (FFGR)
	VA13-2-73GBH * LATITUDE: 9.252112 * LONGITUDE: -146.074056 * DATE/TIME: 1976-02-09T00:00:00 * ELEVATION: -5161.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Free-fall grab (FFGR)
	VA13-2-74KA * LATITUDE: 9.290000 * LONGITUDE: -146.073000 * DATE/TIME: 1976-02-09T00:00:00 * ELEVATION: -5225.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Box corer (BC) (URI: http://en.wikipedia.org/wiki/Box_corer)
	VA13-2-83KA * LATITUDE: 9.345949 * LONGITUDE: -145.950309 * DATE/TIME: 1976-02-09T00:00:00 * ELEVATION: -5061.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Free-fall grab (FFGR)
	VA13-2-103GBH * LATITUDE: 9.298212 * LONGITUDE: -145.958371 * DATE/TIME START: 1976-02-09T00:00:00 * DATE/TIME END: 1976-03-10T00:00:00 * ELEVATION: -5192.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Free-fall grab (FFGR)
	VA13-2-120GBH * LATITUDE: 9.324227 * LONGITUDE: -146.073355 * DATE/TIME START: 1976-02-09T00:00:00 * DATE/TIME END: 1976-03-10T00:00:00 * ELEVATION: -5107.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Free-fall grab (FFGR)
	VA13-2-140GBH * LATITUDE: 9.457161 * LONGITUDE: -145.870049 * DATE/TIME: 1976-02-09T00:00:00 * ELEVATION: -5270.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Free-fall grab (FFGR)
	VA13-2-155KA * LATITUDE: 9.334815 * LONGITUDE: -145.940023 * DATE/TIME: 1976-02-09T00:00:00 * ELEVATION: -4831.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Box corer (BC) (URI: http://en.wikipedia.org/wiki/Box_corer)
	VA13-2-165KA * LATITUDE: 9.320800 * LONGITUDE: -146.016700 * ELEVATION: -5183.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Box corer/grab
	VA13-2-167-168GBH * LATITUDE: 9.336512 * LONGITUDE: -145.982980 * DATE/TIME: 1976-02-09T00:00:00 * ELEVATION: -5044.0 m * LOCATION: Pacific Ocean * CAMPAIGN: VA-13/2 * BASIS: Valdivia (1961) (URI: https://de.wikipedia.org/wiki/Valdivia_(Schiff,_1961)) * METHOD/DEVICE: Free-fall grab (FFGR)
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 11, pp. 255, of the related publication.
Parameter(s):	Event label (Event) * PI: Glasby, Geoffrey P
	Latitude of event (Latitude) * PI: Glasby, Geoffrey P
	Longitude of event (Longitude) * PI: Glasby, Geoffrey P
	Elevation of event [m] (Elevation) * PI: Glasby, Geoffrey P
	Identification (ID) * PI: Glasby, Geoffrey P
	Deposit type (Deposit type) * PI: Glasby, Geoffrey P
	DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Glasby, Geoffrey P
	Nodules, size [cm] (Nodules size) * PI: Glasby, Geoffrey P * COMMENT: Average size of Mn nodules analysed
	Nodules, size [cm] (Nodules size) * PI: Glasby, Geoffrey P * COMMENT: Minimum size of Mn nodules analysed
	Nodules, size [cm] (Nodules size) * PI: Glasby, Geoffrey P * COMMENT: Maximum size of Mn nodules analysed
	Manganese [%] (Mn) * PI: Glasby, Geoffrey P * METHOD/DEVICE: X-ray fluorescence spectrometry
	Iron [%] (Fe) * PI: Glasby, Geoffrey P * METHOD/DEVICE: X-ray fluorescence spectrometry
	Cobalt [%] (Co) * PI: Glasby, Geoffrey P * METHOD/DEVICE: Atomic absorption spectrophotometry
	Nickel [%] (Ni) * PI: Glasby, Geoffrey P * METHOD/DEVICE: X-ray fluorescence spectrometry
	Copper [%] (Cu) * PI: Glasby, Geoffrey P * METHOD/DEVICE: X-ray fluorescence spectrometry
	Zinc [%] (Zn) * PI: Glasby, Geoffrey P * METHOD/DEVICE: Atomic absorption spectrophotometry
	Barium [%] (Ba) * PI: Glasby, Geoffrey P * METHOD/DEVICE: Atomic absorption spectrophotometry
	Silicon dioxide [%] (SiO2) * PI: Glasby, Geoffrey P * METHOD/DEVICE: Atomic absorption spectrophotometry
	Aluminium oxide [%] (Al2O3) * PI: Glasby, Geoffrey P
	Structure (Structure) * PI: Glasby, Geoffrey P * COMMENT: Internal structure of Mn nodules
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Status:	Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) * Processing Level: PANGAEA data processing level 3 (URI: https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_3)
Size:	450 data points
*/
Event	Latitude	Longitude	Elevation [m]	ID	Deposit type	Depth sed [m]	Nodules size [cm] (Average size of Mn nodules an...)	Nodules size [cm] (Minimum size of Mn nodules an...)	Nodules size [cm] (Maximum size of Mn nodules an...)	Mn [%] (X-ray fluorescence spectrometry)	Fe [%] (X-ray fluorescence spectrometry)	Co [%] (Atomic absorption spectrophot...)	Ni [%] (X-ray fluorescence spectrometry)	Cu [%] (X-ray fluorescence spectrometry)	Zn [%] (Atomic absorption spectrophot...)	Ba [%] (Atomic absorption spectrophot...)	SiO2 [%] (Atomic absorption spectrophot...)	Al2O3 [%]	Structure (Internal structure of Mn nodules)
VA13-2-66KA	9.3027	-146.0528	-4900	VA13-2-66KA-1GFT01	Mn nodule	0	1	0	2	28.3	5.5	0.240	1.54	1.20	0.130	0.21	18.31	8.16	Mononucleate
VA13-2-66KA	9.3027	-146.0528	-4900	VA13-2-66KA-1GFT02	Mn nodule	0	3	2	4	30.3	5.1	0.196	1.66	1.34	0.152	0.21	14.59	7.60	Mononucleate
VA13-2-66KA	9.3027	-146.0528	-4900	VA13-2-66KA-1GFT03	Mn nodule	0	5	4	6	18.5	2.6	0.110	1.17	0.91	0.115	0.15	8.56	4.78	Mononucleate
VA13-2-67GBH	9.2745	-146.0728	-5200	VA13-2-67GBH-1GFT01	Mn nodule	0	3	2	4	25.3	6.6	0.222	1.40	1.12	0.121	0.28	21.59	9.18	Mixed assemblage
VA13-2-67GBH	9.2745	-146.0728	-5200	VA13-2-67GBH-1GFT02	Mn nodule	0	5	4	6	30.9	6.3	0.181	1.43	0.99	0.180	0.23	12.64	6.46	Mixed assemblage
VA13-2-67GBH	9.2745	-146.0728	-5200	VA13-2-67GBH-1GFT03	Mn nodule	0	7	6	8	27.5	6.8	0.185	1.29	0.89	0.121	0.23	20.47	8.99	Mixed assemblage
VA13-2-73GBH	9.2521	-146.0741	-5161	VA13-2-73GBH-1GFT01	Mn nodule	0	1	0	2	23.3	10.0	0.279	1.13	0.68	0.080	0.24	25.33	9.79	Polynucleate
VA13-2-73GBH	9.2521	-146.0741	-5161	VA13-2-73GBH-1GFT02	Mn nodule	0	3	2	4	22.2	8.5	0.254	1.08	0.64	0.096	0.24	18.98	6.16	Polynucleate
VA13-2-74KA	9.2900	-146.0730	-5225	VA13-2-74KA-1GFT01	Mn nodule	0	5	4	6	27.8	9.3	0.268	1.15	0.74	0.121	0.26	12.64	9.22	Polynucleate
VA13-2-83KA	9.3459	-145.9503	-5061	VA13-2-83KA-1GFT01	Mn nodule	0	3	2	4	29.8	6.6	0.252	1.47	1.04	0.097	0.27	18.61	8.28	Mixed assemblage
VA13-2-83KA	9.3459	-145.9503	-5061	VA13-2-83KA-1GFT02	Mn nodule	0	5	4	6	23.7	10.2	0.222	0.97	0.59	0.096	0.23	17.49	9.07	Mixed assemblage
VA13-2-103GBH	9.2982	-145.9584	-5192	VA13-2-103GBH-1GFT01	Mn nodule	0	1	0	2	20.0	7.4	0.162	1.10	0.91	0.086	0.17	30.84	10.86	Mixed assemblage
VA13-2-103GBH	9.2982	-145.9584	-5192	VA13-2-103GBH-1GFT02	Mn nodule	0	3	2	4	24.3	7.3	0.212	1.32	1.07	0.112	0.14	25.59	9.35	Mixed assemblage
VA13-2-103GBH	9.2982	-145.9584	-5192	VA13-2-103GBH-1GFT03	Mn nodule	0	5	4	6	25.4	7.7	0.260	1.32	1.02	0.118	0.28	19.19	8.65	Mixed assemblage
VA13-2-103GBH	9.2982	-145.9584	-5192	VA13-2-103GBH-1GFT04	Mn nodule	0	7	6	8	25.0	11.0	0.290	0.96	0.61	0.097	0.21	17.11	7.82	Mixed assemblage
VA13-2-120GBH	9.3242	-146.0734	-5107	VA13-2-120GBH-1GFT01	Mn nodule	0	3	2	4	27.0	12.5	0.293	0.98	0.58	0.102	0.21	11.98	5.14	Polynucleate
VA13-2-120GBH	9.3242	-146.0734	-5107	VA13-2-120GBH-1GFT02	Mn nodule	0	5	4	6	25.5	13.3	0.202	0.86	0.46	0.091	0.21	12.43	4.93	Polynucleate
VA13-2-140GBH	9.4572	-145.8700	-5270	VA13-2-140GBH-1GFT01	Mn nodule	0	1	0	2	24.8	5.2	0.200	1.27	1.18	0.165	0.28	30.85	11.62	Mononucleate
VA13-2-140GBH	9.4572	-145.8700	-5270	VA13-2-140GBH-1GFT02	Mn nodule	0	5	4	6	33.0	5.7	0.195	1.54	1.24	0.181	0.23	12.43	5.67	Mononucleate
VA13-2-140GBH	9.4572	-145.8700	-5270	VA13-2-140GBH-1GFT03	Mn nodule	0	9	8	10	31.5	6.3	0.192	1.42	1.09	0.183	0.23	12.43	5.67	Mononucleate
VA13-2-155KA	9.3348	-145.9400	-4831	VA13-2-155KA-1GFT01	Mn nodule	0	1	0	2	22.9	10.4	0.267	0.98	0.57	0.090	0.18	23.96	8.84	Polynucleate
VA13-2-155KA	9.3348	-145.9400	-4831	VA13-2-155KA-1GFT02	Mn nodule	0	3	2	4	25.6	10.6	0.295	1.03	0.60	0.100	0.19	16.47	7.05	Polynucleate
VA13-2-155KA	9.3348	-145.9400	-4831	VA13-2-155KA-1GFT03	Mn nodule	0	5	4	6	29.7	8.0	0.285	1.15	0.74	0.160	0.24	12.79	5.59	Polynucleate
VA13-2-155KA	9.3348	-145.9400	-4831	VA13-2-155KA-1GFT04	Mn nodule	0	7	6	8	26.2	10.1	0.300	1.13	0.64	0.116	0.22	17.01	6.03	Polynucleate
VA13-2-165KA	9.3208	-146.0167	-5183	VA13-2-165KA-1GFT01	Mn nodule	0	1	0	2	27.1	5.4	0.188	1.51	1.20	1.250	0.19	21.97	8.64	Mononucleate
VA13-2-165KA	9.3208	-146.0167	-5183	VA13-2-165KA-1GFT02	Mn nodule	0	5	4	6	31.3	4.8	0.243	1.67	1.31	0.125	0.19	14.70	7.20	Mononucleate
VA13-2-165KA	9.3208	-146.0167	-5183	VA13-2-165KA-1GFT03	Mn nodule	0	7	6	8	31.1	5.0	0.171	1.58	1.21	0.188	0.30	12.41	6.35	Mononucleate
VA13-2-165KA	9.3208	-146.0167	-5183	VA13-2-165KA-1GFT04	Mn nodule	0	9	8	10	30.1	5.8	0.192	1.49	0.99	0.172	0.28	13.56	6.58	Mononucleate
VA13-2-167-168GBH	9.3365	-145.9830	-5044	VA13-2-167-168GBH-1GFT01	Mn nodule	0	1	0	2	28.0	8.1	0.249	1.32	0.94	0.135	0.17	8.30	7.33	Polynucleate
VA13-2-167-168GBH	9.3365	-145.9830	-5044	VA13-2-167-168GBH-1GFT02	Mn nodule	0	3	2	4	27.8	8.5	0.158	1.30	0.91	0.168	0.27	7.51	6.63	Polynucleate