Citation:

PANGAEA.962209

Name: Bulk chemical composition of pelagic sediment samples from the Central Pacific Basin, GH 79-1 detailed survey area
Published: 2023-09-21
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

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Published: 2023-09-21 • DOI registered: 2023-09-21

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Abstract:

During the ten R/V Hakurei-Maru cruises from 1984 through 1988 in the Northwestern Pacific island-arc area, a widespread occurrence of hydrogenetic iron-manganese crusts and nodules and hydrothermal manganese deposits were discovered. During shipboard survey, the wet iron-manganese minerals were stored with sea water in a refrigerator immediately after recovery from a sampler, in order to prevent mineralogical transformation on air drying. The subsamples, in both wet and air-dried conditions, were subjected to X-ray powder diffraction (XRD) analysis to ascertain structural stability upon dehydration. Powder samples dried at 110°C for 3 hours were analyzed for metal concentration by atomic absorption spectroscopy according to the Geological Survey of Japan (GSJ) standard analytical technique.

Keyword(s):

Geochemistry; manganese micronodule; manganese nodule; ocean; sediment

Related to:

Manheim, Frank T; Lane-Bostwick, C M (1989): Chemical composition of ferromanganese crusts in the world ocean: A review and comprehensive database. U.S. Geological Survey, 89–020, https://doi.org/10.3133/ofr8920V.1.1

Usui, Akira; Terashima, Shigeru (1997): Deposition of hydrogenetic and hydrothermal manganese minerals in the Ogasawara (Bonin) Arc Area, Northwest Pacific. Marine Georesources & Geotechnology, 15(2), 127-154, https://doi.org/10.1080/10641199709379941

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: 24.551886 * Median Longitude: 140.830841 * South-bound Latitude: 19.617000 * West-bound Longitude: 135.886000 * North-bound Latitude: 27.100000 * East-bound Longitude: 147.992000

Minimum Elevation: -4030.0 m * Maximum Elevation: -790.0 m

Event(s):

USU-D825 * Latitude: 26.665000 * Longitude: 141.063000 * Elevation: -930.0 m * Location: Pacific Ocean * Method/Device: Dredge (DRG) * Comment: Collected during Hakurei Maru cruises to Bonin Arc areas of the West Pacific between 1984 and 1988

USU-D826 * Latitude: 26.700000 * Longitude: 141.028000 * Elevation: -812.0 m * Location: Pacific Ocean * Method/Device: Dredge (DRG) * Comment: Collected during Hakurei Maru cruises to Bonin Arc areas of the West Pacific between 1984 and 1988

USU-D845 * Latitude: 26.430000 * Longitude: 144.280000 * Elevation: -2780.0 m * Location: Pacific Ocean * Method/Device: Dredge (DRG) * Comment: Collected during Hakurei Maru cruises to Bonin Arc areas of the West Pacific between 1984 and 1988

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 Tables 2 and 3, pp. 142-144, of Manheim, FT & Lane-Bostwick, CM (1989).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Usui, Akira
2	Latitude of event	Latitude		Usui, Akira
3	Longitude of event	Longitude		Usui, Akira
4	Elevation of event	Elevation	m	Usui, Akira
5	Identification	ID		Usui, Akira
6	Deposit type	Deposit type		Usui, Akira
7	DEPTH, sediment/rock	Depth sed	m	Usui, Akira		Geocode
8	DISTANCE	Distance	cm	Usui, Akira		Geocode
9	DISTANCE	Distance	cm	Usui, Akira		Geocode – min
10	DISTANCE	Distance	cm	Usui, Akira		Geocode – max
11	Manganese	Mn	%	Usui, Akira	Atomic absorption spectroscopy
12	Iron	Fe	%	Usui, Akira	Atomic absorption spectroscopy
13	Copper	Cu	%	Usui, Akira	Atomic absorption spectroscopy
14	Nickel	Ni	%	Usui, Akira	Atomic absorption spectroscopy
15	Cobalt	Co	%	Usui, Akira	Atomic absorption spectroscopy
16	Zinc	Zn	%	Usui, Akira	Atomic absorption spectroscopy
17	Lead	Pb	%	Usui, Akira	Atomic absorption spectroscopy
18	Silicon	Si	%	Usui, Akira	Atomic absorption spectroscopy
19	Aluminium	Al	%	Usui, Akira	Atomic absorption spectroscopy
20	Platinum	Pt	mg/kg	Usui, Akira	Atomic absorption spectroscopy	ppm
21	Water in rock	H2O	%	Usui, Akira	Wet chemistry	H2O-; Hydratation water lost after drying at 110°C
22	Description	Description		Usui, Akira		Detailed description of Mn deposit

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1760 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	8 Distance [cm]	9 Distance [cm] (min)	10 Distance [cm] (max)	11 Mn [%] (Atomic absorption spectroscopy)	12 Fe [%] (Atomic absorption spectroscopy)	13 Cu [%] (Atomic absorption spectroscopy)	14 Ni [%] (Atomic absorption spectroscopy)	15 Co [%] (Atomic absorption spectroscopy)	16 Zn [%] (Atomic absorption spectroscopy)	17 Pb [%] (Atomic absorption spectroscopy)	18 Si [%] (Atomic absorption spectroscopy)	19 Al [%] (Atomic absorption spectroscopy)	20 Pt [mg/kg] (ppm, Atomic absorption spectr...)	21 H2O [%] (H2O-; Hydratation water lost ...)	22 Description (Detailed description of Mn de...)
USU-D845	26.4300	144.2800	-2780	USU-D845-1USU-6	Mn crust	0.40	0.0	0.8	18.14	18.60	0.065	0.26	0.53	0.061	0.15	5.0	1.3	0.20	8.7	Mn crust over phosphorite rock (0.12 cm thick)
USU-D849	25.9870	143.4980	-2390	USU-D849-1USU-10C	Mn crust	0.30	0.0	0.6	17.42	17.30	0.041	0.31	0.57	0.052	0.16	5.7	1.5	0.20	8.8	Mn crust over mudstone (0.6 cm thick)
USU-D849	25.9870	143.4980	-2390	USU-D849-2USU-10N	Mn nodule	1.00	0.7	1.3	21.39	11.40	0.100	0.57	0.56	0.087	0.28	2.6	1.1	1.10	8.1	Mn nodule (6.0 cm) with 0.6 cm thick rind
USU-D851	26.1670	144.2520	-905	USU-D851-1USU-14	Mn crust	1.10	0.2	2.0	11.50	7.40	0.097	0.27	0.74	0.058	0.22	1.2	0.7	0.77	5.2	Mn crust (4.0 cm thick)
USU-D851	26.1670	144.2520	-905	USU-D851-1USU-15	Mn crust	0.50	0.0	1.0	32.08	7.30	0.264	1.05	0.85	0.119	0.30	0.6	0.4	2.39	9.1	Mn crust (2.5 cm thick)
USU-D851	26.1670	144.2520	-905	USU-D851-1USU-18	Mn crust	1.00	0.0	2.0	24.65	16.40	0.060	0.37	1.11	0.049	0.26	2.5	0.8	0.62	10.5	Mn crust (2.0 cm thick) over phosphorite rock
USU-D853	26.1630	144.1820	-790	USU-D853-1USU-12	Mn crust	1.00	0.0	2.0	14.92	5.50	0.059	0.48	0.30	0.127	0.02	1.7	1.4	0.23	6.1	Mn crust over phosphorite rock (2.0 cm thick)
USU-D854	26.0820	144.3520	-955	USU-D854-1USU-14	Mn crust	1.00	0.0	2.0	22.95	10.20	0.081	0.60	0.60	0.084	0.17	4.0	1.9	1.12	9.2	Mn crust over basalt (0.4 cm thick)
USU-D856	25.9350	144.2750	-1870	USU-D856-1USU-4	Mn crust	0.35	0.0	0.7	14.37	19.40	0.038	0.17	0.34	0.052	0.18	8.2	1.9	0.06	8.8	Mn crust over mudstone (0.7 cm thick)
USU-D858	25.3150	143.9130	-1515	USU-D858-1USU-1a	Mn crust	0.75	0.0	1.5	21.70	18.90	0.041	0.31	0.81	0.056	0.26	2.8	1.0	0.29	10.5	Large Mn crust thinly covered with younger layer (> 10.0 cm thick)
USU-D858	25.3150	143.9130	-1515	USU-D858-1USU-1b	Mn crust	3.25	2.5	4.0	24.90	14.50	0.057	0.48	0.58	0.060	0.22	2.7	0.9	0.33	9.9	Large Mn crust thinly covered with younger layer (> 10.0 cm thick)
USU-D858	25.3150	143.9130	-1515	USU-D858-1USU-1C	Mn crust	5.00	4.0	6.0	24.19	7.90	0.097	0.80	0.46	0.078	0.15	1.0	0.4	0.76	7.6	Large Mn crust thinly covered with younger layer (> 10.0 cm thick)
USU-D859	25.2230	143.9280	-1560	USU-D859-1USU-11	Mn crust	1.00	0.0	2.0	22.94	13.80	0.081	0.55	0.72	0.063	0.18	4.3	1.5	0.79	9.8	Botryoidal Mn crust fragment (2.0 cm thick)
USU-D859	25.2230	143.9280	-1560	USU-D859-1USU-5	Mn crust	1.50	0.0	3.0	20.62	10.90	0.130	0.50	0.38	0.063	0.14	2.5	0.7	0.80	7.5	Mn crust fragment (2.0 cm thick)
USU-D862	25.2720	144.0820	-2500	USU-D862-1USU-1	Mn crust	1.25	0.5	2.0	15.87	19.50	0.073	0.26	0.33	0.062	0.15	5.7	1.5	0.14	10.1	Mn crust fragment (3.5 cm thick)
USU-D866	26.1720	145.0680	-1250	USU-D866-1USU-1a	Mn crust	1.15	0.3	2.0	12.42	15.90	0.092	0.37	0.21	0.070	0.03	11.4	4.8	0.13	6.7	Mn crust thinly covered with younger layer (2.3 cm thick)
USU-D866	26.1720	145.0680	-1250	USU-D866-1USU-1b	Mn crust	3.00	2.0	4.0	19.09	16.40	0.074	0.39	0.40	0.060	0.18	5.8	2.2	0.19	11.1	Mn crust thinly covered with younger layer (2.3 cm thick)
USU-D867	26.2500	145.1550	-1100	USU-D867-1USU-1	Mn crust	1.15	0.3	2.0	21.41	18.20	0.046	0.28	0.56	0.048	0.22	4.2	1.1	0.18	12.0	Mn crust over mudstone (2.0 cm thick)
USU-D867	26.2500	145.1550	-1100	USU-D867-2USU-3	Mn crust	3.00	2.0	4.0	27.65	6.00	0.082	0.84	0.63	0.078	0.17	0.7	0.3	0.43	9.2	Large Mn crust thinly covered with younger layer (12.0 cm thick)
USU-D869	26.9020	145.5070	-1250	USU-D869-1USU-2	Mn nodule	0.75	0.0	1.5	23.25	14.00	0.070	0.77	0.53	0.081	0.16	4.3	1.5	0.12	11.3	Mn nodule of 4.0 cm diameter (1.5 cm thick rind)
USU-D879	25.8470	147.7980	-1415	USU-D879-1USU-9	Mn crust	1.10	0.0	2.2	15.10	17.60	0.086	0.28	0.73	0.056	0.20	7.6	2.4	0.58	9.4	Mn crust fragment (2.2 cm thick)
USU-D881	25.7520	147.9920	-1375	USU-D881-1USU-1	Mn crust	1.00	0.0	2.0	22.48	17.10	0.048	0.37	0.76	0.047	0.23	4.1	0.9	0.20	11.6	Mn crust over altered volcanic (2.0 cm thick)
USU-D883	25.7970	146.7470	-1470	USU-D883-1USU-1	Mn crust	0.50	0.0	1.0	24.77	4.80	0.151	1.06	0.50	0.126	0.16	1.3	0.7	0.86	9.0	Mn crust over phosphorite rock (1.0 cm thick)
USU-D884	25.7930	146.7830	-1395	USU-D884-1USU-1	Mn crust	0.40	0.0	0.8	21.52	15.20	0.078	0.33	0.67	0.060	0.18	5.1	1.8	0.22	11.1	Mn crust over volcanic breccia (0.8 cm thick)
USU-D886	27.1000	145.2080	-1885	USU-D886-1USU-1a	Mn crust	0.40	0.0	0.8	18.50	19.00	0.045	0.29	0.38	0.060	0.20	5.6	1.1	0.14	11.6	Mn crust over phosphorite rock (2.0 cm thick)
USU-D886	27.1000	145.2080	-1885	USU-D886-1USU-1b	Mn crust	1.20	0.8	1.6	19.35	9.80	0.087	0.38	0.24	0.067	0.16	1.3	0.3	0.47	9.3	Mn crust over phosphorite rock (2.0 cm thick)
USU-D1012	19.7260	135.8860	-3330	USU-D1012-1USU-4	Mn crust	0.75	0.0	1.5	16.18	21.30	0.104	0.20	0.28	0.065	0.15	6.6	1.7	0.11	10.4	Fragment of Mn crust (1.5 cm thick)
USU-D1013	19.6170	135.9310	-2220	USU-D1013-1USU-6	Mn crust	0.40	0.0	0.8	17.15	18.70	0.126	0.31	0.29	0.059	0.15	6.7	2.1	0.14	11.1	Mn crust over phosphate rock (0.8 cm thick)
USU-D1014	19.6200	135.9890	-1328	USU-D1014-1USU-1a	Mn crust	0.35	0.0	0.7	19.02	20.90	0.041	0.26	0.47	0.054	0.22	4.6	0.9	0.25	12.5	Mn crust over phosphate rock (1.5 cm thick)
USU-D1014	19.6200	135.9890	-1328	USU-D1014-1USU-1b	Mn crust	1.10	0.7	1.5	19.15	20.10	0.075	0.30	0.30	0.052	0.17	4.6	1.4	0.25	15.2	Mn crust over phosphate rock (1.5 cm thick)
USU-D1014	19.6200	135.9890	-1328	USU-D1014-1USU-5a	Mn crust	0.25	0.0	0.5	18.47	20.30	0.046	0.26	0.51	0.056	0.21	4.6	1.0	0.15	13.9	Mn crust over phosphate rock (1.5 cm thick)
USU-D1014	19.6200	135.9890	-1328	USU-D1014-1USU-5b	Mn crust	0.95	0.5	1.4	18.61	20.30	0.080	0.27	0.36	0.051	0.17	5.2	1.4	0.40	11.2	Mn crust over phosphate rock (1.5 cm thick)
USU-D1014	19.6200	135.9890	-1328	USU-D1014-1USU-6a	Mn crust	0.30	0.0	0.6	14.45	20.10	0.063	0.20	0.33	0.052	0.16	7.8	2.3	0.22	11.2	Brownish Mn crust over phosphate rock (1.5 cm thick)
USU-D1014	19.6200	135.9890	-1328	USU-D1014-1USU-6b	Mn crust	1.05	0.6	1.5	14.49	21.30	0.075	0.23	0.25	0.051	0.15	6.5	2.1	0.40	11.7	Brownish Mn crust over phosphate rock (1.5 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-1a	Mn crust	0.25	0.0	0.5	13.68	20.00	0.064	0.22	0.22	0.062	0.17	9.8	2.6	0.16	10.5	Mn crust over phosphate rock (1.4 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-1b	Mn crust	0.95	0.5	1.4	17.86	19.90	0.116	0.34	0.26	0.074	0.18	5.0	1.5	0.10	12.0	Mn crust over phosphate rock (1.4 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-1a	Mn crust	1.05	0.0	2.1	16.90	19.30	0.099	0.34	0.29	0.076	0.17	6.6	1.9	0.20	10.2	Mn crust over volcanic breccia (3.8 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-1b	Mn crust	1.00	0.0	2.0	14.89	17.50	0.095	0.26	0.20	0.064	0.15	9.0	3.0	0.21	8.8	Mn crust over volcanic breccia (3.8 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-1c	Mn crust	2.75	2.0	3.5	13.74	18.40	0.305	0.51	0.13	0.114	0.08	9.5	3.8	0.22	10.1	Mn crust over volcanic breccia (3.8 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-1d	Mn crust	3.65	3.5	3.8	7.10	29.10	0.096	0.08	0.08	0.148	0.11	7.2	1.9	0.20	10.3	Mn crust over volcanic breccia (3.8 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-4	Mn crust	0.50	0.0	1.0	13.41	18.00	0.316	0.46	0.15	0.102	0.08	9.3	3.5	0.49	9.9	Mn crust over mudstone (1.0 cm thick)
USU-D1018	20.4040	135.9960	-2220	USU-D1018-1USU-7	Mn crust	1.00	0.0	2.0	16.75	19.80	0.071	0.28	0.33	0.061	0.16	8.0	2.0	0.17	11.2	Mn crust over mudstone (2.0 cm thick)
USU-D1019	20.4490	136.1760	-2078	USU-D1019-1USU-1a	Mn crust	0.00	0.0	0.0	21.55	18.50	0.029	0.35	0.87	0.055	0.19	3.8	0.8	0.20	11.8	Mn crust fragment (3.2 cm thick) with growth cusps
USU-D1019	20.4490	136.1760	-2078	USU-D1019-1USU-1b	Mn crust	1.70	0.4	3.0	16.43	19.90	0.097	0.32	0.32	0.054	0.16	6.6	1.9	0.19	10.9	Mn crust fragment (3.2 cm thick) with growth cusps
USU-D1019	20.4490	136.1760	-2078	USU-D1019-1USU-1C	Mn crust	0.20	0.0	0.4	17.81	19.60	0.046	0.27	0.44	0.051	0.16	5.7	1.4	0.20	11.0	Mn crust fragment (3.2 cm thick) with growth cusps
USU-D1019	20.4490	136.1760	-2078	USU-D1019-1USU-2a	Mn crust	0.25	0.0	0.5	17.55	18.70	0.043	0.27	0.43	0.051	0.16	5.5	1.4	0.24	10.4	Mn crust fragment (0.5 cm thick) with growth cusps
USU-D1019	20.4490	136.1760	-2078	USU-D1019-1USU-2b	Mn crust	1.75	0.5	3.0	15.85	18.80	0.087	0.31	0.35	0.058	0.15	6.5	2.1	0.34	10.9	Mn crust fragment (0.5 cm thick) with growth cusps
USU-D1020	21.3000	136.3500	-2270	USU-D1020-1USU-1a	Mn crust	0.60	0.0	1.2	20.12	21.00	0.079	0.30	0.58	0.057	0.22	4.0	0.9	0.71	11.8	Mn crust fragment (2.2 cm thick)
USU-D1020	21.3000	136.3500	-2270	USU-D1020-1USU-1b	Mn crust	1.50	0.8	2.2	15.94	22.20	0.067	0.22	0.26	0.060	0.19	6.1	1.5	0.19	11.8	Mn crust fragment (2.2 cm thick)
USU-D1020	21.3000	136.3500	-2270	USU-D1020-1USU-2a	Mn crust	0.30	0.0	0.6	19.80	20.20	0.063	0.30	0.66	0.056	0.20	4.6	1.1	0.37	11.6	Mn crust fragment (3.0 cm thick) with cusps filed with clay
USU-D1020	21.3000	136.3500	-2270	USU-D1020-1USU-2b	Mn crust	1.80	0.6	3.0	15.34	20.30	0.079	0.26	0.34	0.052	0.16	7.1	2.0	0.44	11.6	Mn crust fragment (3.0 cm thick) with cusps filed with clay
USU-D1020	21.3000	136.3500	-2270	USU-D1020-1USU-3a	Mn crust	0.15	0.0	0.3	18.16	20.60	0.040	0.26	0.62	0.057	0.21	5.5	1.4	0.19	9.6	Mn crust fragment (2.3 cm thick) with cusps filed with clay
USU-D1020	21.3000	136.3500	-2270	USU-D1020-1USU-3b	Mn crust	1.30	0.3	2.3	13.99	20.50	0.082	0.22	0.31	0.051	0.16	7.7	2.3	0.34	11.5	Mn crust fragment (2.3 cm thick) with cusps filed with clay
USU-D1021	21.2840	136.5220	-2320	USU-D1021-1USU-1	Mn coating	0.20	0.0	0.4	15.63	18.10	0.060	0.23	0.30	0.051	0.15	7.4	1.9	0.19	11.1	Mn coating on pumice (0.4 cm thick)
USU-D1021	21.2840	136.5220	-2320	USU-D1021-2USU-10a	Mn nodule	0.40	0.0	0.8	17.45	19.40	0.117	0.31	0.29	0.073	0.16	5.9	1.7	0.12	10.4	Mn nodule (5.6 cm)
USU-D1021	21.2840	136.5220	-2320	USU-D1021-2USU-10b	Mn nodule	1.15	0.8	1.5	22.03	17.70	0.124	0.48	0.41	0.069	0.17	3.8	1.2	0.18	10.8	Mn nodule (5.6 cm)
USU-D1021	21.2840	136.5220	-2320	USU-D1021-2USU-10c	Mn nodule	1.85	1.5	2.2	16.78	18.10	0.085	0.32	0.29	0.055	0.14	6.9	2.3	0.45	9.8	Mn nodule (5.6 cm)
USU-D1021	21.2840	136.5220	-2320	USU-D1021-2USU-9a	Mn nodule	0.60	0.0	1.2	18.04	18.90	0.135	0.34	0.29	0.068	0.15	6.9	2.2	0.25	11.9	Mn nodule (5.8 cm)
USU-D1021	21.2840	136.5220	-2320	USU-D1021-2USU-9b	Mn nodule	1.20	1.2	1.2	15.15	19.20	0.094	0.29	0.19	0.062	0.12	8.5	2.8	0.21	10.6	Mn nodule (5.8 cm)
USU-D1022	21.2830	136.5370	-2120	USU-D1022-1USU-101	Mn coating	0.15	0.0	0.3	18.37	19.80	0.094	0.30	0.32	0.063	0.17	5.9	1.6	0.17	10.4	Mn coating of silicified rock (max. 0.6 cm thick)
USU-D1022	21.2830	136.5370	-2120	USU-D1022-2USU-2a	Mn nodule	1.00	0.0	2.0	16.77	20.70	0.065	0.26	0.31	0.057	0.17	6.0	1.6	0.13	8.2	Mn nodule (7.0 cm) with 3.5 cm thick rind
USU-D1022	21.2830	136.5370	-2120	USU-D1022-2USU-2b	Mn nodule	2.30	2.0	2.6	14.85	19.80	0.087	0.30	0.22	0.067	0.16	7.6	2.5	0.21	10.3	Mn nodule (7.0 cm) with 3.5 cm thick rind
USU-D1022	21.2830	136.5370	-2120	USU-D1022-2USU-2c	Mn nodule	3.05	2.6	3.5	13.53	18.70	0.078	0.29	0.17	0.066	0.13	8.7	3.0	0.23	9.7	Mn nodule (7.0 cm) with 3.5 cm thick rind
USU-D1022	21.2830	136.5370	-2120	USU-D1022-2USU-6a	Mn nodule	0.25	0.0	0.5	18.07	19.40	0.147	0.33	0.30	0.070	0.17	6.1	2.0	0.18	11.8	Mn nodule (4.0 cm) with 1.7 cm thick rind
USU-D1022	21.2830	136.5370	-2120	USU-D1022-2USU-6b	Mn nodule	1.00	0.5	1.5	15.39	19.90	0.114	0.29	0.18	0.068	0.16	7.5	2.5	0.09	11.6	Mn nodule (4.0 cm) with 1.7 cm thick rind
USU-D1022	21.2830	136.5370	-2120	USU-D1022-2USU-7	Mn nodule	0.75	0.0	1.5	17.71	20.00	0.096	0.33	0.29	0.067	0.17	5.9	1.7	0.15	12.5	Mn nodule (6.0 cm) with 1.3 cm thick rind
USU-D1023	21.7570	136.6260	-1855	USU-D1023-1USU-1	Mn crust	0.60	0.0	1.2	14.45	20.00	0.057	0.20	0.24	0.059	0.17	8.5	2.1	0.07	10.0	Mn crust over limestone (1.2 cm thick)
USU-D1023	21.7570	136.6260	-1855	USU-D1023-1USU-2	Mn crust	0.50	0.0	1.0	15.33	20.40	0.056	0.21	0.27	0.051	0.17	7.1	1.7	0.10	11.6	Mn crust over limestone (1.0 cm thick)
USU-D1025	22.1260	136.7380	-2783	USU-D1025-1USU-2	Mn crust	1.25	0.0	2.5	18.49	21.00	0.078	0.27	0.54	0.052	0.18	4.1	1.1	0.56	11.9	Dense Mn crust fragment (2.6 cm thick)
USU-D1025	22.1260	136.7380	-2783	USU-D1025-1USU-3	Mn crust	0.60	0.0	1.2	21.43	20.00	0.056	0.31	0.65	0.053	0.19	3.7	0.8	0.33	13.1	Dense Mn crust fragment (1.3 cm thick)
USU-D1026	22.9880	137.0000	-2510	USU-D1026-1USU-1a	Mn nodule	0.25	0.0	0.5	20.88	16.80	0.151	0.56	0.27	0.076	0.13	5.7	1.7	0.19	13.5	Mn nodule (9.0 cm) with 1.4 cm thick rind
USU-D1026	22.9880	137.0000	-2510	USU-D1026-1USU-1b	Mn nodule	0.95	0.5	1.4	17.47	19.10	0.170	0.33	0.25	0.064	0.13	7.2	2.3	0.19	13.8	Mn nodule (9.0 cm) with 1.4 cm thick rind
USU-D1026	22.9880	137.0000	-2510	USU-D1026-1USU-4a	Mn nodule	0.30	0.0	0.6	18.73	20.40	0.119	0.30	0.26	0.066	0.16	5.5	1.5	0.17	14.2	Mn nodule (5.5 cm) with 1.0 cm thick rind
USU-D1026	22.9880	137.0000	-2510	USU-D1026-1USU-4b	Mn nodule	0.80	0.6	1.0	20.86	18.60	0.143	0.37	0.29	0.069	0.14	5.0	1.7	0.17	14.1	Mn nodule (5.5 cm) with 1.0 cm thick rind
USU-D1026	22.9880	137.0000	-2510	USU-D1026-1USU-5a	Mn nodule	0.35	0.0	0.7	17.80	20.60	0.108	0.26	0.25	0.062	0.16	6.2	1.8	0.15	13.2	Mn nodule (3.3 cm) with 1.4 cm thick rind
USU-D1026	22.9880	137.0000	-2510	USU-D1026-1USU-5b	Mn nodule	1.05	0.7	1.4	21.01	20.00	0.120	0.32	0.29	0.068	0.16	4.2	1.2	0.16	12.5	Mn nodule (3.3 cm) with 1.4 cm thick rind
USU-D1027	23.0120	137.0050	-3260	USU-D1027-1USU-1a	Mn nodule	0.35	0.0	0.7	24.08	17.00	0.064	0.39	0.62	0.053	0.14	3.4	1.0	0.17	10.6	Mn nodule (10.5 cm) with 1.2 cm thick rind
USU-D1027	23.0120	137.0050	-3260	USU-D1027-1USU-1b	Mn nodule	0.95	0.7	1.2	12.89	18.70	0.073	0.18	0.20	0.050	0.13	9.4	3.2	0.10	9.6	Mn nodule (10.5 cm) with 1.2 cm thick rind
USU-D1027	23.0120	137.0050	-3260	USU-D1027-1USU-6a	Mn nodule	0.25	0.0	0.5	19.58	17.30	0.090	0.30	0.44	0.046	0.13	6.8	1.9	0.19	11.5	Mn nodule (7.2 cm) with 1.1 cm thick rind
USU-D1027	23.0120	137.0050	-3260	USU-D1027-1USU-6b	Mn nodule	0.80	0.5	1.1	14.78	19.80	0.114	0.22	0.22	0.060	0.14	8.2	2.5	0.13	12.3	Mn nodule (7.2 cm) with 1.1 cm thick rind
USU-D1027	23.0120	137.0050	-3260	USU-D1027-1USU-9a	Mn nodule	0.35	0.0	0.7	13.97	19.60	0.079	0.18	0.24	0.051	0.14	9.3	2.5	0.13	11.8	Mn nodule (6.3 cm) with 1.4 cm thick rind
USU-D1027	23.0120	137.0050	-3260	USU-D1027-1USU-9b	Mn nodule	1.05	0.7	1.4	15.24	19.40	0.127	0.23	0.20	0.064	0.13	8.3	2.7	0.14	12.1	Mn nodule (6.3 cm) with 1.4 cm thick rind
USU-D1028	23.0260	137.0140	-4030	USU-D1028-1USU-10	Mn nodule	0.35	0.0	0.7	14.49	20.80	0.109	0.19	0.19	0.060	0.13	7.9	2.4	0.19	11.3	Mn nodule (3.4 cm) with 0.7 cm thick rind
USU-D1028	23.0260	137.0140	-4030	USU-D1028-2USU-11	Mn crust	0.60	0.0	1.2	21.00	10.20	0.547	0.75	0.08	0.119	0.03	9.4	3.9	0.12	9.6	Laminated Mn crust fragment (1.2 cm thick)
USU-D1028	23.0260	137.0140	-4030	USU-D1028-2USU-12	Mn crust	1.30	0.0	2.6	13.00	25.40	0.084	0.12	0.15	0.068	0.12	6.4	2.0	0.10	11.0	Laminated Mn crust fragment (2.7 cm thick)
USU-D1028	23.0260	137.0140	-4030	USU-D1028-2USU-4a	Mn crust	0.40	0.0	0.8	14.31	24.70	0.065	0.10	0.16	0.055	0.14	7.0	1.6	0.12	11.9	Laminated Mn crust fragment (4.0 cm thick)
USU-D1028	23.0260	137.0140	-4030	USU-D1028-2USU-4b	Mn crust	1.20	0.8	1.6	15.27	22.60	0.065	0.13	0.17	0.056	0.14	7.0	1.8	0.13	11.4	Laminated Mn crust fragment (4.0 cm thick)
USU-D1028	23.0260	137.0140	-4030	USU-D1028-2USU-4C	Mn crust	2.05	1.6	2.5	16.00	23.50	0.069	0.14	0.15	0.060	0.12	6.2	1.7	0.09	11.5	Laminated Mn crust fragment (4.0 cm thick)
USU-D1028	23.0260	137.0140	-4030	USU-D1028-2USU-4d	Mn crust	2.90	2.5	3.3	14.99	23.90	0.074	0.13	0.13	0.065	0.13	6.6	1.9	0.08	10.9	Laminated Mn crust fragment (4.0 cm thick)
USU-D1029	23.6520	136.8690	-2393	USU-D1029-1USU-1a	Mn coating	0.40	0.0	0.8	25.30	13.90	0.138	0.82	0.44	0.096	0.13	3.5	1.6	0.21	12.3	Mn coating (0.8 cm thick) with interlayed hydrothermal material
USU-D1029	23.6520	136.8690	-2393	USU-D1029-1USU-1b	Mn coating	1.40	0.8	2.0	15.05	15.80	0.142	0.29	0.20	0.062	0.11	9.5	3.4	0.18	10.8	Mn coating (0.8 cm thick) with interlayed hydrothermal material
USU-D1029	23.6520	136.8690	-2393	USU-D1029-1USU-1c	Mn coating	0.05	0.0	0.1	13.66	21.10	0.099	0.15	0.15	0.062	0.16	8.9	2.4	0.15	10.9	Mn coating (0.8 cm thick) with interlayed hydrothermal material
USU-D1029	23.6520	136.8690	-2393	USU-D1029-1USU-1d	Mn coating	0.25	0.1	0.4	14.04	22.60	0.121	0.17	0.16	0.069	0.15	7.9	2.2	0.21	10.6	Mn coating (0.8 cm thick) with interlayed hydrothermal material
USU-D1029	23.6520	136.8690	-2393	USU-D1029-1USU-2a	Mn coating	0.70	0.0	1.4	16.20	21.80	0.075	0.23	0.23	0.061	0.16	6.5	1.8	0.16	10.9	Mn coating (2.0 cm thick) on mudstone
USU-D1029	23.6520	136.8690	-2393	USU-D1029-1USU-2b	Mn coating	1.70	1.4	2.0	13.62	19.50	0.092	0.21	0.15	0.064	0.12	9.0	3.1	0.15	10.1	Mn coating (2.0 cm thick) on mudstone
USU-D1029	23.6520	136.8690	-2393	USU-D1029-2USU-4	Mn nodule	0.40	0.0	0.8	14.95	20.80	0.101	0.20	0.22	0.060	0.16	8.0	2.2	0.14	11.7	Mn nodule (6.5 cm) with 0.8 cm thick rind. Hydrothermal material as core
USU-D1029	23.6520	136.8690	-2393	USU-D1029-2USU-8	Mn nodule	0.25	0.0	0.5	16.52	20.30	0.115	0.24	0.22	0.067	0.15	7.9	2.2	0.17	10.6	Mn nodule (6.5 cm) with 0.5 cm thick rind. Hydrothermal material as core
USU-D1030	23.7310	136.7840	-1590	USU-D1030-1USU-1a	Mn crust	1.00	0.0	2.0	17.89	20.00	0.052	0.21	0.34	0.060	0.18	6.5	1.5	0.12	11.5	Composite Mn crust (10.0 cm thick) with breccia inside
USU-D1030	23.7310	136.7840	-1590	USU-D1030-1USU-1b	Mn crust	0.75	0.0	1.5	22.10	19.70	0.031	0.36	0.58	0.050	0.20	3.6	0.9	0.44	13.4	Composite Mn crust (10.0 cm thick) with breccia inside
USU-D1030	23.7310	136.7840	-1590	USU-D1030-1USU-1c	Mn crust	2.25	2.0	2.5	15.12	18.10	0.063	0.25	0.17	0.047	0.15	8.1	2.8	0.35	14.2	Composite Mn crust (10.0 cm thick) with breccia inside
USU-D1030	23.7310	136.7840	-1590	USU-D1030-2USU-11	Mn nodule	0.35	0.0	0.7	19.70	18.10	0.094	0.43	0.27	0.075	0.15	6.1	1.8	0.31	13.4	Mn nodule (5.0 cm) with 0.7 thick rind
USU-D1030	23.7310	136.7840	-1590	USU-D1030-2USU-13	Mn nodule	0.50	0.0	1.0	19.32	17.20	0.116	0.45	0.30	0.077	0.15	7.0	2.5	0.22	13.9	Mn nodule (4.3 cm) with 1.0 thick rind
USU-D1030	23.7310	136.7840	-1590	USU-D1030-1USU-2a	Mn crust	0.25	0.0	0.5	18.79	20.20	0.027	0.23	0.43	0.050	0.20	5.5	1.2	0.16	13.1	Mn crust fragment (4.5 cm across)
USU-D1030	23.7310	136.7840	-1590	USU-D1030-1USU-2b	Mn crust	2.25	2.0	2.5	16.88	20.10	0.042	0.24	0.15	0.050	0.15	6.9	2.1	0.26	13.4	Mn crust fragment (4.5 cm across)
USU-D1030	23.7310	136.7840	-1590	USU-D1030-2USU-9	Mn nodule	0.50	0.0	1.0	21.21	19.70	0.030	0.35	0.57	0.050	0.19	3.9	0.9	0.41	14.3	Mn nodule (5.0 cm) with 1.6 thick rind
USU-D1031	23.6680	136.7850	-2020	USU-D1031-1USU-1a	Mn crust	0.40	0.0	0.8	18.94	20.20	0.055	0.29	0.25	0.063	0.19	5.0	1.1	0.13	13.5	Composite Mn crust (12.0 thick) large columns with brown infillings. Alsà found on mudstone (1.2 cm thick)
USU-D1031	23.6680	136.7850	-2020	USU-D1031-1USU-1b	Mn crust	1.65	0.8	2.5	11.74	18.90	0.062	0.15	0.13	0.054	0.11	10.2	3.3	0.18	9.4	Composite Mn crust (12.0 thick) large columns with brown infillings. Alsà found on mudstone (1.2 cm thick)
USU-D1031	23.6680	136.7850	-2020	USU-D1031-1USU-1S	Mn crust	0.50	0.0	1.0	21.26	18.40	0.090	0.45	0.53	0.078	0.17	4.6	1.3	0.24	12.0	Composite Mn crust (12.0 thick) large columns with brown infillings. Alsà found on mudstone (1.2 cm thick)
USU-D1031	23.6680	136.7850	-2020	USU-D1031-1USU-2	Mn crust	0.60	0.0	1.2	16.52	19.30	0.066	0.22	0.23	0.058	0.17	7.6	1.9	0.11	11.1	Mn crust over mudstone (1.2 cm thick)
USU-D1032	23.5810	136.7850	-2542	USU-D1032-1USU-1a	Mn coating	0.40	0.0	0.8	12.25	19.80	0.062	0.16	0.21	0.050	0.13	9.2	2.5	0.14	10.2	Mn coating (0.8 cm thick)
USU-D1032	23.5810	136.7850	-2542	USU-D1032-1USU-1b	Mn coating	0.15	0.0	0.3	15.88	22.50	0.052	0.19	0.26	0.064	0.19	6.2	1.5	0.13	12.0	Mn coating (0.8 cm thick)
USU-D1032	23.5810	136.7850	-2542	USU-D1032-2USU-4a	Mn nodule	0.00	0.0	0.0	19.32	17.60	0.105	0.47	0.38	0.075	0.14	5.9	2.3	0.25	12.1	Mn nodule (15.0 cm) with 1.5 cm thick rind
USU-D1032	23.5810	136.7850	-2542	USU-D1032-2USU-4b	Mn nodule	0.70	0.0	1.4	15.35	20.50	0.080	0.18	0.20	0.059	0.16	7.5	1.9	0.14	11.0	Mn nodule (15.0 cm) with 1.5 cm thick rind
USU-D1032	23.5810	136.7850	-2542	USU-D1032-2USU-8	Mn nodule	0.60	0.0	1.2	15.91	19.50	0.122	0.25	0.23	0.064	0.16	7.7	2.2	0.18	11.3	Mn nodule (4.0 cm) with 1.2 cm thick rind
USU-D1032	23.5810	136.7850	-2542	USU-D1032-2USU-9	Mn nodule	0.45	0.0	0.9	16.51	19.20	0.121	0.27	0.25	0.062	0.16	7.6	2.1	0.18	10.9	Mn nodule (4.0 cm) with 0.9 cm thick rind
USU-D825	26.6650	141.0630	-930	USU-D825-1USU-10	Mn crust				39.43	0.15	35.000	88.00	8.00	101.000	10.00					Dense Mn crust (hydrothermal deposit) with submetallic dense gray layer
USU-D826	26.7000	141.0280	-812	USU-D826-1USU-11	Mn crust				45.86	0.29	22.000	6.00	10.00	32.000	13.00					Dense Mn crust (hydrothermal deposit) with submetallic dense gray layer
USU-RS18	26.6820	140.8970	-1097	USU-RS18-1USU-5-1	Mn crust				41.13	3.18	310.000	1.00	21.00	22.000	1.00					Mn crusts (hydrothermal deposit) with submetallic dense gray layer
USU-RS18	26.6820	140.8970	-1097	USU-RS18-1USU-5-2	Mn crust				37.88	1.35	329.000	25.00	55.00	44.000	14.00					Mn crusts (hydrothermal deposit) with submetallic dense gray layer
USU-RS30	26.6670	140.8980	-1012	USU-RS30-1USU-2	Mn crust				17.39	4.30	85.000	164.00	34.00	134.000	1.00					Mn crust with sand matrix and small cusps
USU-RS30	26.6670	140.8980	-1012	USU-RS30-1USU-4	Mn crust				40.55	1.01	91.000	177.00	29.00	182.000	23.00					Mn crust with sand matrix and small cusps
USU-RS31	26.6830	140.2170	-1304	USU-RS31-1USU-4	Mn crust				16.30	4.17	100.000	74.00	27.00	122.000	25.00					Mn crust with sand matrix and fibrous cusps
USU-RS31	26.6830	140.2170	-1304	USU-RS31-1USU-6	Mn crust				45.28	0.57	88.000	27.00	30.00	48.000	<1.00					Mn crust with sand matrix and fibrous cusps
USU-RS33	26.7170	140.7830	-1257	USU-RS33-1USU-3	Mn coating				28.32	2.89	144.000	168.00	28.00	194.000	16.00					Submetallic layers overlain by a sand layer cemented with manganese oxide
USU-RS40	26.6680	140.8820	-1272	USU-RS40-1USU-8-1	Mn crust				39.34	4.13	163.000	6.00	8.00	30.000	1.00					Mn crusts (hydrothermal deposit) with submetallic dense gray layer
USU-RS40	26.6680	140.8820	-1272	USU-RS40-1USU-8-2	Mn crust				30.30	2.44	161.000	84.00	35.00	112.000	<1.00					Mn crusts (hydrothermal deposit) with submetallic dense gray layer
USU-RS48	26.6850	140.9170	-845	USU-RS48-1USU-1	Mn coating				46.24	0.23	358.000	5.00	34.00	38.000	18.00					Submetallic layers overlain by a sand layer cemented with manganese oxide
USU-RS42	26.7050	140.9420	-1157	USU-RS42-1USU-6	Mn crust				11.46	5.53	157.000	193.00	33.00	321.000	30.00					Mn crust with sand matrix
USU-RC449	26.7000	140.9170	-1147	USU-RC449-1USU-1	Mn crust				45.15	0.51	355.000	45.00	34.00	61.000	14.00					Mn crusts with sand matrix
USU-RC449	26.7000	140.9170	-1147	USU-RC449-1USU-2	Mn crust				28.61	1.65	53.000	193.00	29.00	152.000	13.00					Mn crusts with sand matrix