-
Chemical analyses of ferromanganese oxide crusts from the Indian Ocean
A suite of ferromanganese oxide crust specimens was collected by R.R.S. Shackleton in 1975 as part of the continuing study at Imperial College of North West Indian Ocean nodules... -
Selected minor element chemical analyses of manganese nodules and crusts from...
Ferromanganese nodules and encrustations have been analysed for selected minor elements (mainly Cd, Cr and Ti) by atomic absorption spectrophotometry. The preparation of... -
Chemical composition of ferromanganese crusts and manganese nodules from the ...
Excess 230Th dominates the alpha activity of the surface regions of manganese nodules and deep sea sediments. If uranium series eguilibrium is maintained, total alpha activity... -
(Table 1, Page 181 Chemical analysis of a manganese nodule from the Pacific O...
A seabed nuclear probe which was designed to measure up to 30 elements at parts per thousand to parts per hundred levels has been tested for the analysis of simulated manganese... -
(Tables 3-4, pages 112-115) Chemical composition of Fe-Mn micronodules from m...
A geochemical study of Fe-Mn micronodules associated with the metalliferous sediments at two spreading centres has shown that their composition depends on the site of... -
Chemical composition of ocean manganese nodules using Neutron activation anal...
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other... -
Description of manganese deposits collected by RV Spencer F. Baird during the...
Fifty-five rock fragments and pebbles were dredged at 2,550-2,800 fathoms (4,650-5,100 metres) near Jimmu Seamount, 700 miles southeast of Kamchatka. Tuffaceous shale, andesitic... -
Lithium concentration in manganese nodules of the Pacific Ocean (Hakurei Maru...
Various manganese nodules donated to the Scripps Institution of Oceanography from the Hakurei Maru Cruise GH77-1, January-March, 1977, in the Central Pacific Basin have been... -
(Table 1, page 754) Estimated concentrations of various elements in nineteen ...
Using spectrochemical techniques Fe, Si, Mg, Co, Ni, Cu, V, Mo, Ti and Tl have been estimated in nineteen manganese nodules, eight from the Atlantic ocean, seven from the... -
(Table 1, page 434-435) Bulk chemical composition of S.W. Pacific island arc ...
Hydrothermal Mn-oxide crusts have been removed from the Tonga-Kermadec Ridge, the first such hydrothermal deposits to be reported in the S.W. Pacific island arc. In several... -
(Table 2, page 17-18), Elemental composition of ferromanganese crust in lakes...
Analyses for Fe, Mn, Pb, Zn, Co, P, Mo, Ba, Sr, Ti, Li, Rb, Na, K, Be, Cr, V, Y, Ag, Cu, C, S, Sn, Ni, Ga, Zr, and La have been carried out on some oxidate crusts, oxidized... -
(Tables 41-42, page 88-89), Chemical composition of lake ores of Finland and ...
This text deals with the geochemistry of iron ores. By means of spectrochemical analyses some significant minor constituents have been determined in samples mainly from the... -
(Table 1, page 204), Minor element concentrations in nodules of lake Ontario ...
Spark source mass spectroscopy was used to analyze 61 elements in ten ferromanganese nodules found near Glenora in the Bay of Quinte at the eastern end of Lake Ontario. Most... -
Lead and strontium isotopic composition of some metalliferous and pelagic sed...
In recent years, metalliferous sediments have been discovered overlying newly generated oceanic crust in the East Pacific, North Atlantic, Indian Ocean, Red Sea, Gulf of Aden,... -
Pacific, Indian and Atlantic ocean manganese nodules and crusts analyzed at S...
The Marine Minerals Database contains geochemical analyses and auxiliary information on present-day marine deposits of primarily ferromanganese nodules and crusts. Some data for... -
Relationships between the Fe-Mn deposits from the Romanche Trench and its hyd...
The geological characteristics and Fe-Mn deposits from the North wall of the Romanche trench (Atlantic ocean) were studied in order to investigate possible relationships of... -
Accumulation rates of manganese in pelagic sediments and nodules
Accumulation rates of manganese in sediments of thirty-eight deep-sea cores range from 0.1 to 3.4 mg/cm²/ka. Manganese accumulation rates in five nodules range from 0.2 to 1.0... -
Detailed mineralogy and chemical composition of manganese nodules retrieved f...
The structure of the principal manganese minerals of the nodules, todorokite and birnes- site, is determined by the structure of hydrated manganese dioxide. Using this fact and... -
Morphology and chemical composition of ferromanganese deposits in the Southwe...
An extensive field of iron-rich, nickel- and copper-poor manganese nodules covers the deep sea-floor of the northeastern quadrant of the Southwestern Pacific Basin, and the... -
Chemical composition of deep sea manganese deposits determined at Kennecott C...
During the 1967-1968 period chemical analysis of both major and trace elements was performed on manganese nodules, crusts and micronodules on a large number of cores taken by...
