Platinum Group Metals and Gold in Supergene Nickel …
weathering crusts with very large nickel deposits. At the same time, clayey–silty and chromite-bearing sediments were accumulated in coastal-marine banks. Platinum group minerals could be accumulated together with the clastic chromite in the alluvial lateritic and silty–clayey shelf formations (particularly, in the Nipe Bay).
Read MorePlatinum group elements and gold in ferromanganese …
Platinum group elements and gold in ferromanganese crusts from Afanasiy-Nikitin seamount, equatorial Indian Ocean: Sources and fractionation By V. K. Banakar, J. R. Hein, R. P. Rajani and A. R. Chodankar
Read MorePetrogenesis of the Platinum-Group Minerals | Reviews in ...
The platinum-group minerals (PGM) are a diverse group of minerals that concentrate the platinum-group elements (PGE; Os, Ir, Ru, Rh, Pt, and Pd). At the time of writing, the International Mineralogical Association database includes 135 named discrete PGM phases. ... The latter studies indicate that processes operating on the crusts and mantles ...
Read MoreIncorporation of Transition and Platinum Group …
Incorporation of Transition and Platinum Group Elements (PGE) in Co-rich Mn Crusts at Afanasiy-Nikitin Seamount (AFS) in the Equatorial S Indian Ocean Geoffrey P. Glasby National Institute of Oceanography, Dona Paula, Goa, India Abstract Of the 12 elements enriched in Co-rich Mn crusts from the Afanasiy-Nikitin Seamount in the Equatorial S
Read MorePlatinum Group Element Geochemistry in Ferromanganese ...
Abstract—Hydrogenetic Fe–Mn crusts in the ocean are enriched in platinum but do not accumulate palladium.The mechanism of platinum input into the crusts remains debatable. There is even less data on ruthenium and iridium. In this article, the distribution of platinum group elements (Pd, Ru, Ir, Pt) in ferromanganese crusts of the Detroit guyot (Northwest Pacific) is …
Read MorePlatinum group elements and gold in ferromanganese …
Platinum group elements and gold in ferromanganese crusts from Afanasiy–Nikitin seamount, equatorial Indian Ocean: Sources and fractionation V K Banakar1,∗, JRHein2, R P Rajani1 and A R Chodankar1 1National Institute of Oceanography, Dona Paula, Goa 403 004, India. 2U.S. Geological Survey, MS999, Menlo Park, California, USA. ∗e-mail: [email protected]
Read MorePlatinum Group Elements in Ferromanganese Crusts of the ...
Abstract The behavior of platinum group elements (PGE = Pt, Pd, Ru, Ir) in separate layers of ferromanganese crusts of the Atlantic Ocean is considered. The studied crusts, in addition to the hydrogenous source of the matter (crusts from the Bathymetrists Seamounts), formed under the variable influence of hydrothermal (MAR, station 2176) and halmyrolytic …
Read MoreMeteorite Compositions - PERMANENT
Cobalt averages about 0.5%, and other metals such as the platinum group metals, gallium, and germanium are dissolved in the Fe-Ni metal. (Fe is the chemical symbol for iron.) While most "irons" are pure or nearly pure metal, the technical definition of an "iron" includes metal meteorites with up to 30% mineral inclusions such as sulfides, metal ...
Read MoreCobalt- and platinum-rich ferromanganese crusts and ...
Platinum group elements analyzed in Denver laboratory, R. Mendes, A. Love, and C. Gent provided analytical expertise, minor elements by induction-coupled plasma, P.H. Briggs, analyst, except for D3-1, D15-5, and D18-1, minor elements by X-ray spectroscopy End INAA. 268 TABLE 4 Mineral content (in %) of selected ferromanganese crusts, Marshall ...
Read MorePlatinum group elements and gold in ferromanganese …
Platinum group elements and gold in ferromanganese crusts from Afanasiy-Nikitin seamount, equatorial Indian Ocean: Sources and fractionation
Read MoreEnrichments of platinum-group elements in hydrogenous ...
Twenty-seven marine Mn and Fe deposits chosen for their diverse origins have been analyzed for five platinum-group elements (PGE). The PGE display their highest concentrations in hydrogenous Mn crusts and nodules, lesser concentrations in diagenetic nodules and two to three orders of magnitude lower concentrations in hydrothermal Mn and Fe crusts.
Read MorePlatinum-Group Elements in Cosmochemistry | Elements ...
In a cooling solar nebula, five of the six platinum-group elements (PGE) condense as refractory-metal alloys at temperatures above the condensation of Fe-Ni metal. Non-refractory Pd condenses in solid solution with Fe-Ni. Such refractory alloys are preserved in some meteorites, although they are often highly altered.
Read MoreCrustal magmatic controls on the formation of porphyry ...
Thick crusts (>40 km) increase ... several studies on the platinum group element geochemistry of igneous rocks associated with giant porphyry Cu ± Au deposits 17,18,78,98,116 have shown a link ...
Read MorePlatinum-group element abundances and Re–Os isotopic ...
The concentrations of platinum-group elements (PGEs, including Os, Ir, Ru, Pt and Pd) and the geochemically related Re, as well as 187 Re/ 188 Os and 187 Os/ 188 Os ratios, are reported here for globally-distributed glacial diamictites that were deposited during the Mesoarchean, Paleoproterozoic, Neoproterozoic and Paleozoic eras. The medians ...
Read MorePlatinum enrichment and phase associations in marine ...
Platinum group elements and gold in ferromanganese crusts from Afanasiy-Nikitin seamount, equatorial Indian Ocean: sources and fractionation J. Earth Syst. Sci., 116 ( 2007 ), pp. 3 - 13, 10.1007/s12040-007-0002-x
Read MorePlatinum group elements and gold in ferromanganese …
The platinum group elements (PGE: Ir, Ru, Rh, Pt, and Pd) and Au in ANS Fe-Mn crusts are derived from seawater and are mainly of terrestrial origin, with a minor cosmogenic component. The Ru/Rh (0.5-2) and Pt/Ru ratios (7-28) are closely comparable to ratios in continental basalts, whereas Pd/Ir ratios exhibit values ( 2) similar to CI ...
Read MoreGeochemical characteristics of platinum-group elements …
Platinum-group ele-ments (PGEs), particularly Pt, are also relatively enriched in nod-ules and crusts, and are receiving increasing research attention (Astakhova, 2017; Cabral et al., 2009; Halbach et al., 1989). Sources and enrichment mechanisms of PGEs in polymetal-lic nodules and Co-rich crusts are still debated. Halbach et al.
Read MoreDetermination of Platinum-Group Elements and Gold in ...
The platinum group elements (PGE: Ir, Ru, Rh, Pt, and Pd) and Au in ANS Fe-Mn crusts are derived from seawater and are mainly of terrestrial origin, with a minor cosmogenic component.
Read MoreThe enrichment of Platinum Group Elements (PGE) in Co …
The enrichment of Platinum Group Elements (PGE) in Co-rich crusts from the central and western Pacific
Read MoreIncorporation of Transition and Platinum Group Elements ...
Incorporation of Transition and Platinum Group Elements (PGE) in Co-rich Mn Crusts at Afanasiy-Nikitin Seamount (AFS) in the Equatorial S Indian Ocean Geoffrey P. Glasby, National Institute of Oceanography, Dona Paula, Goa, India
Read MorePlatinum group elements and gold in ferromanganese …
The platinum group elements (PGE: Ir, Ru, Rh, Pt, and Pd) and Au in ANS Fe-Mn crusts are derived from seawater and are mainly of terrestrial origin, with a minor cosmogenic component. The Ru/Rh (0.5–2) and Pt/Ru ratios (7–28) are closely comparable to ratios in continental basalts, whereas Pd/Ir ratios exhibit values (<2) similar to CI ...
Read MoreFerromanganese Crusts - Mindesea
Ferromanganese crusts occur at shallower depths of <400 to about > 5000 meters in areas of significant volcanic activity. The crusts grow on hard-rock substrates of volcanic origin by the precipitation of metals dissolved in seawater in areas of seamounts, ridges, plateaus and where prevailing currents prevent deposition of unconsolidated sediments and occupy large areas on …
Read More(PDF) Geochemical characteristics of platinum-group ...
PDF | Polymetallic nodules and cobalt (Co)-rich crusts are enriched in platinum-group elements (PGEs), especially platinum (Pt) and may be important... | Find, read and cite all the research you ...
Read MoreGeochemical characteristics of platinum-group elements in ...
Polymetallic nodules and cobalt (Co)-rich crusts are enriched in platinum-group elements (PGEs), especially platinum (Pt) and may be important sinks of PGEs. At present, little information is available on PGEs in polymetallic nodules, and their geochemical characteristics and the causes of PGEs enrichment are unclear. Here, PGEs of polymetallic nodules from …
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