Ferromanganese (Fe-Mn) crusts and nodules are marine sedimentary mineral deposits, composed mostly of iron and manganese oxides. They precipitate very slowly from seawater, or for nodules also from deep-sea sediment pore waters, recording the chemical signature of these source waters as they grow. Additional elements incorporate via …Web
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Abstract—The behavior of platinum group elements (PGE = Pt, Pd, Ru, Ir) in separate layers of ferroman- ganese crusts of the Atlantic Ocean is considered. The studied …Web
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Keywords: Fe–Mn crusts, Pacific Ocean, platinum group elements, cobalt, cerium DOI: 10.1134/S00033 INTRODUCTION Oceanic ferromanganese crusts have attracted theWeb
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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 ...Web
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Platinum group and nonferrous metals in ferromanganese crusts from submarine volcanoes of the Sea of Japan: (a, b) Galagan Rise; (c) Belyavsky Volcano; (d, e) Matsu Seamount; (f) Medvedev Volcano.Web
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The studied ferromanganese crusts are confined to different structures and were formed by different settings. The Amlia and Rat Fracture Zones are located on the northern termination of the Pacific Plate, parallel to each other, and extend from the south northward at almost 90° to the trench ().The Stalemate (FZ), unlike fracture zones of the …Web
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Semantic Scholar extracted view of "Platinum enrichment and phase associations in marine ferromanganese crusts and nodules based on a multi-method approach" by A. Koschinsky et al. ... Abstract The behavior of platinum group elements (PGE = Pt, Pd, Ru, Ir) in separate layers of ferromanganese crusts of the Atlantic Ocean …Web
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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 …Web
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Description. Platinum (element #78, symbol Pt) is a dense, silvery-gray metal. The platinum group of elements consists of metals with similar physical properties to platinum and these elements are among the rarest in the Earth's crust. They have high melting points, are dense or heavy and are non-reactive with other elements.Web
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Distribution of platinum group elements (Ru, Pd, Pt, and Ir) and gold in hydrogenous ferromanganese deposits from the southern part of the Atlantic Ocean has been studied. The presented samples were the surface and buried Fe–Mn hydrogenous nodules, biomorphous nodules containing predatory fish teeth in their nuclei, and crusts. …Web
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The major element relationships in ferromanganese (Fe-Mn) crusts from Afanasiy-Nikitin seamount (ANS), eastern equatorial Indian Ocean, appear to be atypical. High positive correlations (r = 0.99) between Mn/Co and Fe/Co ratios, and lack of correlation of those ratios with Co, Ce, and Ce/Co, indicate that the ANS Fe-Mn crusts are distinct …Web
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Abstract. Polymetallic nodules and cobalt (Co)-rich crusts are enriched in platinum-group elements (PGEs), especially platinum (Pt) and may be important sinks …Web
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PDF | On Apr 12, 2021, E. D. Berezhnaya and others published Platinum Group Element Geochemistry in Ferromanganese Crust of the Detroit Guyot, Pacific Ocean | Find, read and cite all the research ...Web
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Moreover, they show comparable contents of major metallogenic elements (e.g., Mn, Cu, Co, and Ni) and platinum group elements when compared to exposed Fe-Mn crusts. However, they have much higher contents of rare earth elements (REEs) than those of exposed Fe-Mn crusts, indicating a comparable resource potential.Web
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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 …Web
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The Layer-by-layer analysis of the Fe–Mn nodules and crusts shows that the platinum group elements (PGE) are accumulated in the ferromanganese oxyhydroxide layers relative to the clayey nuclei ...Web
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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...Web
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PGE are among the rarest metals on earth; the upper crust of the Earth contains about 0.0005 parts per million (ppm) platinum. Today, the average grade of PGE in ores …Web
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Atlantic crusts in our study do not originate from below or near the CCD and their Fe concentrations are not greater than those of many crusts without goethite, so that explanations (1) and (4) may be most likely for the occurrence of goethite in the Atlantic samples. ... Platinum-Group Elements Fe-Mn crusts are highly enriched in PGEs (Ir, Ru ...Web
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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 …Web
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Ferromanganese crusts occur as thick coatings that form on exposed rock surfaces of seamounts, ridges, and plateaus throughout ocean basins, which allows them to occur at a much broader range of ...Web
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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 …Web
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Abstract— 2720 cosmic spherules extracted from ferromanganese crusts sampled at two guyots of the Magellan Seamounts were studied using a scanning electron microscope. In comparison with collections of modern cosmic spherules, our samples are significantly richer in I-type spherules (consisting of Fe oxides, often with a Fe–Ni metal …Web
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The Layer-by-layer analysis of the Fe–Mn nodules and crusts shows that the platinum group elements (PGE) are accumulated in the ferromanganese oxyhydroxide layers relative to the clayey nuclei ...Web
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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.Web
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The Layer-by-layer analysis of the Fe–Mn nodules and crusts shows that the platinum group elements (PGE) are accumulated in the ferromanganese oxyhydroxide layers relative to the clayey nuclei ...Web
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In order to elucidate possible processes leading to platinum accumulation in ferromanganese deposits, we analyzed published data on the interaction of dissolved platinum species in different valence states with iron and manganese oxyhydroxides under oceanic conditions and experimentally studied the kinetics of sorption of inorganic and …Web
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Glasby, G. P., Incorporation of transition and platinum group elements (PGE) in Co-rich Mn crusts at Afanasiy–Nikitin seamount (AFS) in the equatorial S Indian Ocean. Resour. Geol., 2010, 60, 212–215.Web
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Selective chemical extraction method was utilized to fractionally extract platinum group elements (PGE) in cobalt-rich crusts from Caiwei Seamount in the Pacific, and PGE contents were determined by inductively coupled plasma mass spectrometry (ICP-MS). ... Occurrence phase analysis results in cobalt-rich crusts show that the PGE enrichments …Web
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Platinum group elements (PGE) have been relatively little studied in ferromanganese crusts. Only a few publications devoted to oceanic ferromanganese …Web
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INTRODUCTION. Highly siderophile elements (HSEs), including Re and Os, are hosted dominantly by non-silicate sulfide minerals and metallic alloys. They provide a …Web
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The obtained platinum fluxes to ferromanganese crusts and to nodules are close and vary from 35 to 65 ng∙cm−2∙Ma−1. Palladium and gold do not accumulate in hydrogenous ferromanganese ...Web
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The resources of platinum group metals (PGM) including Pt are unevenly distributed on earth, and more than 90% of the world PGM reserve exists in South Africa (USGS 2021). Pt in ferromanganese crusts is much more widely distributed, and therefore it attracts considerable attention. The Pt concentration has been reported in the range of …Web
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Crusts contain cobalt, manganese, and platinum, three of the four priority strategic metals for the United States, and unlike abyssal nodules, whose recovery is complicated by their dominant location in international waters, some of the most cobalt-rich crusts occur within the exclusive economic zone of the United states and other nations. ExpandWeb
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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 … Expand. 7. Save. Impacts of hydrothermal plume processes on oceanic metal cycles and transport.Web
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The platinum group of elements comprises six elements: Ru, Rh, Pd, Os, Ir, and Pt. They differ from one another in oxidation states in natural processes and the ability of forming complex ...Web
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Abstract—The behavior of platinum group elements (PGE = Pt, Pd, Ru, Ir) in separate layers of ferroman-ganese 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 hydrother-Web
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