Mineralogical transformations in polymetallic nodules and the change of Ni, Cu and Co crystal-chemistry upon burial in sediments
Sign Up to like & getrecommendations! Published in 2020 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2020.04.012
Abstract: Abstract Polymetallic nodules from the Clarion and Clipperton Zone of the equatorial Pacific Ocean were studied using X-ray diffraction, X-ray absorption, Fourier-transformed infrared spectroscopy and transmission electron microscopy. This study includes nodules found at the… read more here.
Keywords: sediment depth; chemistry; sediment; polymetallic nodules ... See more keywords
Organomineralization in the deep seabed polymetallic nodules: a matter of cell surface
Sign Up to like & getrecommendations! Published in 2025 at "Geomicrobiology Journal"
DOI: 10.1080/01490451.2025.2519782
Abstract: Abstract Deep seabed ferromanganese precipitates, better known as polymetallic nodules and cobalt crusts, are ore deposits of geobiological interest because of their enrichment in transition metals such as Ni, Cu, Co, Mo, Li, and rare… read more here.
Keywords: matter cell; organomineralization deep; seabed polymetallic; nodules matter ... See more keywords
Low-waste, single-step, sustainable extraction of critical metals from deep-sea polymetallic nodules
Sign Up to like & getrecommendations! Published in 2025 at "Science Advances"
DOI: 10.1126/sciadv.aea1223
Abstract: To support the green energy transition, sustainable supplies of critical metals—60 million (metric) tons of copper, 10 million tons of nickel, and 1 million tons of cobalt—annually by 2050 are essential. These metals are currently… read more here.
Keywords: deep sea; critical metals; sea polymetallic; extraction ... See more keywords
Bryozoa (Cheilostomata) from polymetallic nodules in the Russian exploration area, Clarion-Clipperton Fracture Zone, eastern Pacific Ocean-taxon novelty and characteristics as macro- and megafaunal elements.
Sign Up to like & getrecommendations! Published in 2024 at "Zootaxa"
DOI: 10.11646/zootaxa.5440.1.1
Abstract: This work describes Bryozoa of the order Cheilostomata associated with polymetallic nodules collected by box-coring in the eastern part of the Russian exploration area of the Clarion-Clipperton Fracture Zone (CCFZ or CCZ) under contract to… read more here.
Keywords: exploration area; area; clarion clipperton; area clarion ... See more keywords
Reducing CO2 Emissions through the Strategic Optimization of a Bulk Carrier Fleet for Loading and Transporting Polymetallic Nodules from the Clarion-Clipperton Zone
Sign Up to like & getrecommendations! Published in 2024 at "Energies"
DOI: 10.3390/en17143383
Abstract: As global maritime cargo transportation intensifies, managing CO2 emissions from ships becomes increasingly crucial. This article explores optimizing bulk carrier fleets for transporting polymetallic nodules (PMNs) from the Clarion-Clipperton Zone (CCZ) to reduce CO2 emissions.… read more here.
Keywords: transporting polymetallic; bulk carrier; bulk; clarion clipperton ... See more keywords
Accurate Identification Method of Small-Size Polymetallic Nodules Based on Seafloor Hyperspectral Data
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Marine Science and Engineering"
DOI: 10.3390/jmse12020333
Abstract: Polymetallic nodules are spherical or ellipsoidal mineral aggregates formed naturally in deep-sea environments. They contain a variety of metallic elements and are important solid mineral resources on the seabed. How best to quickly and accurately… read more here.
Keywords: hyperspectral data; deep sea; method small; accurate identification ... See more keywords
Air-Lift Pumping System for Hybrid Mining of Rare-Earth Elements-Rich Mud and Polymetallic Nodules around Minamitorishima Island
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Marine Science and Engineering"
DOI: 10.3390/jmse12091470
Abstract: REE-rich mud under the seabed at a 5500–5700 m water depth around Minamitorishima island and polymetallic nodules buried in the deep seabed are very promising and attractive to explore and develop. REEs are critical to… read more here.
Keywords: mud polymetallic; system; around minamitorishima; minamitorishima island ... See more keywords
Comminution of Polymetallic Nodules with a High-Pressure Water Jet
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15228228
Abstract: This paper presents an original method for the comminution of polymetallic nodules in a hydro-jet mill of our own design, having the water jet pressure in the range of 70–200 MPa. The best comminution results… read more here.
Keywords: polymetallic nodules; comminution polymetallic; water jet; jet ... See more keywords
The Recovery of Valuable Metals from Ocean Polymetallic Nodules Using Solid-State Metalized Reduction Technology
Sign Up to like & getrecommendations! Published in 2019 at "Minerals"
DOI: 10.3390/min10010020
Abstract: Ocean polymetallic nodules are oxide ores rich in Ni, Co, Cu, and Mn, which are valuable metals found in deep-sea mineral resources. Such non-ferrous metals do not exist in isolation, and producing concentrates using conventional… read more here.
Keywords: state; recovery; valuable metals; metals ocean ... See more keywords
Aspects of Estimation and Reporting of Mineral Resources of Seabed Polymetallic Nodules: A Contemporaneous Case Study
Sign Up to like & getrecommendations! Published in 2021 at "Minerals"
DOI: 10.3390/min11020200
Abstract: Exploration of seabed polymetallic nodules identifies the Clarion Clipperton Zone and the Indian Ocean Nodule Field to be of economic interest. Mineral resource estimation is important to the owner of the resource (all of mankind;… read more here.
Keywords: polymetallic nodules; reporting mineral; resource; seabed polymetallic ... See more keywords
Thermal Pre-Treatment of Polymetallic Nodules to Create Metal (Ni, Cu, Co)-Rich Individual Particles for Further Processing
Sign Up to like & getrecommendations! Published in 2018 at "Minerals"
DOI: 10.3390/min8110523
Abstract: Polymetallic nodules are a potential source of industrially demanded metals such as Ni, Co, Cu, and Mo (up to 3 wt %). Even if there is no deep-sea mining of manganese nodules today, a forecasted… read more here.
Keywords: metal; polymetallic nodules; treatment polymetallic; metal rich ... See more keywords