Journal ArticleDOI
Deep-ocean mineral deposits as a source of critical metals for high- and green-technology applications: Comparison with land-based resources
TLDR
In this paper, the authors compare the grades and tonnages of nodules and crusts in those two areas with the global terrestrial reserves and resources, and compare the two largest existing land-based REE mines, Bayan Obo in China and Mountain Pass in the USA.About:
This article is published in Ore Geology Reviews.The article was published on 2013-06-01. It has received 608 citations till now.read more
Citations
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Journal ArticleDOI
Optimization, isotherm, and kinetic studies of diclofenac removal from aqueous solutions by Fe–Mn binary oxide adsorbents
Benny Marie B. Ensano,Mark Daniel G. de Luna,Kim Katrina P. Rivera,Sheila Mae B. Pingul-Ong,Dennis C. Ong +4 more
TL;DR: Investigation of the removal of diclofenac from aqueous solution using Fe–Mn binary oxide (FMBO) adsorbents indicated that adsorption occurred on heterogeneous adsorbent surface, indicating that Chemisorption was the rate-limiting step of the DCF removal.
Journal ArticleDOI
Trace element geochemistry of sulfides from the Ashadze-2 hydrothermal field (12° 58' N, Mid-Atlantic Ridge): Influence of host rocks, formation conditions or seawater?
Irina Yu. Melekestseva,Maslennikov,G Tret'yakov,S. P. Maslennikova,Leonid V. Danyushevsky,Kotlyarov,L Large,Beltenev,P Khvorov +8 more
TL;DR: The trace element composition of isocubanite, chalcopyrite, pyrite and covellite from oxidized Cu-rich massive sulfides of the Ashadze-2 hydrothermal field (12° 58′ N, Mid-Atlantic Ridge) was studied using LA-ICP-MS as discussed by the authors.
Journal ArticleDOI
Potential mineral resources of the Chilean offshore: an overview
TL;DR: The most significant non-energetic mineral resources off Chile correspond to Fe-Mn nodules and crusts, phosphorite deposits, gold and titanium placer deposits and massive sulfide deposits as discussed by the authors.
Journal ArticleDOI
A magnetic approach to unravelling the paleoenvironmental significance of nanometer-sized Fe hydroxide in NW Pacific ferromanganese deposits
Xiaodong Jiang,Xiang Zhao,Xiangyu Zhao,Yu-Min Chou,James R. Hein,Xiaoming Sun,Yi Zhong,Jiang-Bo Ren,Qingsong Liu +8 more
TL;DR: In this paper, the x-ray amorphous Fe hydroxides (AFH) component in Fe-Mn deposits was quantified using a thermally treated hydrogenetic Fe-mn deposits from the northwestern Pacific Ocean.
Journal ArticleDOI
Origin and variability of resource-grade marine ferromanganese nodules and crusts in the Pacific Ocean: A review of biogeochemical and physical controls
TL;DR: A review of the biogeochemical, chemical and physical mechanisms contributing to the formation, distribution, abundance and variability of marine ferromanganese nodules and crusts is presented in this article .
References
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Journal ArticleDOI
Submarine Thermal Springs on the Galápagos Rift
John B. Corliss,Jack Dymond,Louis I. Gordon,John M. Edmond,Richard P. Von Herzen,Robert D. Ballard,Kenneth Green,David L. Williams,Arnold E. Bainbridge,Kathy Crane,Tjeerd H. van Andel +10 more
TL;DR: It is suggested that two-thirds of the heat lost from new oceanic lithosphere at the Gal�pagos Rift in the first million years may be vented from thermal springs, predominantly along the axial ridge within the rift valley.
OtherDOI
Rare earth elements: critical resources for high technology
Abstract: The rare earth elements (REE) form the largest chemically coherent group in the periodic table. Though generally unfamiliar, the REE are essential for many hundreds of applications. The versatility and specificity of the REE has given them a level of technological, environmental, and economic importance considerably greater than might be expected from their relative obscurity. The United States once was largely self-sufficient in these critical materials, but over the past decade has become dependent upon imports (fig. 1). In 1999 and 2000, more than 90% of REE required by U.S. industry came from deposits in China. Although the 15 naturally occurring REE (table 1; fig. 2) are generally similar in their geochemical properties, their individual abundances in the Earth are by no means equal. In the continental crust and its REE ore deposits, concentrations of the most and least abundant REE typically differ by two to five orders of magnitude (fig. 3). As technological applications of REE have multiplied over the past several decades, demand for several of the less abundant (and formerly quite obscure) REE has increased dramatically. The diverse nuclear, metallurgical, chemical, catalytic, electrical, magnetic, and optical properties of the REE have led to an ever increasing variety of applications. These uses range from mundane (lighter flints, glass polishing) to high-tech (phosphors, lasers, magnets, batteries, magnetic refrigeration) to futuristic (hightemperature superconductivity, safe storage and transport of hydrogen for a post-hydrocarbon economy).
Book ChapterDOI
Sea-Floor Tectonics and Submarine Hydrothermal Systems
TL;DR: In this article, the authors identify a number of sites of high-temperature venting and polymetallic sulfide deposits on the seafloor of the world's oceans.
Journal ArticleDOI
Uptake of elements from seawater by ferromanganese crusts: solid-phase associations and seawater speciation
Andrea Koschinsky,James R. Hein +1 more
TL;DR: In this paper, the authors proposed a simple sorption model related to the inorganic speciation of the elements in seawater, as has been proposed in earlier models, in order to determine the host phases of 40 elements.
Journal ArticleDOI
Sequential leaching of marine ferromanganese precipitates: Genetic implications
Andrea Koschinsky,Peter Halbach +1 more
TL;DR: In this paper, the results of leaching experiments were carried out on twentyone hydrogenetic crust samples from different locations in the central Pacific and the results were compared with four crust and nodule samples of different genetic origin.
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Uptake of elements from seawater by ferromanganese crusts: solid-phase associations and seawater speciation
Andrea Koschinsky,James R. Hein +1 more