Results 51 to 60 of about 2,801 (218)
Geochemistry, Geophysics, Geosystems, 2023 Ferromanganese nodules are cm‐sized, authigenic, abyssal manganese‐iron‐hydroxide concretions. They grow very slowly at rates of a few mm per million years.
Hirokuni Oda +4 more
doaj +1 more source
Diversity, 2022 Ferromanganese (Fe-Mn) sedimentary layers and nodules occur at different depths within sediments at deep basins and ridges of Lake Baikal. We studied Fe-Mn nodules and host sediments recovered at the slope of Bolshoy Ushkany Island.
Tamara Zemskaya +9 more
doaj +1 more source
Origin and age of submarine ferromanganese hardgrounds from the Marion Plateau, offshore northeast Australia [PDF]
, 2007 Be and Nd isotope compositions and metal concentrations (Mn, Fe, Co, Ni, and Cu) of surface and subsurface ferromanganese hardground crusts from Ocean Drilling Program Leg 194 Marion Plateau Sites 1194 and 1196 provide new insights into the crusts ...
Anselmetti, Flavio S. +3 more
core +1 more source
A Hf‐Nd isotopic correlation in ferromanganese nodules
Geophysical Research Letters, 1998 The 176Hf/177Hf ratio was measured on 34 ferromanganese nodules, mostly from the Atlantic ocean. The different ocean basins are isotopically distinct with the extreme compositions being less radiogenic in the Atlantic (єHf ∼ +1) than in the Pacific (єHf ∼ +9).
Francis Albarède +4 more
openaire +3 more sources
Московский журнал международного права, 2009 The article addresses one of the key documents regarding the activity of the states on prospecting, exploration and exploitation of the mineral resources of the International seabed area – the Regulations on prospecting, exploration and exploitation of ...
A. N. Nosikov
doaj +1 more source
Discovery of ferromanganese hydrocarbon-related nodules associated with the Meknes mud volcano (Western Moroccan margin) [PDF]
, 2012 A suite of ferromanganese nodules were sampled during the MVSEIS-2008 cruise aboard of the R/V Hespérides in the flanks of Meknes mud volcano (Moroccan margin, NE Central Atlantic).
Ortiz Menéndez, José Eugenio +1 more
core
Environmental Microbiology, Volume 27, Issue 12, December 2025.A neutrophilic Fe(II)‐oxidizing Gallionellaceae was isolated from circumneutral Cu mine drainage. It mediated Fe(III) biomineralization, resulting in pronounced Cu accumulation (up to 2 wt%) within the solid precipitates. ABSTRACT Geomicrobiology of copper (Cu) and iron (Fe) in circumneutral‐pH drainage from a Japanese Cu mine was investigated, with a ...
Kazuya Tanimoto +5 more
wiley +1 more source
Cryptomelane formation from nanocrystalline vernadite precursor: a high energy X-ray scattering and transmission electron microscopy perspective on reaction mechanisms [PDF]
, 2015 International audienceBackground:Vernadite is a nanocrystalline and turbostratic phyllomanganate which is ubiquitous in the environ‑ment. Its layers are built of (MnO6)8− octahedra connected through their edges and frequently contain vacancies and(or ...
Fernandez-Martinez, Alejandro +6 more
core +3 more sources
International Journal of Advanced Studies, 2022 In the analysis of the components of gas emissions from metallurgical industries, it is generally accepted that sulphur dioxide is the most harmful to the surrounding ecosystem, and its capture is a pressing problem.
Grigoriy I. Sverdlik +2 more
doaj +1 more source
European Journal of Inorganic Chemistry, Volume 28, Issue 30, October 22, 2025.As the reduction of transition metal oxides by coal poses a significant climate risk, the use of alternative reducing agents such as hydrogen is becoming increasingly important. This review summarizes the current knowledge of the reduction pathways of transition metal oxides from groups 6 to 8.
Michael Häger +2 more
wiley +1 more source