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Sub-Seafloor Replacement Mineralization: Lessons From The Neves Corvo VHMS Deposit
By Jorge MRS Relvas
Recent research both on active and fossil systems has demonstrated that shallow subseafloor replacement processes are not only viable depositional mechanisms for massive sulfide mineralization, but li
Sep 14, 2011
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Epithermal Ore Formation At The Neovolcanic Komba Ridge In The Eastern Flores Sea, Indonesia
By Peter Halbach
Within the frame of the German-Indonesian cooperative Bandamin research project two short cruises (7 station days each) were carried out which led to the Flores-Banda basin located north of the active
Jan 1, 2004
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Concentration of Pt, Au and Ag in Ferromanganese Deposits from the N-W Pacific: Preliminary Results
By V. V. Ivanov, A. I. Khanchuk, E. V. Mikhailik, M. G. Blokhin, P. E. Mikhailik
At present, marine ferromanganese crusts of seamounts are of great interest as a source of high-tech metals. The metals most enriched in these deposits are essential for a wide variety of green-tech,
Jan 1, 2018
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Shallow-Marine Gold Mineralization In The Lihir Island Area, Papua New Guinea
By Peter M. Herzig
In 1994 and 1998 the German research vessel R/V Sonne undertook detailed mapping and sampling of the largely uncharted offshore areas of the Tabar-Lihir-Tanga-Feni island chain in the New Ireland Basi
Jan 1, 1998
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Inferred Genesis Of Each Textural Zone In Ferromanganese Nodules From Campbell Drift SW Pacific ? Introduction
By Se-Won Chang
This is a part of the joint KIGAM-GNS-NIWA 3-year study of ferromanganese nodules on the Campbell Drift, east of Campbell Plateau to determine age distribution, growth rates and geochemical evolution
Jan 1, 2003
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Hydrothermal Mineralization At Slow-Spreading Centers: The Atlantic Model
By Peter A. Rona
The recent discovery of the first black smoker-type hydrothermal venting and massive sulfide mineral deposits at a site in the rift valley of the slow-spreading Mid-Atlantic Ridge near latitude 26°N,
Jan 1, 1986
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Sulfur Isotope Ratio Measurements As An Exploration Tool For High-Tenor Seafloor Massive Sulfide Deposits
By Raymond A. Binns
Exploration for high-value massive sulfide deposits on the ocean floor typically commences with a search for chimney fields in appropriate geological settings, followed by collection and assaying of s
Jan 1, 2011
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Role Of Magmatic Fluids In The Formation Of Seafloor Hydrothermal Deposits
By Steven D. Scott
The source of ore metals for base and precious metal volcanogenic massive sulfide (vms) deposits has been debated for decades. Metals can be obtained from high-temperature sea water-rock reactions in
Jan 1, 2005
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Design and Analysis of a Deepwater Seabed Mining Vertical Transport System
By Richard Harrison, Frank Lim
"Lifting of slurry from the seabed mining machine to the surface production vessel is a critical element of any deepwater seabed mining system. A Vertical Transport System (VTS) comprises pump(s), ris
Jan 1, 2017
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Mineralogical and Geochemical Characterization of Deep-Sea Metalliferous Sediments of the TAG Area
By Jelena Milinovic, Sofia Martins, Anna Lichtschlag, Sven Petersen, Fernando J. A. S. Barriga, Bramley Murton, Adeline Dutrieux
"The active TAG hydrothermal mound is one of the largest and better studied. Due to its size (one of the largest, known so far, in the Atlantic Ocean) and concentration of specific economic valuable e
Jan 1, 2017
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A Self-Regulatory Model For The Management Of The Environment And Public Issues In Marine Mining
By Julian Malnic
The emerging marine minerals exploration and mining industry is currently focused mainly on the technical elements for its success such as developing exploration and mining technologies. However, in o
Jan 1, 2000
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Trench Cutter Technique Applied For Off-Shore Sampling
By Stephan K. Schwank
In mid 1993, Bauer Spezialtiefbau GmbH, based in Germany got the order to develop a sampling tool capable of penetrating all different types of seabed sediments including cobbles and boulders and into
Jan 1, 1998
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Initial Assessment of Mineralogical Properties of Seafloor Massive Sulphide Deposit at the Arctic Mid- Ocean Ridge
By Kristian Drivenes, Steinar L. Ellefmo, Kurt Aasly, Ben Snook, Przemyslaw B. Kowalczuk, Rolf Arne Kleiv
"Since Ellefmo et al. (2014) published resource estimates of undiscovered seafloor massive sulfides (SMS) on the Arctic Mid-Ocean Ridge (AMOR), there has been an increased focus on establishing new kn
Jan 1, 2017
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Contribution Of Seafloor Research To Land-Based VMS Exploration
By Gérald Riverin
Over the past century, exploration methods for volcanogenic massive sulphide deposits have evolved in response to a decreasing number of discoveries made by traditional surface prospecting and by grou
Jan 1, 1998
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Kennecott?s Cuprion Process For Manganese Nodules
By Gale L. Hubred
Kennecott?s Ledgemont Laboratory developed the Cuprion Process to recover metal values from manganese nodules in the early 1970s. A reducing leach of monovalent cuprous ion attacks the manganese oxid
Jan 1, 2005
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Geoacoustic and Photo-Profiling as Remote Techniques of Choice in Nodule Field Exploration
By Ivo Dreiseitl
Bottom sediment sampling by means of a box corer, as a direct method of deep seabed exploration for polymetallic nodules, is the most comprehensive way to obtain various types of geological informatio
Sep 14, 2011
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Extinct Seafloor Massive Sulphide Mounds from the TAG Hydrothermal Area, Mid-Atlantic Ridge - Insights into Geological Processes after Cease of Hydrothermal Venting
By Sven Petersen, Berit Lehrmann, Bramley J. Murton, Paul A. J. Lusty
"INTRODUCTIONToday’s metal mining focusses on land based ore deposits which only consider one third of the Earth’s surface. Through an increasing global demand of strategic metals used in the electron
Jan 1, 2017
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The GIS Model of the Fe-Mn Crust Origin on the Seamounts from the Pacific Ocean Magellan Seamounts
By H. I. Chesalova, M. Ye. Melnikov, A. M. Asavin
The discovery of iron-manganese ores on the surface of underwater mountains was made more than a half century ago. During this time the basic ideas about the thermodynamics of the processes of hydroch
Sep 24, 2006
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Marine Protected Areas within the Clarion-Clipperton Zone
By Charles L. Morgan
"In 2012 the International Seabed Authority (ISA) established nine “Areas of Particular Environmental Interest” (APEIs) for consideration as future Marine Protected Areas to help preserve the biodiver
Jan 1, 2017
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Melt Inclusions in Brothers Dacite Reveal Metal Transporting Mechanisms
By Ian J. Graham
Brothers volcano, in the southern Kermadec Arc, is host to two hydrothermal vent fields with very different geology, permeability, vent fluid compositions and mineralogy (see de Ronde et al. and Ditch
Jan 1, 2010