Ultramafic Complexes and Related Deposits
A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Deposits".
Deadline for manuscript submissions: closed (31 August 2018) | Viewed by 3681
Special Issue Editor
Special Issue Information
Dear Colleagues,
Ultramafic and related rocks are important as potential sites for ore deposits of two essential base metals, chromium and nickel. They may also contain significant resources of copper and cobalt. These metals are, not only essential for the production of stainless steel, heat-resisting steels and super-alloys, they may also play an increasing role in new technologies, e.g., for the production and stocking of renewable energies. Chromite ores occur either as stratiform chromitites within layered intrusions or as podiform chromitites in the upper mantle section of ophiolitic complexes. The former have always been and are still actively studied for their importance as a PGE resource, but there is a renewed interest in the latter for their role as markers of mantle geodynamics. Nickel studies have also been undergoing recent evolutions, as the share of sulfide ores from Precambrian mafic intrusions, which has long been a major source, tends to decrease in favor of the garnierite and oxide ores formed by supergene alteration of ophiolitic peridotites. This change goes with an evolution in ore processing methods from pyrometallurgy to hydrometallurgy. In addition to metallic resources, ongoing researches suggest the ultramafic rocks could be of economic interest with regard to energy issues, as a sequestration sink for greenhouse gases, or as the site of hydrogen emanations. Overall, there are certainly many recent contributions that bring new results and ideas on these different topics; this Special Issue will provide an opportunity to make them available to a large audience.
Dr. Jacques Moutte
Guest Editor
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Keywords
- orthomagmatic ore deposits
- ultramafic rocks
- supergene alteration
- hydrometallurgy of nickel and cobalt
- chromite deposits
- nickel deposits
- platinum group minerals
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