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    Elements used in radioactive dating

    Excalibur Mineral Corporation International Mineralogical Association Isotop X PANalytical Proto XRD Savillex Selfrag GUEST EDITORS: Brian O’Driscoll (University of Manchester, UK) and Jill Van Tongeren (Rutgers University, USA) For more than 50 years, layered mafic-ultramafic intrusions have served as natural laboratories for studying magma chamber processes and magmatic differentiation.Further enhancing our understanding of layered intrusion formation will yield valuable insights into the solidification of magmatic systems, the formation of precious metal deposits, and the timescales over which substantial crust-forming episodes occur.Radionuclides occur naturally and are artificially produced in nuclear reactors, cyclotrons, particle accelerators or radionuclide generators.There are about 730 radionuclides with half-lives longer than 60 minutes (see list of nuclides).This issue of Elements highlights the progressive movement towards an active environmental and societal strategy for sustainably harnessing mineral resources. The sustainability of a mineral resource depends, among other aspects, on what the mineral in question will be used for, price fluctuations, future resource requirements, and downstream manufacturing.A balance must be struck between the long-term commitment of developing a mineral deposit against the short-term threats of a changing commercial and social environment.With the longest half lives are the 32 primordial radionuclides that have survived from the creation of the Solar System.Over 60 further radionuclides are detectable in nature, either as daughters of these, or through natural production on Earth by cosmic radiation.

    During those processes, the radionuclide is said to undergo radioactive decay. The unstable nucleus is more stable following the emission, but will sometimes undergo further decay.The media has recently suggested there is a crisis looming over finding mineral resources, including critical metals.Centered on the sustainability of mineral resources, themes addressed in this issue include customer–supplier relationships, exploration, recycling and the circular economy, and environmental post-mining impacts.The aims of this issue of Mineral resources have been used for millennia and are a key to society’s development.With the growing importance of new technologies and the energy revolution, questions have arisen regarding the future availability of resources of metals and industrial minerals.

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