Mechanisms for concentrating critical metals in granitic complexes: insights from the Mourne Mountains, Northern Ireland
dc.contributor.author | Moore, KR | |
dc.contributor.author | Moles, NR | |
dc.contributor.author | Rollinson, GK | |
dc.contributor.author | Lusty, PAJ | |
dc.date.accessioned | 2023-12-20T12:06:01Z | |
dc.date.issued | 2023-12-19 | |
dc.date.updated | 2023-12-20T10:27:29Z | |
dc.description.abstract | The Tellus stream sediment and deep soil geochemistry data sets for Northern Ireland were used to locate four types of critical metals anomalies in granite bedrocks of the Mourne Mountains. A curvi-linear array of Nb, REE, Th and U soil anomalies across the eastern Mourne Mountains correlated with late-stage and eutectic temperature minerals in the roof zone of the most peralkaline F- and volatile-rich granite body, remobilized on micron to millimetre scales. Li, Be, B, As, Sn, Mn3+ and Ce4+ partitioned into pockets of late-stage heterogeneously distributed F-rich silicic residual melts and relatively oxidizing halide-rich magmatic fluids, resulting in drusy mineral and hydrothermal assemblages. Isolated soil anomalies correlated with amorphous Mn3+- and Ce4+-rich masses infilling drusy cavities, which resulted from short-distance percolation of small volumes of late-stage magmatic fluids. A significant As plume in stream sediments emanated from a greisen that hosted multiple critical and base metals including Sn, from reactions between large volumes of magmatic As + halide-rich fluids and mafic silicate + diverse accessory minerals on the metre- to kilometre-scale along geological structures. Diverse, small-scale REE anomalies in the soil data along structural features in the western Mournes correlate with vein mineralization resulting from episodic migration of hydrous fluids of variable composition, probably with a much smaller magmatic component than elsewhere. The regional geochemical dataset proved useful to develop a multi-stage model for enrichment of critical metals in the Mourne Mountains granites, which is analogous to the petrogenesis of some of the igneous-hosted economic deposits of critical metals. | en_GB |
dc.description.sponsorship | Department of Enterprise, Trade and Investment | en_GB |
dc.description.sponsorship | Geological Survey of Northern Ireland | en_GB |
dc.identifier.citation | Vol. 1, No. 1, article 31 | en_GB |
dc.identifier.doi | 10.1144/geoenergy2023-023 | |
dc.identifier.grantnumber | Tellus Border Project 10761 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/134836 | |
dc.identifier | ORCID: 0000-0003-0182-3204 (Moore, KR) | |
dc.identifier | ORCID: 0000-0002-0655-6304 (Rollinson, GK) | |
dc.language.iso | en | en_GB |
dc.publisher | The Geological Society | en_GB |
dc.relation.source | Data availability: The Tellus survey data is Open Access and can be accessed at https://www.gsi.ie/en-ie/programmes-and-projects/tellus/Pages/default.aspx. The majority of the remaining data is summarized in the tables presented in this article. | en_GB |
dc.relation.url | https://www.gsi.ie/en-ie/programmes-and-projects/tellus/Pages/default.aspx | en_GB |
dc.rights | © 2023 The Author(s). Published by The Geological Society of London for GSL and EAGE. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/) | en_GB |
dc.subject | Geochemistry | en_GB |
dc.subject | Mineral and Ore Deposits | en_GB |
dc.subject | Mineralogy | en_GB |
dc.title | Mechanisms for concentrating critical metals in granitic complexes: insights from the Mourne Mountains, Northern Ireland | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2023-12-20T12:06:01Z | |
dc.identifier.issn | 2755-1725 | |
exeter.location | 37th Annual Meeting, Mineral Deposit Studies Group, Oxford | |
dc.description | This is the final version. Available from The Geological Society via the DOI in this record. | en_GB |
dc.identifier.journal | Geoenergy | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2023-12-04 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2023-12-19 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2023-12-20T11:58:49Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2023-12-20T12:06:05Z | |
refterms.panel | B | en_GB |
refterms.dateFirstOnline | 2023-12-19 |
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Except where otherwise noted, this item's licence is described as © 2023 The Author(s). Published by The Geological Society of London for GSL and EAGE. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/)