European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 37, issue 6
Articles | Volume 37, issue 6
https://doi.org/10.5194/ejm-37-841-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-37-841-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 6
Research article
 | 
04 Nov 2025
Research article |  | 04 Nov 2025

Formation of the Ertelien and Langedalen magmatic Ni–Cu sulfide deposits in Norway: investigating the evolution of platinum-group-element-depleted systems at convergent margins

Eduardo Mansur, Alf Andre Orvik, Iain Henderson, Ana Carolina Miranda, Trond Slagstad, Sarah Dare, Terje Bjerkgård, and Jan Sverre Sandstad

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Short summary
The Ertelien and Langedalen Ni–Cu sulfide deposits are hosted in gabbronorite intrusions formed in a convergent margin. The Ertelien deposit contains contact-related sulfides, whereas the Langedalen deposit hosts massive sulfides within extensively deformed gabbronorite lenses. Both are depleted in platinum-group elements (PGEs), which could be related to a metasomatized pyroxenitic mantle source. Isotopic data support a subduction-related origin around 1550 Ma, with magmatic signatures preserved despite later alteration.
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