European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 37, issue 5
Articles | Volume 37, issue 5
https://doi.org/10.5194/ejm-37-627-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/ejm-37-627-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 5
Research article
 | 
15 Sep 2025
Research article |  | 15 Sep 2025

Vielleaureite-(Ce), a new epidote of the dollaseite group, coexisting with Mn-dominant hellandite in Mn deposits of the central Pyrenees

Alain Ragu, Luca Bindi, Paola Bonazzi, Laurent Remusat, and Christian Chopin

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Latest update: 28 Jul 2026
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Short summary
A new rare-earth-bearing silicate is described from a manganese ore deposit in the Pyrenees. It belongs to the epidote family and is characterised by the formula Mn2+Ce(MgAlMn2+)(Si2O7)(SiO4)F(OH).  This new mineral commonly contains inclusions of an Mn-rich yttrium borosilicate, a potentially new mineral of the hellandite family. This is a new type of occurrence for hellandite – while rare earths are under the spotlight.
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Celebrating the outstanding contribution of Paola Bonazzi...