Articles | Volume 36, issue 4
https://doi.org/10.5194/ejm-36-687-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-36-687-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
30 Aug 2024
Research article |
| 30 Aug 2024
| 30 Aug 2024
Crystal chemistry of Belgian ardennites
Martin Depret
CORRESPONDING AUTHOR
Laboratory of Mineralogy B18, University of Liège, 4000 Liège, Belgium
Frédéric Hatert
Laboratory of Mineralogy B18, University of Liège, 4000 Liège, Belgium
Michel Blondieau
independent researcher: Val des Cloches 131, 6927 Tellin, Belgium
Stéphane Puccio
independent researcher: Rue des Fontaines 156, 4041 Vottem, Belgium
Muriel M. L. Erambert
Department of Geosciences, University of Oslo, P.O. Box 1047 Blindern, 0316 Oslo, Norway
Fabrice Dal Bo
Laboratory of Mineralogy B18, University of Liège, 4000 Liège, Belgium
Florent Bomal
Laboratory of Mineralogy B18, University of Liège, 4000 Liège, Belgium
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Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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We report the description and the characterization of a new mineral species, found in a rock sample from the geological formation called the Pilanesberg Complex, South Africa. This is a silicate mineral that contains a significant amount of sodium, calcium, iron, titanium and fluorine. Its atomic structure shows that it is related to other wöhlerite-group minerals. This work provides new insights into the crystallization conditions that ruled the formation of the Pilanesberg complex.
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Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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There are unresolved problems related to the nomenclature and identification of mineral species belonging to the triphylite group of minerals. They can be solved by discarding the traditional views on succession of mineral species during oxidation. In other words, it is necessary to separate the concepts of the origin of the mineral and the boundaries of the species.
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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Ferdinando Bosi, Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 75–79, https://doi.org/10.5194/ejm-35-75-2023, https://doi.org/10.5194/ejm-35-75-2023, 2023
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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The reliquary crown, hosted in the diocesan museum of Namur (Belgium), was produced during the beginning of the 13th century. This beautiful piece of goldsmithery is decorated with approximately 400 pearls and coloured stones which were investigated by Raman and pXRF techniques. Emeralds, pink spinels, sapphires, almandine garnets, turquoises, and pearls were identified. The gemstones, contemporary with the crown, probably arrived in Europe by the silk trade road.
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Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
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Short summary
Ardennite is a rare Mn-rich aluminosilicate that was originally described in Salmchâteau, Belgium. In the last few years, new samples of ardennites have been found at several localities close to Salmchâteau. These samples were analysed by electron microprobe, single-crystal X-ray diffraction, and infrared spectroscopy. The results given in this paper allow us to identify the main substitution mechanisms that occur in Belgian ardennites and to discuss the nomenclature of the ardennite group.
Ardennite is a rare Mn-rich aluminosilicate that was originally described in Salmchâteau,...
