Articles | Volume 37, issue 5
https://doi.org/10.5194/ejm-37-709-2025
© Author(s) 2025. 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-37-709-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Oct 2025
Research article |
| 14 Oct 2025
| 14 Oct 2025
Crystal chemistry and trace-element behaviour in tourmalines from Minas Gerais, Brazil
Florent Bomal
CORRESPONDING AUTHOR
Laboratory of Mineralogy, University of Liège B18, 4000 Liège, Belgium
Frédéric Hatert
Laboratory of Mineralogy, University of Liège B18, 4000 Liège, Belgium
Simon Philippo
Natural History Museum of Luxembourg, Münster street 25, 2160 Luxembourg, Luxembourg
Maël Guennou
Materials Research and Technology Department, Luxembourg Institute of Science and Technology, rue du Brill 41, 4422 Belvaux, Luxembourg
Martin Depret
Laboratory of Mineralogy, University of Liège B18, 4000 Liège, Belgium
Hao Wang
Swiss Gemmological Institute SSEF, Aeschengraben 26, 4051 Basel, Switzerland
Pierre Lefèvre
Swiss Gemmological Institute SSEF, Aeschengraben 26, 4051 Basel, Switzerland
Muriel Erambert
Department of Geosciences, University of Oslo, P.O. Box 1047 Blindern, 0316 Oslo, Norway
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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.
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Eur. J. Mineral., 37, 249–255, https://doi.org/10.5194/ejm-37-249-2025, https://doi.org/10.5194/ejm-37-249-2025, 2025
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Eur. J. Mineral., 37, 75–78, https://doi.org/10.5194/ejm-37-75-2025, https://doi.org/10.5194/ejm-37-75-2025, 2025
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Eur. J. Mineral., 36, 1005–1010, https://doi.org/10.5194/ejm-36-1005-2024, https://doi.org/10.5194/ejm-36-1005-2024, 2024
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Eur. J. Mineral., 36, 917–923, https://doi.org/10.5194/ejm-36-917-2024, https://doi.org/10.5194/ejm-36-917-2024, 2024
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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.
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Eur. J. Mineral., 36, 525–528, https://doi.org/10.5194/ejm-36-525-2024, https://doi.org/10.5194/ejm-36-525-2024, 2024
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 361–367, https://doi.org/10.5194/ejm-36-361-2024, https://doi.org/10.5194/ejm-36-361-2024, 2024
Dan Holtstam, Jörgen Langhof, Henrik Friis, Andreas Karlsson, and Muriel Erambert
Eur. J. Mineral., 36, 311–322, https://doi.org/10.5194/ejm-36-311-2024, https://doi.org/10.5194/ejm-36-311-2024, 2024
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We described two new minerals, igelströmite and manganoschafarzikite, from the Långban manganese–iron deposit in Värmland, Sweden. The chemical formulae are Fe3+(Sb3+Pb2+)O4 and Mn2+Sb3+2O4, respectively. They belong to a new mineral group, where all members have the same crystal structure. It is called the minium group, after the lead-oxide mineral that is the oldest known substance of this kind.
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 36, 165–172, https://doi.org/10.5194/ejm-36-165-2024, https://doi.org/10.5194/ejm-36-165-2024, 2024
Fabrice Dal Bo, Henrik Friis, Marlina A. Elburg, Frédéric Hatert, and Tom Andersen
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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.
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, 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
Eur. J. Mineral., 35, 397–402, https://doi.org/10.5194/ejm-35-397-2023, https://doi.org/10.5194/ejm-35-397-2023, 2023
Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 35, 285–293, https://doi.org/10.5194/ejm-35-285-2023, https://doi.org/10.5194/ejm-35-285-2023, 2023
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
Eur. J. Mineral., 34, 591–601, https://doi.org/10.5194/ejm-34-591-2022, https://doi.org/10.5194/ejm-34-591-2022, 2022
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 463–468, https://doi.org/10.5194/ejm-34-463-2022, https://doi.org/10.5194/ejm-34-463-2022, 2022
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 385–391, https://doi.org/10.5194/ejm-34-385-2022, https://doi.org/10.5194/ejm-34-385-2022, 2022
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 359–364, https://doi.org/10.5194/ejm-34-359-2022, https://doi.org/10.5194/ejm-34-359-2022, 2022
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 253–257, https://doi.org/10.5194/ejm-34-253-2022, https://doi.org/10.5194/ejm-34-253-2022, 2022
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 143–148, https://doi.org/10.5194/ejm-34-143-2022, https://doi.org/10.5194/ejm-34-143-2022, 2022
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 34, 1–6, https://doi.org/10.5194/ejm-34-1-2022, https://doi.org/10.5194/ejm-34-1-2022, 2022
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 33, 639–646, https://doi.org/10.5194/ejm-33-639-2021, https://doi.org/10.5194/ejm-33-639-2021, 2021
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 33, 479–484, https://doi.org/10.5194/ejm-33-479-2021, https://doi.org/10.5194/ejm-33-479-2021, 2021
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 33, 299–304, https://doi.org/10.5194/ejm-33-299-2021, https://doi.org/10.5194/ejm-33-299-2021, 2021
Yannick Bruni, Frédéric Hatert, Philippe George, Hélène Cambier, and David Strivay
Eur. J. Mineral., 33, 221–232, https://doi.org/10.5194/ejm-33-221-2021, https://doi.org/10.5194/ejm-33-221-2021, 2021
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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.
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 33, 203–208, https://doi.org/10.5194/ejm-33-203-2021, https://doi.org/10.5194/ejm-33-203-2021, 2021
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 33, 139–143, https://doi.org/10.5194/ejm-33-139-2021, https://doi.org/10.5194/ejm-33-139-2021, 2021
Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, and Stuart J. Mills
Eur. J. Mineral., 32, 645–651, https://doi.org/10.5194/ejm-32-645-2020, https://doi.org/10.5194/ejm-32-645-2020, 2020
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Short summary
Seventeen tourmalines from Brazil were investigated by structural and chemical techniques. Most samples are Na-dominant and belong to the alkali group. They correspond to fluor-elbaites or elbaites, except one sample, which corresponds to a rossmanite. Structural data indicate that the B site is fully occupied by boron, that the T site is occupied by Si, and that the Z site is mainly occupied by Al. The X site contains vacancies, Na, K, and Ca, and the Y site is mainly occupied by Li, Al, and Fe2+.
Seventeen tourmalines from Brazil were investigated by structural and chemical techniques. Most...
