European Journal Publishes Three New Mineralogy Papers

The European Journal of Mineralogy released its newest issue today, containing three research papers covering different aspects of mineral science. None of them announced a new mineral species or gemstone discovery, but they provide fresh insights into existing fields.

The first paper is “IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 92,” authored by Ferdinando Bosi, Frédéric Hatert, Marco Pasero, and Stuart J. Mills. It outlines recent updates to naming conventions for minerals and discusses how new classifications can be applied in practice.¹

The second study, titled “Preservation of water concentration in mantle xenoliths: a case study from Allègre and Ray Pic volcanoes (French Massif Central),” was written by Konstantinos Thomaidis, Jannick Ingrin, Etienne Deloule, Lydéric France, and Huan Chen. It investigates how hydrous-point-defect pyroxenes in mantle xenoliths preserve deep hydrogen signatures and examines whether these xenoliths retain their original water content after lava emplacement and cooling at the surface. The authors conclude that both effusive and explosive eruption modes influence the preservation process.¹

The third article, “Thermally activated multistep alteration of Fe2+-bearing fluorophlogopite revealed by in situ Raman spectroscopy,” features Christian Reinberg, Stylianos Aspiotis, Thomas Malcherek, Stefan T. M. Peters, and Boriana Mihailova as co‑authors. By applying high-temperature Raman spectroscopy they show that a phonon-driven structural instability near 600 K mobilizes interlayer K⁺ cations; above 1100 K H⁺ delocalises, and oxidation of Fe occurs around 1300 K, leading to partial K⁺ leakage and structural decomposition.¹