New Minerals and Raman Study Published

Three studies appeared in the European Journal of Mineralogy (volume 38, 2026). The IMA Commission on New Minerals, Nomenclature and Classification newsletter 92 described newly proposed mineral species and updates to nomenclature. It was authored by Ferdinando Bosi, Frédéric Hatert, Marco Pasero and Stuart J. Mills ¹.

A second article examined how water concentration is preserved in mantle xenoliths from Allègre and Ray Pic volcanoes in the French Massif Central. Konstantinos Thomaidis, Jannick Ingrin, Etienne Deloule, Lydéric France and Huan Chen report that hydrous‑point‑defect pyroxenes trace lithospheric water content but little is known about mechanisms that preserve deep hydrogen signatures. They investigated whether water is modified during lava emplacement, cooling at the surface, and eruption mode (effusive versus explosive) ¹.

The third study applied high‑temperature Raman spectroscopy to fluorophlogopite containing hydroxide and Fe²⁺. Christian Reinberg, Stylianos Aspiotis, Thomas Malcherek, Stefan T. M. Peters and Boriana Mihailova found a phonon‑driven structural instability near 600 K that mobilizes interlayer K⁺ cations acting as charge carriers. Above 1100 K H⁺ delocalize and contribute to transport processes; above 1300 K oxidation of Fe occurs with limited dehydrogenation and dehydroxylation, leading to partial K⁺ leakage and structural decomposition ¹.