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Obituary Jacques Touret (1936–2024) Jacques Touret (Fig. 1) passed away on 11 March 2024 in Paris at the age of 88 after a long illness. He is survived by his wife Lydie Touret, four children, and 14 grandchildren. Jacques was a pioneer in the field of fluid inclusions and its applications in high-grade metamorphic rocks. In his retrospective paper in Geoscience Fron- tiers (Touret, 2014), Jacques described himself as someone who dedicated ‘‘. . .a great part of my scientific life to the study of minute bubbles in rocks issued from the most extreme depths of our mother Earth”. He will be remembered as a very amiable person and his infectious enthusiasm for fluid inclusions. Jacques Léon Robert Touret was born on January 2, 1936, in Fumay (Ardennes, France). He studied at the Ecole Nationale Supérieure de Géologie (ENSG) in Nancy and the University of Nancy and obtained a MSc degree in engineering geology in 1958. From 1959 onwards, he was a lecturer at Ecole Nationale Supérieure de Géologie and started his PhD on the geology, petrol- ogy, and geochemistry of the Bamble area in southern Norway, with Prof. Marcel Roubault (director of the ENSG) as his formal supervisor and Prof. Tom F.W. Barth (Mineralogical-Geological Museum in Oslo) as his actual supervisor. His interest in Norwe- gian geology was triggered in 1957 when he completed a study internship at the Sydvaranger iron ore mine in northern Norway. He travelled by boat along the Norwegian coast to reach the mine, affording him the opportunity to observe the pristine Caledonian outcrops, which stimulated his desire to do petrology research in Norway. Inspired on the experimental petrological work done by H.G.F. Winkler (Universität Göttingen), whom he visited several times, Jacques proposed that the formation of granulites in south- ern Norway was related to the influx of CO 2-rich fluids. Bernard Poty’s development of the heating-freezing stage enabled Jacques to identify CO 2 fluid inclusions in the granulites, thereby validating his hypothesis. These findings were subsequently published in Lithos in 1971 (Touret, 1971). It was during his PhD research that Bernard Poty, Alan Weisbrod, and Jacques made Nancy a world- renowned place for geological fluid research. Jacques was appointed as an associate professor in structural geology at the Université de Nancy after he completed his PhD in 1969, followed by an appointment as a professor in petrology at the Université Paris 7 in 1972. In 1980, he became professor at the Vrije Universiteit in Amsterdam, where he established an inter- national centre of expertise for fluid inclusion studies. On his ini- tiative, a prototype Raman microspectrometer (Dilor Microdil 28) was installed in 1984, which was developed into a routine instru- ment for quantitative fluid inclusion analysis by Ernst Burke. Throughout his tenure at the Vrije Universiteit, Jacques hosted many international researchers (colleagues and PhD students) at his laboratory to do fluid inclusion research. The fluid inclusion laboratory at the Vrije Universiteit was unique in many ways. The room of the heating-freezing stage was directly connected to Jacques’ office through an adjoining door, making Jacques’ office an integral part of the laboratory. This door was never locked, allowing students and visitors always to have access to his extensive library. Notable was the massive leather chair in his office, which was used by Jacques (and some- times by his students and visitors) to take a nap. Behind his desk on the wall was a big portrait of Henry Sorby, who was the first sci- entist to emphasise the significance of fluid inclusions in minerals (Sorby, 1858). Jacques had a great notion of science history high- lighting the contributions of significant figures in fluid inclusion research, including, for example, Henry Sorby, Ferdinand Zirkel, Hermann Vogelsang, Ed Roedder, Georgi Lemmlein, and Bernard Poty. During his fluid inclusion course at the Vrije Universiteit, he often organised a student tour to the Teylers Museum in Haar- lem, which is the oldest science museum in The Netherlands, and where his wife Lydie was working as a researcher. Most impressive was Jacques’ extensive collection of fluid inclusion samples from all over the world. Opposite his office, in the corridor, was a display of detailed fluid inclusion drawings, illustrating Jacques’ research approach that any fluid inclusion study should start with detailed petrographic descriptions (Fig. 2) and the identification of so-called groups of synchronous inclusions. At Jacques’ retirement in 2001, Lithos published a special fluid inclusion issue dedicated to him. In the editorial of this issue, the guest editors wrote that after his retirement, ‘‘he will continue his work on science for many years to come”. This was not an under- statement. He moved back to France and became a volunteer for ABC Mines (Association des Amis de la Bibliothèque et des Collec- tions de l’Ecole des Mines de Paris), being involved with giving lec- tures and organizing geology excursions. As a board member of French Committee on the History of Geology, he wrote numerous publications on the history of geological research. In addition, he remained research-active and published numerous papers until he was not able to do this anymore because of his illness. His last paper was published in July 2022 (Touret et al., 2022). Geoscience Frontiers published a special issue in 2014 (Volume 5, Issue 5) in his honor, titled, ‘‘The role of fluids in the lower crust and upper mantle: A tribute to Jacques Touret” where, in the opening article titled, ‘‘How everything started: A retrospective” Jacques traced the history of his education and career, breakthrough discovery of CO 2 inclusions in granulites and also his career devoted to the study of fluids in the deep Earth (Touret, 2014).