Dear colleagues and NAM-philes, Please consider submitting an abstract to session 02b at Goldschmidt 2021, Lyon: "Water in nominally anhydrous minerals: detection, distribution and consequences », Session Description: The presence of even small amounts of water-derived species (H, OH-, H2; on the order of parts per million) can affect rheology, electrical conductivity, melting temperature, seismic attenuation and diffusivity, and the total water content of the mantle may approach, or even exceed the water budget of the Earth's surface. It is recurrently proposed to be a key component of geodynamics. However, despite its considerable importance, and in part due to a scarcity of well-characterized natural samples and experimental/analytical challenges, many aspects of this field remain ambiguous, poorly quantified and even controversial. The aim of this session is to bring together researchers investigating all aspects of water in the NAMs found in the Earth's crust, mantle and core. We welcome contributions including, but not limited to: 1) experimental and theoretical studies of the content, speciation and distribution of water and derived-species within and between phases; 2) quantification of the fluxes of water at subduction zones and volcanic centres, and other aspects of the deep water cycle; 3) calibrations of, and advances in, quantitative measurement techniques; 4) diffusion of hydrogen in nominally anhydrous minerals; 5) studies of NAM-hosted inclusions; 6) studies of water contents in xenoliths, relevant extra-terrestrial samples, exhumed rocks, etc; 7) the effect of water on physical and chemical properties of the deep Earth’s phases (e.g. electrical conductivity, rheology, seismic attenuation); 8) relationships between nominally hydrous and anhydrous minerals and 9) isotopic studies and the origins of Earth's water. Submissions from students and early career researchers are especially encouraged. Convened by Mike Jollands (Lamont Doherty Earth Observatory, Columbia University), José Alberto Padrón-Navarta (IACT/CSIC-Universidad de Granada/Géosciences Montpelier) Sylvie Demouchy (Géosciences Montpelier/CNRS), with keynote speaker Bertrand Moine (Université Jean Monnet, Saint-Étienne). Deadline is February, 26th. https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/Session/1594 <https://2021.goldschmidt.info/goldschmidt/2021/meetingapp.cgi/Session/1594> Mike Jollands, José Alberto Padrón-Navarta, Sylvie Demouchy _____________________________ Dr. Sylvie Demouchy Directrice de Recherche CNRS Geosciences Montpellier CNRS & Université de Montpellier Place Eugène Bataillon 34095 Montpellier, France Office: +33 (0)467 14 49 42 Lab: +33 (0)467 14 36 07 webpage: http://www.gm.univ-montp2.fr/spip.php?article773