MSA at GSA Part 1: Mineralogical Sightings By Clem Hamelin MSA was at the Geological Society of America @geosociety Annual Meeting in Denver recently! We're highlighting some exciting MSA at GSA26 mineralogical sightings in Denver. #MSACommunications #MineralMonday #geosociety

Coming up fast - the deadline to submit abstracts for the 2027 MSA Tucson Meeting! Submit by October 31, 2026. Join us for a great meeting in Tucson in February.

American Mineralogist: Disentangling magmatic-hydrothermal evolution of highly fractionated granite through the integration of zircon and monazite U-Th-Pb and Hf/Nd-O isotopes Xing Zhang, et al. doi.org/10.2138/am-2025-9941

Thin Section Thursday! Andesite from Indonesia with a twinned pyroxene in the center. Taken under cross-polarized light. Contributed by Bernhard W. Seubert. You can contribute too! Send image(s) and short caption to akoziol1 (at) udayton dot edu. #thinsectionthursday

American Mineralogist: High-resolution Raman spectroscopy of calcium phosphate apatite along the F-OH, F-Cl, and Cl-OH binaries Kyle Ashley, Matthew Steele-MacInnis, Daniel Harlov, John Hughes, Robert Bodnar doi.org/10.2138/am-2025-9938

MSA Tucson 2027 abstracts portal open, and abstract deadline is October 31, 2026! Submission portal: abstractscorecard.com/cfp/su… Meeting webpage: msaweb.org/annualmeeting/ Join us in Tucson Feb. 14 – 18, 2027!

American Mineralogist: The periclase-wüstite stability field and the exsolution of coherent nanocrystalline spinel ferrite at 0.1 MPa Caterina Melai, et al. (Open Access) doi.org/10.2138/am-2025-9930

Mineral Monday! Graphites of the Ticonderoga Area, New York By William Peck, Colgate University Graphite was mined in the Adirondacks from 1850-1920. It formed from organic and igneous carbon sources during 2 orogenies. #MSACommunications #MineralMonday #graphite #Adirondacks

American Mineralogist: Fluid assimilation-fractional crystallization drives heavy zinc isotope enrichment in Himalayan leucogranites Cuihua Luo, Gengxin Deng, Shubin Fang, Xiao Chi Liu, Fang Huang doi.org/10.2138/am-2025-9889

Thin Section Thursday! Upper image: XPL. Lower image: Cathodoluminescence. 2.8 Ga tonalite from the Beartooth Mtns, MT with anti-perthitic exsolution of microcline (blue in CL) in a plagioclase host. Contributed by Darrell Henry. #thinsectionthursday

American Mineralogist: Iron phyllosilicates: Targeted removal by acid treatment and their differing potential to immobilize aqueous sulfide Spencer Bingham, Peter Solheid, Alon McCormick, R. Lee Penn doi.org/10.2138/am-2025-9800

American Mineralogist: K+/Na+-smectite indicates a lake 3500 million years ago in Gale crater on Mars Xiaorong Qin, et al. The extent and persistence of liquid water in Gale crater are central to understanding Mars’ past habitability. doi.org/10.2138/am-2025-9781

Mineral Monday! Minerals Day Around the World By Fernando Núñez Useche October 12, 2026 is Minerals Day, part of Earth Science Week. Here we share an educational event taking place in Mexico. #MSACommunications #MineralMonday #MineralsDay #EarthScienceWeek #education

American Mineralogist: Electrical conductivity of MgCO3 under thermodynamic conditions of Earth's interior: a first-principles investigation Samuel Santos, João Francisco Filho, Lucy Vitória Assali doi.org/10.2138/am-2024-9719

Thin Section Thursday! Holmquistite in Mica Schist Crossed polars, horizontal length: 7 mm Xinjiang, Uygur Autonomous Region #ThinSectionThursday You can contribute too. Send images and captions to akoziol1 at udayton dot edu.

American Mineralogist: Synthesis of K- and Fe-rich davemaoite Oliver Tschauner, Shichun Huang, Justin Hardin, Michael Michael Petaev, Logan Magad-Weiss, Erinna Tschauner, Melanie White, Ashkan Salamat, Nicholas Dygert, Ping Wang (Open Access) doi.org/10.2138/am-2026-1028…

American Mineralogist: Sunshuite, FeBi2S4, a new member of the pavonite homologous series from the Jiawula-Chaganbulagen Ag-Pb-Zn ore field, Inner Mongolia, China Kaixuan Hui, et al. doi.org/10.2138/am-2025-1009…

MSA Tucson 2027 meeting: Feb. 14 - 18 2027 The abstract deadline: Oct. 31, 2026 The link to the abstract submission portal is available on the main page of the MSA website: msaweb.org. --> donate to the student travel fund via the "Donate" button on the website.

No #MineralMonday today. Without contributions from people like you, I have nothing to post. Would you like to feature your research, field photos, a neat mineral, a recent publication? Please send information and up to 4 images to akoziol1 at udayton dot edu.