The mission of SEES (Synchrotron Earth and Environmental Science) is to advance research and education in synchrotron-based Earth and environmental science to better understand our planet from the atmosphere to the core, to address societally relevant problems, and to train the next generation of scientists. SEES is responsible for the management, operation, and development of multiple user facilities hosted at four DOE-operated US synchrotrons: Advanced Photon Source (APS), Advanced Light Source (ALS), National Synchrotron Light Source II (NSLS-II), and Stanford Synchrotron Radiation Lightsource (SSRL).
2025 SEES-ISRD Joint Meeting
SEES and ISRD invite you to attend our annual meeting to be held jointly at the University of Chicago on August 11-13, 2025. Keynote speakers will discuss topics in rock and mineral deformation and rheological properties in Earth, and there will be a poster session with a broad scientific focus. All SEES and ISRD researchers are welcome and encouraged to attend. Click here to learn more.
Recent Publications
Formation of the 15 Å phase as the most expanded hydrated mineral in cold subduction zone
Bang, Y., Kim, J., Choi, J. et al. Formation of the 15 Å phase as the most expanded hydrated mineral in cold subduction zone. Nat Commun 16, 2279 (2025). https://doi.org/10.1038/s41467-025-56672-6
Oxybarometry of Reduced Silicate Glasses: Using Multivariate Methods to Constrain Cr Oxidation States with Application to Lunar Glasses
Molly C. McCanta, M. Darby Dyar, Stephen R. Sutton, Sarah E. Roberts, Cai R. Ytsma; Oxybarometry of Reduced Silicate Glasses: Using Multivariate Methods to Constrain Cr Oxidation States with Application to Lunar Glasses. American Mineralogist 2025; doi: https://doi.org/10.2138/am-2024-9602
The fate of nitrogen in deep magma oceans
Mallick, Ekanshu, Kelsey Prissel, Kevin Righter, and Colin RM Jackson. “The fate of nitrogen in deep magma oceans.” Geochimica et Cosmochimica Acta 394 (2025): 298-318.
Continuous Evolution of Eu2+/Eu3+ Mixed Valency Driven by Pressure and Temperature
Mingyu Xu, Greeshma C. Jose, Mouyang Cheng, Cheng Peng, Jose L. Gonzalez Jimenez, Wenli Bi, Mingda Li, and Weiwei Xie, Continuous Evolution of Eu2+/Eu3+ Mixed Valency Driven by Pressure and Temperature, The Journal of Physical Chemistry A 2025 129 (9), 2371-2377. DOI: 10.1021/acs.jpca.4c08660
Complex Adsorption Behavior of Neodymium and Ytterbium on Structurally-Distinct Alumina Surfaces
Fang, Yihang, Sang Soo Lee, Greg J. Ledingham, Joanne E. Stubbs, Peter J. Eng, and Jeffrey G. Catalano. “Complex Adsorption Behavior of Neodymium and Ytterbium on Structurally-Distinct Alumina Surfaces.” Environmental Science & Technology (2025).
Pressure-Driven Polar Orthorhombic to Tetragonal Phase Transition in Hafnia at Room Temperature
Janice L. Musfeldt, Sobhit Singh, Kevin A. Smith, Xianghan Xu, Sang-Wook Cheong, Zhenxian Liu, David Vanderbilt, Karin M. Rabe, Pressure-Driven...
Science Highlights
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Latest Happenings

XFM welcomes new beamline scientist
XFM at NSLS II / BNL welcomes new beamline scientist Roberto Colina-Ruiz.

APS 6BM achieved first light coming out of the recent APS Upgrade.
Haiyan Chen opens the shutter as 6BM beamline / APS achieved first light coming out of the recent...

SEES Booth at Goldschmidt Conference
SEES will have an exhibition booth at the Goldschmidt conference in Chicago this year. If you are...

Data and Metadata Formats for XAFS
Matt Newville, GSE scientist, presented “Data and Metadata Formats for XAFS” at Q2XAFS2024.