Technical Session Chair Geochemical Applications of pXRF: Environmental, Exploration, and Geology; Geological Society of America National Meeting Workshop (Sept 2016); Co-conveners: Ross Knight, Bruce Kjarsgaard, Geological Survey of Canada, Samuel Mutiti, Georgia College and State University. Significant advances in portable X-ray fluorescence spectrometry during the past decade provide a cost- effective tool for the rapid generation of geochemical data. This session assembled presentations on pXRF applications, including environmental studies, chemostratigraphy, and mineral deposit exploration.