The datasets include the results of microcosm experiments documenting the generation of hydrogen gas, hydrogen peroxide and dissolved iron from silicate rocks and pyrite at zero deg C after they have been 'flash heated' to different temperatures. The data is in excel format. This data is from an upcoming publication, Flash Heating Boosts the Potential for Mechanochemical Energy Sources for Subglacial Ecosystems' Stone, Jordan., Edgar, John O., Rutherford, Johnny., Gill-Olivas, Beatriz, Tranter, Martyn., Gould, Jamie A., Xavier, Cijo M. & Telling, Jon. Submitted to Frontiers in Geochemistry.