Host: Japan Association of Mineralogical Sciences
Fractures provide significant influences on transport of energy and heat. We conducted hydrothermal flow through experiments using pure water and silica supersaturated solution to reveal a porosity structure and permeability evolution during the dissolution-precipitation in granite fracture. In dissolution experiments, local dissolution of Qtz Gouges made some flow paths and increase fracture permeability. In precipitation experiments, silica precipitation strongly decreased the permeability.