Fig. 13From: Geologic framework of the Fang Hot Springs area with emphasis on structure, hydrology, and geothermal development, Chiang Mai Province, northern ThailandSketch map of the Huai San fluorite mine made by Shawe (1984) showing location of warm springs in the mine. Carboniferous ages assumed at the time are now considered early Paleozoic sediments and Triassic graniteBack to article page