The Thomas Range is a mountain range of north central Juab County of western Utah, United States. Topaz Mountain is in the southern part of the range and Spor Mountain lies to the southwest. References External links Spor Mountain beryllium mines, article at NASA Earth Observatory, July 16, 2021 Slides of the Fluorspar, Beryllium, and Uranium Deposits at Spor Mountain, Utah by David A. Lindsey, USGS Mountain ranges of Utah Mountain ranges of Juab County, Utah