Radium of radium Curie used the residues after extraction of uranium from pitchblende. The uranium had been extracted by dissolution in sulfuric acid leaving radium sulfate, which is similar to barium sulfate but even less soluble in the residues. The residues also contained rather substantial amounts of barium sulfate which thus acted as a carrier for the radium sulfate. The first steps of the radium extraction process involved boiling with sodium hydroxide followed by hydrochloric acid treatment to remove as much as possible of other compounds. The remaining residue was then treated with sodium carbonate to convert the barium sulfate into
Radium, Colorado which was formerly mined in Colorado in the early 20th century. . The Radium Recreation Site, part of the Upper Colorado River Special Recreation Management Area managed by the Bureau of Land Management, is on the south bank of the Colorado River across from the community. Radium Hot Springs is located on the river bank, a few miles south of Radium, and about 15 miles from Kremmling. Radium, Colorado Radium is a small rural unincorporated community in southwestern Grand County, Colorado, United States. The community sits in the mountains along an isolated stretch of Colorado River downstream from Gore Canyon