Radium is found only in uranium ores and only in exceedingly small quantities.
"The Economic Aspect of Geology" by C. K. Leith
It usually occurs with silver, that is, the uranium mother ore does, through the disintegration of which radium is formed.
"Astounding Stories of Super-Science, June, 1930" by Various
But some isotopes of uranium and thorium have little beta, with some alpha and gamma, so Baxter concluded we had powdered uranium ore.
"The Blue Ghost Mystery" by Harold Leland Goodwin
The uranium ore is processed by the Rare Metals Combine near Sofia.
"Area Handbook for Bulgaria" by Eugene K. Keefe, Violeta D. Baluyut, William Giloane, Anne K. Long, James M. Moore, and Neda A. Walpole
Curie examined at the same time the salts of uranium and a number of uranium ores.
"An Introduction to the History of Science" by Walter Libby
State mining regulators have found heaps of toxic uranium ore at a dormant Cotter Corp.
Leaders of the Virginia county that is home to one of the world's largest uranium deposits are set to debate the state's 30-year ban on the mining of the radioactive ore.
A multi-agency study group's report on uranium mining in Virginia is up for questioning in the county where a mining company wants to tap a 119- million-pound deposit of the ore.
Powertech Uranium Corp. Plans to pump groundwater into the underground ore deposits near Edgemont to dissolve the uranium .
A multi-agency group studying the possibility of uranium mining in Virginia issued a dense report Friday to guide the General Assembly if it decides to end the state's 30-year ban on the mining of the radioactive ore.