Radium is a decay product of uranium.
Radium exist in very low concentrations in uranium and thorium ores.
Radium exist in very low concentrations in uranium and thorium ores.
Radium is a decay product of uranium and is therefore found in all uranium-bearing ores. (One metric ton of pitchblende yields 0.0001 grams of radium). Radium was originally acquired from pitchblende ore from Joachimsthal, Bohemia, in the Czech Republic. Carnotite sands in Colorado provide some of the element, but richer ores are found in the Democratic Republic of the Congo and the Great Lakes area of Canada, and can also be extracted from uranium processing waste. Large radium-containing uranium deposits are located in Canada (Ontario), the United States (New Mexico, Utah, and Virginia), Australia, and in other places.
Radium exist only in very small concentrations in uranium and thorium ores; radium hasn't its own minerals.
Radium has not its own minerals; radium exist in extremely low concentrations in uranium and thorium ores.
Radium exist in very small concentrations in uranium ores.
Radium exist in uranium ores but in very low concentrations.
Radium exist in very low concentrations in uranium and thorium ores; it is very difficult and expensive to extract radium from these ores.
Radium exist in very low concentrations in uranium and thorium ores.
Radium exist in extremely low concentrations in uranium and thorium ores.
Radium exist in extremely low concentrations in uranium and thorium ores.
Separation and refining of radium and polonium from uranium ores by different chemical technology processes.