Rubidium is a lithium, cesium and other metal smelting process by-products. These minerals contain trace amounts of rubidium.

Rubidium is to create electronic devices (photomultiplier tubes photoelectric tubes), spectrophotometer, automatic control, spectroscopy, color film, color television, radar, laser and glass, ceramics, electronic clock and other important raw materials; in space technology, ion propeller and thermionic energy conversion devices need a lot of Rubidium; rubidium and boron hydrides can be used for high-energy solid fuel; radioactive rubidium mineral age can be determined, in addition to rubidium compounds used in pharmaceuticals, paper industry; also serve as a vacuum the system getter. The role similar to the purification getter agent, may contaminate the system can remove the excess gas.