![]() ![]() Cesium is the most electropositive of the five naturally occurring alkali metals.The other metals liquid at room temperature are mercury, gallium, and francium. Cesium is very soft and is one of four metals that are liquid at or near room temperature.This list was developed to serve as an initial focus, pursuant to Executive Order 13817, ‘‘A Federal Strategy to Ensure Secure and Reliable Supplies of Critical Minerals” (82 FR 60835). Department of the Interior, in coordination with other executive branch agencies, published a list of 35 critical minerals (83 FR 23295), including cesium. ![]() The 1950s began to see the use of cesium in electronics.Cesium found no significant application until it was used in radio vacuum tubes in the 1920s.In 1881, Carl Sefferberg isolated cesium metal by electrolysis of its salts.Discovered by Robert Bunsen and Gustav Kirchhoff in 1860, this new element was named “cesium” after the two prominent blue lines of its emission spectrum (from Latin “caesius,” meaning “heavenly blue”).Cesium is the first element discovered via emission spectroscopy.For these reasons, the United States has declared cesium to be a Critical Mineral Resource essential for national sovereignty.īeyond the basics above, what else should we know about cesium? Check out the interesting facts below! With cesium isotopes used as an atomic resonance frequency standard in atomic clocks, and playing a vital role in aircraft guidance systems, global positioning satellites, and internet and cellular telephone transmissions, a cesium supply crunch cannot be allowed and resources must be monitored closely. to secure necessary cesium resources in the future. Considering that all cesium used by the United States is imported, it cannot be disputed that trade wars and geopolitical tensions could limit the ability of the U.S. Unfortunately, that operation ceased mining at the end of 2015 and has continued to supply cesium products from stocks. sourced the majority of its pollucite, the principal cesium mineral, from the largest known deposit in North America at Bernic Lake, Manitoba, Canada. However, the United States is completely dependent on cesium imports. ![]() Because cesium supply is vast, and most cesium reserves are located in geopolitically stable countries, no supply disruptions are expected by analysts. The market for cesium is relatively small and world reserves are massive when compared to world demand. ![]()
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