Rubidium, considered a specialty metal, was discovered in 1861 but had extremely limited industrial use until the 1920s. Small quantities of rubidium-containing minerals were mined in the United States prior to the…
Rubidium, considered a specialty metal, was discovered in 1861 but had extremely limited industrial use until the 1920s. Small quantities of rubidium-containing minerals were mined in the United States prior to the…