Andrés Manuel Del Rio:
Andrés Manuel Del Rio was a Spanish mineralogist.
Birth:
November 10, 1764 in Madrid, Spain
Death:
March 23, 1849 in Mexico City, Mexico
Claim to Fame:
Rio was a Spanish mineralogist who discovered the element vanadium. He named the his discovery pancromium and sent his samples to be verified. They were mistakenly identified as chromium and his claim was rejected. Twenty nine years later, Swedish chemist Nils Sefström rediscovered the element and named it vanadium.
