Nature’s uncommon elements: plutonium and technetium

Some Chemical Properties of Element 43

C. Perrier, E. Segrè · The Journal of Chemical Physics · 1937 · 187 citations

Natural Sciences, Chemistry, Inorganic Chemistry +2

The age of unconformity-related uranium mineralization in the Athabasca Basin, northern Saskatchewan

G. L. Cumming, D. Krstic · Canadian Journal of Earth Sciences · 1992 · 97 citations

Natural Sciences, Earth Sciences, Geology +16

The Occurrence of Plutonium in Nature

Charles A. Levine, Glenn T. Seaborg · Journal of the American Chemical Society · 1951 · 58 citations

Natural Sciences, Chemistry, Earth Sciences +7

Isolation of naturally occurring technetium

B.T. Kenna, P. Κ. Kuroda · Journal of Inorganic and Nuclear Chemistry · 1961 · 58 citations

Natural Sciences, Chemistry, Nuclear Chemistry +1

Search for Elements 94 and 93 in Nature. Presence of 94²³⁹ in Pitchblende¹

Glenn T. Seaborg, M. L. Perlman · Journal of the American Chemical Society · 1948 · 57 citations

Natural Sciences, Chemistry, Analytical Chemistry +5