1789,1824 Zirconium

The book of science

Tom Sharp

Berlin, StockholmMartin Heinrich Klaproth, Jöns Jacob Berzelius elements Zirconium


Atomic number 40

Leshem, Liguria

The decay of trace amounts of uranium and thorium in zircons have helped date the oldest rocks on earth. We also look for traces of more recent things.

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