First evidence of natural elemental fluorine

First direct evidence that elemental fluorine occurs in nature – Fluorine is the most reactive chemical element. Until now, the accepted scientific doctrine was that therefore it cannot exist in nature in its elemental form. A team of chemists from Munich has now, for the first time, successfully identified natural elemental fluorine in a special fluorite, the "fetid fluorite" or "antozonite." Reference: Occurrence of Difluorine F2 in Nature—In Situ Proof and Quantification by NMR Spectroscopy, Angewandte Chemie Int Ed., 4 JUL 2012 DOI: (10.1002/anie.201203515).