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The macromolecular carbonaceous material contained in the meteorites of Orgueil, Murchison and Tagish Lake, and in an early Archean chert from the Warrawoona Group (Australia) was analyzed by Electron Paramagnetic Resonance. The meteoritic macromolecular material distinguishes itself from its terrestrial counterpart by the presence of diradicaloids (alkyl polysubstituted aromatic moieties bearing...
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