Unlike Murchison, the Tagish Lake meteor shows no signs of amino acids, but shows a number of cyclic and ring-aromatic carbon chains. Evidence of carbon buckeyballs, or fullerenes, have a characteristic cage-like connections that resemble the geodesic domes promoted by architect and futurist, Buckminster Fuller.
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Compared to Murchison, Tagish Lake rocks reflect a distinct evolutionary branch for carbon in the early solar system. What carbon-rich material that is soluble, shows a more primitive, less complex category of chemistry.
Oh, well.
Methinks old Bucky would have been tickled pink by the thought that Life could have come to earth in meteoric 'spaceships' full of geodesic fullerene structures...afterall he wanted US to live in geodesic domes too...lolol