Abstract
The Popigai astrobleme is a unique geological object with huge storages of impact diamonds of high hardness quality being perspective as an abrasive material. In spite on very well-known after-graphitic nature of the Popigai diamonds, it was predicted that a part of them might have non-graphitic precursor as the target of the meteorite crater partly consist of sedimentary rocks with coals and bitumens. In this study by use of a complex of modern methods we have analyzed unusual carbon particles from impact melt rocks of the Popigai astrobleme. The studied carbons according to the provided Raman studies belong to high pressure polymers with hydrogenated carbons - hydrogenated amorphous tetrahedral diamond-like carbon (ta-C:H) and rare polymeric a-C:H. A list of typomorphic features of the high pressure non-crystalline carbons are described in the paper on the basis of UV Raman spectroscopy, scanning electron microscopy, microprobe and 813C isotopic composition analysis.
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