Natural monocrystalline lonsdaleite |
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| Authors: | T G Shumilova E Mayer S I Isaenko |
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| Institution: | 1.Institute of Geology, Komi Science Center, Ural Branch,Russian Academy of Sciences,Syktyvkar,Russia;2.Central Facility for Electron Microscopy,RWTH University,Aachen,Germany |
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| Abstract: | The existence of a new type of natural lonsdaleite confined to regionally metamorphosed and metasomatically modified rocks
is verified based on complex data obtained by high resolution microscopy and spectroscopy. The structural and spectroscopic
characteristics of isolated lonsdaleite particles that have a relatively large size and monocrystalline structure are given
for the first time. The results of these studies can be used not only for simulating the processes of natural diamond formation,
but also for designing superhard materials with allowance for the fact that lonsdaleite is the hardest material on Earth. |
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