Cliftonite in Meteorites: A Proposed Origin

Details Cliftonite in Meteorites: A Proposed Origin Cliftonite in Meteorites: A Proposed Origin

May 1967

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967sci...156..819b&link_type=abstract

Science, Volume 156, Issue 3776, pp. 819-820

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4

Scientific paper

Cliftonite, a polycrystalline aggregate of graphite with cubic morphology, is known in ten meteorites. Some workers have considered it to be a pseudomorph after diamond, and have used the proposed diamond ancestry as evidence of a meteoritic parent body of at least lunar dimensions. We have synthesized cliftonite in Fe-Ni-C alloys in vacuum, as a product of decomposition of cohenite [(Fe,Ni)3C]. We therefore suggest that a high pressure origin is unnecessary for meteorites which contain cliftonite, and that these meteorites were formed at low pressures. This conclusion is in agreement with other recent evidence.

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