Cliftonite in Meteorites: A Proposed Origin
- 12 May 1967
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 156 (3776), 819-820
- https://doi.org/10.1126/science.156.3776.819
Abstract
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 vacuumn, 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 concluision is in agreement with other recent evidence.Keywords
This publication has 14 references indexed in Scilit:
- Cohenite: its occurrence and a proposed originGeochimica et Cosmochimica Acta, 1967
- Cohenite in Meteorites: A Proposed OriginScience, 1966
- The growth of the Widmanstätten pattern in metallic meteoritesGeochimica et Cosmochimica Acta, 1965
- Electron microprobe analyses of the Widmanstätten structure of nine iron meteoritesJournal of Geophysical Research, 1965
- The cooling rates and parent planets of several iron meteoritesIcarus, 1964
- Electron microanalysis of metallic meteoritesGeochimica et Cosmochimica Acta, 1963
- The opaque minerals in stony meteoritesJournal of Geophysical Research, 1963
- The record in the meteorites—IVGeochimica et Cosmochimica Acta, 1961
- Diamonds, Meteorites, and the Origin of the Solar System.The Astrophysical Journal, 1956
- On a Meteoric Iron found in 1884 in the Sub-district of Youndegin, Western Australia, and containing Cliftonite, a cubic form of Graphitic CarbonMineralogical Magazine and Journal of the Mineralogical Society, 1887