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Title:
Interstellar diamonds in meteorites
Authors:
Lewis, R. S.; Ming, T.; Wacker, J. F.; Anders, E.; Steel, E.
Affiliation:
AA(Chicago, University, IL), AB(Chicago, University, IL), AC(Chicago, University, IL), AD(Chicago, University, IL), AE(NBS, Center for Analytical Chemistry, Gaithersburg, MD)
Publication:
Nature (ISSN 0028-0836), vol. 326, March 12, 1987, p. 160-162. NASA-supported research. (Nature Homepage)
Publication Date:
03/1987
Category:
Lunar and Planetary Exploration; Meteorites
Origin:
STI; LPI [AN-870127%J] ttp://www.sti.nasa.gov/STI-public-homepage.html
NASA/STI Keywords:
CARBONACEOUS CHONDRITES, COSMIC DUST, COSMOCHEMISTRY, INTERSTELLAR MATTER, METEORITIC DIAMONDS, CHEMICAL COMPOSITION, ELECTRON DIFFRACTION, ELECTRON MICROSCOPY, MECHANICAL SHOCK
LPI Keywords:
METEORITES, DIAMONDS, ABUNDANCE, CARBON, SOURCE, ORIGIN, ISOTOPES, SEM, ANOMALIES, KRYPTON, XENON, NITROGEN, ENRICHMENT, DEPLETION, CHONDRITES, FORMATION, CONDENSATION, SAMPLES, METEORITE, TEM, ELECTRON MICROSCOPY, CV3 CHONDRITES, ALLENDE, CM2 CHONDRITES, MURCHISON, MURRAY, INDARCH, E4 CHONDRITES, PROCEDURE, ANALYSIS, TEM, LABORATORY STUDIES
DOI:
10.1038/326160a0
Bibliographic Code:
1987Natur.326..160L

Abstract

Primitive meteorites contain up to 400 p.p.m. of a very fine-grained type of carbon, noncommittally called Cδ. It apparently comes from outside the solar system, as it carries isotopically anomalous krypton and xenon and nitrogen, although the carbon itself is within the terrestrial range. Here the authors present evidence that part or all of Cδ is diamond - not shock-produced but primary, formed by stellar condensation as a metastable phase. It appears that interstellar dust contains diamond.
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