Diamonds in ureilites

• Autorzy: Jakubowski T. , Karczemska A. , Kozanecki M.
• Języki publikacji: EN

Abstrakty

EN

The presence of diamonds in meteorites was confirmed for the first time in the Novo-Ureiureilite in 1888. Ureilites are a rare class of achondrites, often referred to as primitive achondrites. They are composed of olivine and pyroxene (pygeonite), as well as graphite inclusions often coexisting with diamonds. The following three main hypotheses of diamond origin in ureilites have been proposed: the HPHT process, graphite-to-diamond conversion under shock compression due to impact on the parent body (the most popular theory, as of the time of publication), and the CVD process in the solar nebula. The samples of all types of ureilites, from less shocked up to highly shocked, were examined using Raman Spectroscopy and Scanning Electron Microscopy. The results show the presence of diamonds in all of our samples. Of particular significance is the comparison of Raman spectra of diamonds and graphite phases of different ureilites.

Słowa kluczowe

EN

diamond properties and applications; diamond; meteorite; ureilite

PL

właściwości diamentu i aplikacje; diament; meteoryt; spektroskopia Ramana

• Wydawca: Polish Meteorite Society ; Wrocław University of Science and Technology
• Czasopismo: Meteorites
• Rocznik: 2011
• Tom: Vol. 0, No. 0
• Strony: 3--8
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Jakubowski T.

autor

Karczemska A.

autor

Kozanecki M.

• Technical University of Łódź, Institute of Materials Science and Engineering, ul. Stefanowskiego 1/15, Łódź, Poland

Bibliografia

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