Ultrahigh-pressure metamorphism : 25 years after the discovery of coesite and diamond

0360821 - GLÚ 2012 RIV NL eng M - Část monografie knihy
Naemura, K. - Ikuta, D. - Kagi, H. - Odake, S. - Ueda, T. - Ohi, S. - Kobayashi, T. - Svojtka, Martin - Hirajima, T.
Diamond and Other Possible Ultradeep Evidence Discovered in the Orogenic Spinel-Garnet Peridotite from the Moldanubian Zone of the Bohemian Massif, Czech Republic.
Ultrahigh-pressure metamorphism : 25 years after the discovery of coesite and diamond. Amsterdam ; Boston: Elsevier, 2011 - (Dobrzhinetskaya, L.; Faryad, S.; Wallis, S.), s. 77-111. ISBN 978-0-12-385144-4
Výzkumný záměr: CEZ:AV0Z30130516
Klíčová slova: peridotite * diamond * Bohemian Massif
Kód oboru RIV: DB - Geologie a mineralogie

Several pieces of mineralogical evidence suggesting precursor ultra-deep conditions (~ 6 GPa) have been newly identified from a spinel-garnet peridotite at Plešovice, occurring as a lenticular body in the Gföhl granulite of the Bohemian Massif, Czech Republic. The first data set suggesting the precursor ultra-deep conditions are carbon phases, including a micro-diamond grain obtained by the mineral separation process and various graphitic carbons. Synchrotron X-ray fluorescence analysis indicates that this diamond contains Fe-Ni metal (taenite structure) and Cu-Zn-rich phases (possibly sulfide) as inclusion. In particular, the latter phase supports the natural origin of this diamond, although the aggregation state of nitrogen in the diamond is very similar to the synthetic one.
Trvalý link: http://hdl.handle.net/11104/0198282