Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia
We have performed petrographic and spectroscopic studies of brown diamonds from an eclogite xenolith from the Udachnaya pipe (Yakutia, Russia). Brown diamonds are randomly intermixed with colorless ones in the rock and often located at the grain boundaries of clinopyroxene and garnet. Brown diamonds...
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ftunivtasecite:oai:ecite.utas.edu.au:95748 2023-05-15T18:44:55+02:00 Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia Stepanov, AS Korsakov, AV Yuryeva, OP Nadolinniy, VA Perraki, M De Gussem, K Vandenabeele, P 2011 https://doi.org/10.1016/j.saa.2011.01.006 http://www.ncbi.nlm.nih.gov/pubmed/21324732 http://ecite.utas.edu.au/95748 en eng Pergamon-Elsevier Science Ltd http://dx.doi.org/10.1016/j.saa.2011.01.006 Stepanov, AS and Korsakov, AV and Yuryeva, OP and Nadolinniy, VA and Perraki, M and De Gussem, K and Vandenabeele, P, Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 80, (1) pp. 41-48. ISSN 1386-1425 (2011) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/21324732 http://ecite.utas.edu.au/95748 Earth Sciences Geochemistry Inorganic Geochemistry Refereed Article PeerReviewed 2011 ftunivtasecite https://doi.org/10.1016/j.saa.2011.01.006 2019-12-13T21:58:10Z We have performed petrographic and spectroscopic studies of brown diamonds from an eclogite xenolith from the Udachnaya pipe (Yakutia, Russia). Brown diamonds are randomly intermixed with colorless ones in the rock and often located at the grain boundaries of clinopyroxene and garnet. Brown diamonds can be characterized by a set of defects (H4, N2D and a line at 490.7 nm) which are absent in colorless diamonds. This set of defects is typical for plastically deformed diamonds and indicates that diamonds were likely annealed for a relatively short period after deformation had occurred. Excitation of brown colored zones with a 632.8 nm HeNe laser produced the typical diamond band plus two additional bands at 1730 cm −1 and 3350 cm −1 . These spectral features are not genuine Raman bands, and can be attributed to photoluminescence at ∼710 nm (1.75 eV) and ∼802 nm (1.54 eV). No Raman peak corresponding to graphite was observed in regions of brown coloration. Comparison with previous reports of brown diamonds from eclogites showed our eclogitic sample to have a typical structure without signs of apparent deformation. Two mechanisms with regard to diamond deformation are proposed: deformation of eclogite by external forces followed by subsequent recrystallization of silicates or, alternatively, deformation by local stress arising due to decompression and expansion of silicates during ascent of the xenolith to surface conditions. Article in Journal/Newspaper Yakutia eCite UTAS (University of Tasmania) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 80 1 41 48 |
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English |
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Earth Sciences Geochemistry Inorganic Geochemistry |
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Earth Sciences Geochemistry Inorganic Geochemistry Stepanov, AS Korsakov, AV Yuryeva, OP Nadolinniy, VA Perraki, M De Gussem, K Vandenabeele, P Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia |
topic_facet |
Earth Sciences Geochemistry Inorganic Geochemistry |
description |
We have performed petrographic and spectroscopic studies of brown diamonds from an eclogite xenolith from the Udachnaya pipe (Yakutia, Russia). Brown diamonds are randomly intermixed with colorless ones in the rock and often located at the grain boundaries of clinopyroxene and garnet. Brown diamonds can be characterized by a set of defects (H4, N2D and a line at 490.7 nm) which are absent in colorless diamonds. This set of defects is typical for plastically deformed diamonds and indicates that diamonds were likely annealed for a relatively short period after deformation had occurred. Excitation of brown colored zones with a 632.8 nm HeNe laser produced the typical diamond band plus two additional bands at 1730 cm −1 and 3350 cm −1 . These spectral features are not genuine Raman bands, and can be attributed to photoluminescence at ∼710 nm (1.75 eV) and ∼802 nm (1.54 eV). No Raman peak corresponding to graphite was observed in regions of brown coloration. Comparison with previous reports of brown diamonds from eclogites showed our eclogitic sample to have a typical structure without signs of apparent deformation. Two mechanisms with regard to diamond deformation are proposed: deformation of eclogite by external forces followed by subsequent recrystallization of silicates or, alternatively, deformation by local stress arising due to decompression and expansion of silicates during ascent of the xenolith to surface conditions. |
format |
Article in Journal/Newspaper |
author |
Stepanov, AS Korsakov, AV Yuryeva, OP Nadolinniy, VA Perraki, M De Gussem, K Vandenabeele, P |
author_facet |
Stepanov, AS Korsakov, AV Yuryeva, OP Nadolinniy, VA Perraki, M De Gussem, K Vandenabeele, P |
author_sort |
Stepanov, AS |
title |
Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia |
title_short |
Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia |
title_full |
Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia |
title_fullStr |
Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia |
title_full_unstemmed |
Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia |
title_sort |
brown diamonds from an eclogite xenolith from udachnaya kimberlite, yakutia, russia |
publisher |
Pergamon-Elsevier Science Ltd |
publishDate |
2011 |
url |
https://doi.org/10.1016/j.saa.2011.01.006 http://www.ncbi.nlm.nih.gov/pubmed/21324732 http://ecite.utas.edu.au/95748 |
genre |
Yakutia |
genre_facet |
Yakutia |
op_relation |
http://dx.doi.org/10.1016/j.saa.2011.01.006 Stepanov, AS and Korsakov, AV and Yuryeva, OP and Nadolinniy, VA and Perraki, M and De Gussem, K and Vandenabeele, P, Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 80, (1) pp. 41-48. ISSN 1386-1425 (2011) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/21324732 http://ecite.utas.edu.au/95748 |
op_doi |
https://doi.org/10.1016/j.saa.2011.01.006 |
container_title |
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy |
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80 |
container_issue |
1 |
container_start_page |
41 |
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48 |
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1766235791985475584 |