date: 2017-10-24T09:18:55Z pdf:PDFVersion: 1.5 pdf:docinfo:title: The Carbon and Nitrogen Isotope Characteristics of Type Ib-IaA Cuboid Diamonds from Alluvial Placers in the Northeastern Siberian Platform xmp:CreatorTool: LaTeX with hyperref package access_permission:can_print_degraded: true subject: Cuboid diamonds are particularly common in the placers of the northeastern Siberian platform, but their origin remains unclear. These crystals usually range in color from dark yellow to orange and, more interestingly, are characterized by unusual low aggregated nitrogen impurities (non-aggregated C-center), suggesting a short residence time and/or low temperatures at which they have been stored in the mantle. In order to track possible isotopic signature that could help deciphering cuboid diamond?s crystallization processes, 13C values, 15N values, and nitrogen concentrations have been determined in situ in three samples using secondary ion mass spectrometry (SIMS), whereas nitrogen aggregation states have been determined by FTIR spectroscopy. The samples fall out of the 13C vs. 15N field of canonical mantle composition. Different scales of carbon and nitrogen fractionation may produce the observed variations. Alternatively, mixing mantle and crustal material would obscure initial co-variations of 13C values with 15N or nitrogen content. dc:format: application/pdf; version=1.5 pdf:docinfo:creator_tool: LaTeX with hyperref package access_permission:fill_in_form: true pdf:encrypted: false dc:title: The Carbon and Nitrogen Isotope Characteristics of Type Ib-IaA Cuboid Diamonds from Alluvial Placers in the Northeastern Siberian Platform modified: 2017-10-24T09:18:55Z cp:subject: Cuboid diamonds are particularly common in the placers of the northeastern Siberian platform, but their origin remains unclear. These crystals usually range in color from dark yellow to orange and, more interestingly, are characterized by unusual low aggregated nitrogen impurities (non-aggregated C-center), suggesting a short residence time and/or low temperatures at which they have been stored in the mantle. In order to track possible isotopic signature that could help deciphering cuboid diamond?s crystallization processes, 13C values, 15N values, and nitrogen concentrations have been determined in situ in three samples using secondary ion mass spectrometry (SIMS), whereas nitrogen aggregation states have been determined by FTIR spectroscopy. The samples fall out of the 13C vs. 15N field of canonical mantle composition. Different scales of carbon and nitrogen fractionation may produce the observed variations. Alternatively, mixing mantle and crustal material would obscure initial co-variations of 13C values with 15N or nitrogen content. pdf:docinfo:subject: Cuboid diamonds are particularly common in the placers of the northeastern Siberian platform, but their origin remains unclear. These crystals usually range in color from dark yellow to orange and, more interestingly, are characterized by unusual low aggregated nitrogen impurities (non-aggregated C-center), suggesting a short residence time and/or low temperatures at which they have been stored in the mantle. In order to track possible isotopic signature that could help deciphering cuboid diamond?s crystallization processes, 13C values, 15N values, and nitrogen concentrations have been determined in situ in three samples using secondary ion mass spectrometry (SIMS), whereas nitrogen aggregation states have been determined by FTIR spectroscopy. The samples fall out of the 13C vs. 15N field of canonical mantle composition. Different scales of carbon and nitrogen fractionation may produce the observed variations. Alternatively, mixing mantle and crustal material would obscure initial co-variations of 13C values with 15N or nitrogen content. pdf:docinfo:creator: Dmitry Zedgenizov, Vadim Reutsky and Michael Wiedenbeck PTEX.Fullbanner: This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016/W32TeX) kpathsea version 6.2.2 meta:author: Dmitry Zedgenizov, Vadim Reutsky and Michael Wiedenbeck trapped: False meta:creation-date: 2017-09-28T00:14:02Z created: Thu Sep 28 02:14:02 CEST 2017 access_permission:extract_for_accessibility: true Creation-Date: 2017-09-28T00:14:02Z Author: Dmitry Zedgenizov, Vadim Reutsky and Michael Wiedenbeck producer: pdfTeX-1.40.17 pdf:docinfo:producer: pdfTeX-1.40.17 dc:description: Cuboid diamonds are particularly common in the placers of the northeastern Siberian platform, but their origin remains unclear. These crystals usually range in color from dark yellow to orange and, more interestingly, are characterized by unusual low aggregated nitrogen impurities (non-aggregated C-center), suggesting a short residence time and/or low temperatures at which they have been stored in the mantle. In order to track possible isotopic signature that could help deciphering cuboid diamond?s crystallization processes, 13C values, 15N values, and nitrogen concentrations have been determined in situ in three samples using secondary ion mass spectrometry (SIMS), whereas nitrogen aggregation states have been determined by FTIR spectroscopy. The samples fall out of the 13C vs. 15N field of canonical mantle composition. Different scales of carbon and nitrogen fractionation may produce the observed variations. Alternatively, mixing mantle and crustal material would obscure initial co-variations of 13C values with 15N or nitrogen content. Keywords: cuboid diamond; carbon; nitrogen; SIMS access_permission:modify_annotations: true dc:creator: Dmitry Zedgenizov, Vadim Reutsky and Michael Wiedenbeck description: Cuboid diamonds are particularly common in the placers of the northeastern Siberian platform, but their origin remains unclear. These crystals usually range in color from dark yellow to orange and, more interestingly, are characterized by unusual low aggregated nitrogen impurities (non-aggregated C-center), suggesting a short residence time and/or low temperatures at which they have been stored in the mantle. In order to track possible isotopic signature that could help deciphering cuboid diamond?s crystallization processes, 13C values, 15N values, and nitrogen concentrations have been determined in situ in three samples using secondary ion mass spectrometry (SIMS), whereas nitrogen aggregation states have been determined by FTIR spectroscopy. The samples fall out of the 13C vs. 15N field of canonical mantle composition. Different scales of carbon and nitrogen fractionation may produce the observed variations. Alternatively, mixing mantle and crustal material would obscure initial co-variations of 13C values with 15N or nitrogen content. dcterms:created: 2017-09-28T00:14:02Z Last-Modified: 2017-10-24T09:18:55Z dcterms:modified: 2017-10-24T09:18:55Z title: The Carbon and Nitrogen Isotope Characteristics of Type Ib-IaA Cuboid Diamonds from Alluvial Placers in the Northeastern Siberian Platform xmpMM:DocumentID: uuid:e26a8969-492a-4bf2-96a2-4188e4b982c5 Last-Save-Date: 2017-10-24T09:18:55Z pdf:docinfo:keywords: cuboid diamond; carbon; nitrogen; SIMS pdf:docinfo:modified: 2017-10-24T09:18:55Z meta:save-date: 2017-10-24T09:18:55Z pdf:docinfo:custom:PTEX.Fullbanner: This is pdfTeX, Version 3.14159265-2.6-1.40.17 (TeX Live 2016/W32TeX) kpathsea version 6.2.2 Content-Type: application/pdf X-Parsed-By: org.apache.tika.parser.DefaultParser creator: Dmitry Zedgenizov, Vadim Reutsky and Michael Wiedenbeck dc:subject: cuboid diamond; carbon; nitrogen; SIMS access_permission:assemble_document: true xmpTPg:NPages: 10 access_permission:extract_content: true access_permission:can_print: true pdf:docinfo:trapped: False meta:keyword: cuboid diamond; carbon; nitrogen; SIMS access_permission:can_modify: true pdf:docinfo:created: 2017-09-28T00:14:02Z