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- 2Stachel, Thomas
- 2Stern, Richard A.
- 1Cartigny, Pierre
- 1Creighton, Steven
- 1Hogberg, Katie
- 1Howell, Daniel
- 11Graduate Studies and Research, Faculty of
- 11Graduate Studies and Research, Faculty of/Theses and Dissertations
- 1Canadian Centre for Isotopic Microanalysis (CCIM)
- 1Canadian Centre for Isotopic Microanalysis (CCIM)/Laboratory Research and Technical Material (CCIM)
- 1Earth and Atmospheric Sciences, Department of
- 1Earth and Atmospheric Sciences, Department of/Journal Articles (Earth and Atmospheric Sciences)
Age, origin and composition of the Attawapiskat lithospheric mantle and its diamonds (western Superior craton, Canada)Download
This study reports results from peridotitic and eclogitic xenoliths and di- amond samples from the Attawapiskat area to understand the processes of craton formation and modification in the Superior lithospheric mantle. These diamondiferous kimberlites also provide an opportunity to study the...
Biogenic and Abiotic Carbonates in Altered Oceanic Crust (AOC) and Implications to Subduction Zone Carbon CycleDownload
Altered oceanic crust (AOC) is an important carbon reservoir for subduction-zone carbon recycling. However, the character of the carbon reservoir (e.g., total budget and isotopic signatures) in AOC has not been well constrained. Here, based on analyses of contents and isotope compositions of 73...
Carbon and nitrogen isotope systematics in diamond: Different sensitivities to isotopic fractionation or a decoupled origin?Download
Using stable isotope data obtained on multiple aliquots of diamonds from worldwide sources, it has been argued that carbon and nitrogen in diamond are decoupled. Here we re-investigate the carbon–nitrogen relationship based on the most comprehensive microbeam data set to date of stable isotopes...
The Renard kimberlites (52°48’26N, 72°14’52W: Quebec, Canada) are typical for primary diamond deposits: being located within Archean basement (Superior craton). Pb-Pb isotope data of clinopyroxenes also suggests an Archean age (~2.7Ga) for the subcratonic lithospheric mantle (SCLM). The Carolina...
Diamond sources beneath the Hall Peninsula, Baffin Island, Nunavut: A preliminary assessment based on Chidliak diamondsDownload
Diamonds from the Chidliak kimberlite field, located on the Hall Peninsula of Baffin Island, are the focus of this study. Morphology, carbon and nitrogen isotopic compositions, and nitrogen characteristics of Chidliak diamonds are used to constrain diamond sources, and conditions of diamond...
Monocrystalline gem-quality diamonds from Akwatia, Ghana and De Beers Pool, South Africa have trace-element concentrations ranging from ppt to ppm levels, but mostly are below the limit of quantification. CeN/EuN (1–6; N = chondrite normalized) and CeN/TiN (0.6 to 12) indicate mildly elevated...
Different laser ablation and mass spectrometry techniques and FTIR spectroscopy have been used to investigate elemental impurities, defects, and stable and radiogenic isotope compositions in natural diamond and ruby, with the aim of expanding previous research into diamond and ruby genesis,...
This report describes the methods and samples utilized (to 2014) within the Canadian Centre for Isotopic Microanalysis (CCIM), University of Alberta, for routine analysis of δ13CVPDB, δ15NAIR, and N abundances of diamonds by secondary ion mass spectrometry (Cameca IMS 1280). Analyses by...
Rockbursts have been a hazard for mining operations since underground mining first came into practice; the consequences they present to mining personnel and machinery can be fatal and costly. Underground mining in Northern Canada has presented the opportunity to study the bursting properties of...
Gahcho Kué is a diamond mine in the Northwest Territories of Canada that opened in 2016. This is the first study into the morphology, N systematics, and stable isotope (C and N) composition of the Gahcho Kué diamonds, and the mineral chemistry of the associated inclusions. The resulting data are...