EarthChemLibrary Logo Return Logo

Data DOI: 10.1594/IEDA/100540

Weiss, Y., McNeill, J., Pearson, G., Nowell, G., Ottley, C. 2015. High-density fluid microinclusions in diamonds from the Ekati mine and the Diavik Mine (Canada), Version 1.0. Interdisciplinary Earth Data Alliance (IEDA). Accessed 2020-07-06.
High-density fluid microinclusions in diamonds from the Ekati mine and the Diavik Mine (Canada)
Weiss, Y.
McNeill, J.
Pearson, G.
Nowell, G.
Ottley, C.
Eleven microinclusion-bearing fibrous diamonds from the Fox kimberlite, Ekati mine, Northwest Territories, with either coated or cubic-like morphologies were analyzed for their major and trace element and Sr isotopic compositions. High-density fluid (HDF) microinclusions of saline compositions were found in 9 of the diamonds and silicic compositions in 2 diamonds. Some of the saline diamonds encapsulate also micro-mineral inclusions of their peridotite host rock (olivine, orthopyroxene, Cr-diopside and chromite); the silicic diamonds contain microinclusions of omphacitic clinopyroxene and are related to eclogite host. Both saline and silicic HDFs are enriched in incompatible elements; they have fractionated REE patterns with elevated Ba, U, Th and LREE but depleted Nb, Ta and alkalis (K, Rb, and Cs). The fractionated nature of these patterns are more pronounced in the saline HDFs, which are also characterized with positive Eu- and Sr-anomalies versus no Eu anomaly and negative Sr anomalies in the silicic fluids. 87Sr/86Sri in the saline HDFs are 0.7039-0.7090 compared to 0.7064 and 0.7111 in the two diamonds with silicic fluids. Also provided, the trace element composition of one diamonds from the Diavik mine, Canada.
Coverage Scope: Regional (Continents, Oceans)
Geographic Location: Slave Craton, Northwest Territories, Canada
User Contributed Keyword(s):
Diamonds, High-density fluid, Saline, Silicic, Carbonatitic, Subduction

Date Available:
Date Created:
Resource Type:
File Format(s):
Data Curated by:
Download File(s):
File Name File Size
Weiss_BulkSample_Template.xls277.5 KB

Creative Commons Attribution-NonCommercial-Share Alike 3.0 United States [CC BY-NC-SA 3.0]

Related Information

Sample ID: IGSN: IEDGP0001
Sample ID: IGSN: IEDGP0002
Sample ID: IGSN: IEDGP0003
Sample ID: IGSN: IEDGP0004
Sample ID: IGSN: IEDGP0005
Sample ID: IGSN: IEDGP0006
Sample ID: IGSN: IEDGP0007
Sample ID: IGSN: IEDGP0008
Sample ID: IGSN: IEDGP0009
Sample ID: IGSN: IEDGP000A
Sample ID: IGSN: IEDGP000B
Sample ID: IGSN: IEODN0001