Imperial College London
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ProfessorJamieWilkinson

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Geology
 
 
 
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Contact

 

j.wilkinson Website

 
 
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Location

 

PA418Natural History MuseumNatural History Museum

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Loader:2020,
author = {Loader, MA and Wilkinson, JJ and Armstrong, RN},
pages = {1091--1094},
publisher = {SGA},
title = {The effect of titanite crystallisation on Eu and Ce anomalies in zircon and its implications for the assessment of porphyry Cu deposit fertility},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - The redox sensitivity of Ce and Eu anomalies in zircon has been well demonstrated by experimental studies and these parameters may represent important tools in the exploration of porphyry Cu systems which are thought to be derived from oxidised magmas. However, Ce and Eu anomalies in zircon are also affected by the co-crystallisation of REE-bearing phases such as titanite. Here, we report the trace element chemistry of zircons from titanite-bearing intrusions associated with mineralisation at the world class Oyu Tolgoi porphyry Cu-Au deposit (Mongolia). Based on these data, we suggest that neither Eu/Eu, nor Ce4+/Ce3+ are robust proxies for melt redox conditions, because they are both too strongly dependent on melt REE concentrations, which are usually poorly constrained and controlled by the crystallisation of titanite and other REE-bearing phases. In spite of this, Eu/Eu can broadly distinguish between fertile and barren systems, so may still be a useful indicator of porphyry magma fertility.
AU  - Loader,MA
AU  - Wilkinson,JJ
AU  - Armstrong,RN
EP  - 1094
PB  - SGA
PY  - 2020///
SP  - 1091
TI  - The effect of titanite crystallisation on Eu and Ce anomalies in zircon and its implications for the assessment of porphyry Cu deposit fertility
ER  -
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