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Distinguishing between barren and fertile batholiths in the same porphyry-Cu district using zircon trace element geochemistry

Citation

Ahmed, AD and Cooke, DR and Agnew, P and Kobussen, A and Mills, S and Orovan, EA and Baker, MJ, Distinguishing between barren and fertile batholiths in the same porphyry-Cu district using zircon trace element geochemistry, Proceedings of the 14th SGA Biennial Meeting: Mineral Resources to Discover, 20-23 August 2017, Quebec City, Canada, pp. 1061-1064. ISBN 9782981689801 (2017) [Refereed Conference Paper]


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Abstract

Zircon trace element chemistry, particularly when combined with UPb dating of zircon, can provide crucial information on the temporal, and chemical evolution of magmatic-hydrothermal systems. Sixteen samples representing six different igneous units were analysed for 33 elements using LA-ICPMS. Zircons from the mineralised Luhr Hill intrusion have smaller negative Eu/Eu* anomalies than zircons from the post-mineralisation Shamrock intrusion. Zircons from the Shamrock intrusion show a different trace element chemistry to zircons from either preor syn-mineralisation intrusions. Zircons from the Shamrock batholith contain elevated Ho, P, U, Yb and Er. Zircons from the Yerington batholith contain elevated Dy, Tb, Y, Lu, and Yb.

Item Details

Item Type:Refereed Conference Paper
Keywords:zircon, geochemistry, porphyry, copper, fertility, Yerington
Research Division:Earth Sciences
Research Group:Geology
Research Field:Ore Deposit Petrology
Objective Division:Mineral Resources (excl. Energy Resources)
Objective Group:Mineral Exploration
Objective Field:Copper Ore Exploration
Author:Ahmed, AD (Ms Ayesha Ahmed)
Author:Cooke, DR (Professor David Cooke)
Author:Orovan, EA (Mr Evan Orovan)
Author:Baker, MJ (Dr Michael Baker)
ID Code:122937
Year Published:2017
Funding Support:Australian Research Council (IH130200004)
Deposited By:CODES ARC
Deposited On:2017-12-06
Last Modified:2017-12-07
Downloads:0

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