Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar

Granitoid-hosted mineral deposits are major global sources of a number of economically important metals. The fundamental controls on magma metal fertility are tectonic setting, the nature of source rocks, and magma differentiation. A clearer understanding of these petrogenetic processes has been for...

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Autores principales:	Nicholas J. Gardiner, Chris J. Hawkesworth, Laurence J. Robb, Martin J. Whitehouse, Nick M. W. Roberts, Christopher L. Kirkland, Noreen J. Evans
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2b2967d7bf484684ad21bb245956576f
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spelling	oai:doaj.org-article:2b2967d7bf484684ad21bb245956576f2021-12-02T16:06:49ZContrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar10.1038/s41598-017-00832-22045-2322https://doaj.org/article/2b2967d7bf484684ad21bb245956576f2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00832-2https://doaj.org/toc/2045-2322Granitoid-hosted mineral deposits are major global sources of a number of economically important metals. The fundamental controls on magma metal fertility are tectonic setting, the nature of source rocks, and magma differentiation. A clearer understanding of these petrogenetic processes has been forged through the accessory mineral zircon, which has considerable potential in metallogenic studies. We present an integrated zircon isotope (U-Pb, Lu-Hf, O) and trace element dataset from the paired Cu-Au (copper) and Sn-W (tin) magmatic belts in Myanmar. Copper arc zircons have juvenile εHf (+7.6 to +11.5) and mantle-like δ18O (5.2–5.5‰), whereas tin belt zircons have low εHf (−7 to −13) and heavier δ18O (6.2–7.7‰). Variations in zircon Hf and U/Yb reaffirm that tin belt magmas contain greater crustal contributions than copper arc rocks. Links between whole-rock Rb/Sr and zircon Eu/Eu* highlight that the latter can monitor magma fractionation in these systems. Zircon Ce/Ce* and Eu/Eu* are sensitive to redox and fractionation respectively, and here are used to evaluate zircon sensitivity to the metallogenic affinity of their host rock. Critical contents of Sn in granitic magmas, which may be required for the development of economic tin deposits, are marked by zircon Eu/Eu* values of ca. ≤0.08.Nicholas J. GardinerChris J. HawkesworthLaurence J. RobbMartin J. WhitehouseNick M. W. RobertsChristopher L. KirklandNoreen J. EvansNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicholas J. Gardiner Chris J. Hawkesworth Laurence J. Robb Martin J. Whitehouse Nick M. W. Roberts Christopher L. Kirkland Noreen J. Evans Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar
description	Granitoid-hosted mineral deposits are major global sources of a number of economically important metals. The fundamental controls on magma metal fertility are tectonic setting, the nature of source rocks, and magma differentiation. A clearer understanding of these petrogenetic processes has been forged through the accessory mineral zircon, which has considerable potential in metallogenic studies. We present an integrated zircon isotope (U-Pb, Lu-Hf, O) and trace element dataset from the paired Cu-Au (copper) and Sn-W (tin) magmatic belts in Myanmar. Copper arc zircons have juvenile εHf (+7.6 to +11.5) and mantle-like δ18O (5.2–5.5‰), whereas tin belt zircons have low εHf (−7 to −13) and heavier δ18O (6.2–7.7‰). Variations in zircon Hf and U/Yb reaffirm that tin belt magmas contain greater crustal contributions than copper arc rocks. Links between whole-rock Rb/Sr and zircon Eu/Eu* highlight that the latter can monitor magma fractionation in these systems. Zircon Ce/Ce* and Eu/Eu* are sensitive to redox and fractionation respectively, and here are used to evaluate zircon sensitivity to the metallogenic affinity of their host rock. Critical contents of Sn in granitic magmas, which may be required for the development of economic tin deposits, are marked by zircon Eu/Eu* values of ca. ≤0.08.
format	article
author	Nicholas J. Gardiner Chris J. Hawkesworth Laurence J. Robb Martin J. Whitehouse Nick M. W. Roberts Christopher L. Kirkland Noreen J. Evans
author_facet	Nicholas J. Gardiner Chris J. Hawkesworth Laurence J. Robb Martin J. Whitehouse Nick M. W. Roberts Christopher L. Kirkland Noreen J. Evans
author_sort	Nicholas J. Gardiner
title	Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar
title_short	Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar
title_full	Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar
title_fullStr	Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar
title_full_unstemmed	Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar
title_sort	contrasting granite metallogeny through the zircon record: a case study from myanmar
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/2b2967d7bf484684ad21bb245956576f
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Contrasting Granite Metallogeny through the Zircon Record: A Case Study from Myanmar

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