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Chemistry of Hf-rich zircons from the Laoshan I- and A-type granites, Eastern China

Published online by Cambridge University Press:  05 July 2018

R. C. Wang ,
G. T. Zhao ,
J. J. Lu ,
X. M. Chen ,
S. J. Xu  and
D. Z. Wang
R. C. Wang*
Affiliation:
State Key Laboratory of Mineral Deposit Research and Department of Earth Sciences, Nanjing University, Nanjing 210093, P.R. China
G. T. Zhao
Affiliation:
Institute of Mineral Resources, Qingdao Ocean University, Qingdao 266003, P.R. China
J. J. Lu
Affiliation:
State Key Laboratory of Mineral Deposit Research and Department of Earth Sciences, Nanjing University, Nanjing 210093, P.R. China
X. M. Chen
Affiliation:
State Key Laboratory of Mineral Deposit Research and Department of Earth Sciences, Nanjing University, Nanjing 210093, P.R. China
S. J. Xu
Affiliation:
State Key Laboratory of Mineral Deposit Research and Department of Earth Sciences, Nanjing University, Nanjing 210093, P.R. China
D. Z. Wang
Affiliation:
State Key Laboratory of Mineral Deposit Research and Department of Earth Sciences, Nanjing University, Nanjing 210093, P.R. China
*
*E-mail: xsj98113@public1.ptt.js.cn
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Abstract

Zircon commonly occurs as one of important accessory HFSE-bearing minerals in A-type granite. A detailed electron microprobe study was carried out on zircon from the Laoshan complex, Eastern China, which is composed of I- and A-type granites. Zircon from the I-type rocks is relatively poor in trace elements (HfO2<2 wt.%, UO2, ThO2 and Y2O3 <1 wt.%), but that from the A-type rocks is richer in Hf, U, Th and Y. Hafnian zircon with a HfO2 content of up to 12.37 wt.% was found in the arfvedsonite granite, which is considered the most evolved facies in the A-type suite. Enrichment in Hf is generally observed at the rims of zircon crystals relative to the cores. The Hf enrichment in zircon, and the association of exotic REE- and HFSE-bearing minerals are linked to hydrothermal activity, suggesting that during the last stage of crystallization of the A-type magma, fluids enriched in REE, HFSE, F−, CO32− and PO43− were released.

Keywords

zirconhafniumfluid phaseA-type granite, I-type granitegranite complexLaoshanChina
Type
Research Article
Information
Mineralogical Magazine , Volume 64 , Issue 5 , October 2000 , pp. 867 - 877
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2000

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References

Belousova, E.A., Griffin, W.L. and Pearson, N.J. (1998) Trace element composition and catholuminescence properties of southern African kimberlitic zircons. Mineral. Mag., 62, 355–66.CrossRefGoogle Scholar
Černý, P. and Siivola, J. (1980) The Tanco pegmatite at Bernic Lake, Manitoba. XII. Hafnian zircon. Canad. Mineral., 18, 313–21.Google Scholar
Černý, P., Meintzer, R.E. and Anderson, A.J. (1985) Extreme fractionation in rare-element granitic pegmatites: selected examples of data and mechanisms. Canad. Mineral., 23, 381–421.Google Scholar
Correia Neves, J.M., Lopes Nunes, J.E. and Sahama, T.G. (1974) High hafnium members of the zirconhafnon series from the granite pegmatites of Zambezia, Mozambique. Contrib. Mineral. Petrol., 48, 73–80.CrossRefGoogle Scholar
Fontan, F., Monchoux, P. and Autefage, F. (1980) Présence de zircons hafnifères dans des pegmatites granitiques des Pyrénées ariègeoises; leur relation avec les niobotantalates. Bull. Mineral., 103, 88–91.Google Scholar
Heaman, L. And Parrish, R. (1991) U-Pb geochronology of accessory minerals. Pp. 59–102 in: Application of Radiogenic Isotope Systems to Problems in Geology (Heaman, L. and Ludden, J.N., editors). Mineralogical Association of Canada, Short-Course Handbook, 19.Google Scholar
King, P.L., White, A.J.R., Chappell, B.W. and Allen, C.M. (1997) Characterization and origin of aluminous A-type granites from the Lachlan Fold Belt, Southeastern Australia. J. Petrol., 38, 371–91.CrossRefGoogle Scholar
Loiselle, M.C. and Wones, D.R. (1979) Characteristics and origin of anorogenic granites. Geol. Soc. Amer., Abstracts, 11, 468.Google Scholar
Montero, P., Floor, P. and Corretgé, G. (1998) The accumulation of rare-earth and high-field-strength elements in peralkaline granitic rocks: the Galineiro orthogneissic complex, Northwestern Spain. Canad. Mineral, 36, 683–700.Google Scholar
Pupin, J.P. (1980) Zircon and granite petrology. Contrib. Mineral. Petrol, 73, 207–20.CrossRefGoogle Scholar
Pupin, J.P. (1994) Characteristics of source for migmatites and crustal anatectic granites from zircon studies. C. R. Acad. Sci. Paris, 319, 1191–97.Google Scholar
Pupin, J.P. (1995) Discordant cores in zircons and granite genesis. Third Hutton Symposium on the Origin of Granites and Related Rocks, College Park, MD. US Geol. Surv. Circular, Abstract, 1129, 118–9.Google Scholar
Raimbault, L. (1998) Composition of complex lepidolite- type granitic pegmatites and of constituent columbite-tantalite, Chèdeville, Massif Central, France. Canad. Mineral., 36, 563–83.Google Scholar
Raimbault, L., Cuney, M., Azencott, C., Duthou, J.L. and Joron, J.L. (1995) Geochemical evidence for a multistage magmatic genesis of Ta-Sn-Li mineralization in the granite at Beauvoir, French Massif Central. Econ. Geol, 90, 548–76.CrossRefGoogle Scholar
Rubin, J.N., Henry, C.D. and Price, J. G. (1989) Hydrothermal zircons and zircon overgrowths, Sierra Blanca Peaks, Texas. Amer. Mineral., 74, 865–9.Google Scholar
Speer, J.A. (1980) Zircon. Pp. 67–112 in: Orthosilicates (Ribbe, P.H., editor). Reviews in Mineralogy, 5. Mineralogical Society of America, Washington D.C. Google Scholar
Uher, P. and Černý, P. (1998) Zircon in hercynian granitic pegmatites of the western Carpathians, Slovakia. Geol. Carpathica, 49, 261–70.Google Scholar
Wang, R.C., Fontan, F. and Monchoux, P. (1992) Minéraux disséminés comme indicateurs du caractère pegmatitique du granite de Beauvoir, Massif d’Echassières, Allier, France. Canad. Mineral., 30, 763–70.Google Scholar
Wang, R.C., Fontan, F., Xu, S.J., Chen, X.M. and Monchoux, P. (1996) Hafnian zircon from the apical part of the Suzhou granite, China. Canad. Mineral., 34, 1001–10.Google Scholar
Zhao, G.T., Wang, D.Z., Cao, Q.C. and Yu, L.S. (1998) Thermal evolution and its significance of I-A type granitoid complex: The Laoshan granitoid as an example. Science in China (Series D), 41, 529–36.CrossRefGoogle Scholar