Journal of Central South University

, Volume 25, Issue 6, pp 1489–1500 | Cite as

Petrogenesis of granite from Xiaofan Mo deposit, Dabie Orogen

  • Qing-quan Liu (刘清泉)
  • Yong-jun Shao (邵拥军)Email author
  • Ke-ping Zhou (周科平)
  • Yong-feng Li (李永峰)


The Mesozoic granitoids in the Dabie Orogen are of particular geological interest as indicators for Mesozoic lithospheric evolution because of their close association with porphyry Mo mineralization. Here, we present a study using petrogeochemistry data to constrain the petrogenesis of the Xiaofan granites in the Dabie Mo mineralization belt (DMB), Henan Province, China. Field investigations show that the Xiaofan pluton mainly consists of porphyritic granite. The Xiaofan granites have high SiO2 contents of 74.29 wt%–76.07 wt% (average: 75.18 wt%), Al2O3 contents of 11.66 wt%–12.83 wt% (average: 12.13 wt%), and K2O contents of 5.37 wt%–7.90 wt% (average: 6.86 wt%) and low MgO (0.06 wt%–0.16 wt%), TiO2 (0.09 wt%–0.10 wt%), and P2O5 (0.047 wt%–0.103 wt%) contents. They are enriched in Rb, U, K and Hf but depleted in Ba, Nb, Ta, Sr and Ti. By geochemical and mineralogical features, we propose that the Xiaofan granites belong to A-type type granite and dominantly sourced from the crust. The granites from the Xiaofan Mo deposit may have formed in a post-collision extensional setting.

Key words

granite petrogenesis Xiaofan Mo deposit Dabie Orogen 



大别造山带中生代花岗岩类岩石不仅能够提供中生代岩石圈演化信息,而且该类岩石往往与斑 岩型钼矿床的形成有着密切的联系。本文选择大别钼成矿带上肖畈钼矿床花岗岩,开展岩石地球化学 特征研究,岩相学特征表明肖畈花岗岩体属斑岩花岗岩。岩石地球化学结果显示,花岗岩具有高SiO2 含量(74.29 wt%~76.07wt%,平均值75.18 wt%),高Al2O3 含量(11.66 wt%~12.83 wt%,平均值 12.13 wt%)和高K2O 含量(5.37 wt%~7.90 wt%,平均值6.86 wt%),以及低 MgO 含量 (0.06 wt%~ 0.16 wt%),低TiO2 含量(0.09 wt%~0.10 wt%)和低P2O5 含量(0.047 wt%~0.103 wt%),岩石富集Rb, U,K 和Hf,亏损Ba,Nb,Ta,Sr 和Ti。结合岩石产出地质背景和矿物学特征,认为肖畈花岗岩属 于源于下地壳的A 型花岗岩,形成于后碰撞伸展环境。


花岗岩 岩石成因 肖畈钼矿床 大别造山带 


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Copyright information

© Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Qing-quan Liu (刘清泉)
    • 1
    • 2
  • Yong-jun Shao (邵拥军)
    • 2
    Email author
  • Ke-ping Zhou (周科平)
    • 1
  • Yong-feng Li (李永峰)
    • 3
  1. 1.School of Resources and Safety EngineeringCentral South UniversityChangshaChina
  2. 2.Key Laboratory of Metallogenic Prediction of Non-ferrous Metals and Geological Environment MonitoringMinistry of Education (School of Geosciences and Info-Physics, Central South University)ChangshaChina
  3. 3.Henan Provincial Non-Ferrous Metals Geological and Mineral Resources BureauZhengzhouChina

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