STUDY ON THE Q173 VEIN IN XIAOQINLING GOLD FIELD WITH THE METHOD OF STRUCTURE-ALTERATION-GEOCHEMISTRY PROSPECTING PREDICTION

ZHANG Huan-huan; BAI He; WANG He-ping; WEN Yue-gui; HAN Fang; YANG You-wang; MU Pei-ji

Volume 22 Issue 2

Jun. 2016

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Article Navigation > Journal of Geomechanics > 2016 > 22(2): 269-284

ZHANG Huan-huan, BAI He, WANG He-ping, et al., 2016. STUDY ON THE Q173 VEIN IN XIAOQINLING GOLD FIELD WITH THE METHOD OF STRUCTURE-ALTERATION-GEOCHEMISTRY PROSPECTING PREDICTION. Journal of Geomechanics, 22 (2): 269-284.

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STUDY ON THE Q173 VEIN IN XIAOQINLING GOLD FIELD WITH THE METHOD OF STRUCTURE-ALTERATION-GEOCHEMISTRY PROSPECTING PREDICTION

1.
Sixth Geological Team of Geological and Mineral Exploration and Development Bureau, Xi'an 710611, China
2.
Key Laboratory of Exploration and Utilization of Mineral Resources, Xi'an 710054, China
3.
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China

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Abstract

Abstract

In this paper we use the comprehensive method of structure-alteration-structural superimposed halo to research the prospecting prediction of the Q173 vein in Xiaoqinling gold field, and we come to the following understanding that the controlling fracture of the Q173 vein mainly experienced three tectonic movements. In early mineralization compressoshear structure is the dextral shear deformation, and during the mineralization stage it first experiences brittle transtensional tectonic deformation of right lateral thrust and then undergoes a composite overlay of the NE-trending extensional tectonic, and eventually forms multi-metal quartz veins. Tectonic activity is not obvious in late mineralization stage with some normal faults and no obvious superimposed mineralization enrichment. Through studying the structural ore-controlling regularity, the ore body is considered to the west side. The wall rock alteration shows that the alteration assemblage closely related to gold mineralization is pyritization-silicification-sericitization. The anomalous characteristics of the structural superimposed halo in the deep indicate that the blind ore body is present. According to the research results with the comprehensive prospecting forecast method, there exists mineralization and enrichment areas in the west of Q173 vein below 1070 m elevation that can be verified by engineering someday.
- Xiaoqinling,
- the ore controlling structure,
- the wall rock alteration,
- structural superimposed halo,
- prospecting prediction

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致谢: 在野外调查、室内研究及成文过程中得到了中国地质科学院地质力学研究所陈虹副研究员的大力支持和热情帮助、指导，在此表示衷心的感谢！

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