Chronological, petrologic and geochemical characteristics of Tawenchahanxi granitic diorite porphyry in East Kunlun Mountains and its metallogenic significance

YANG Tao; ZHAO Xinmin; ZHANG Zhouyuan; DU Yalong; LI Zhiming; SONG Zhongbao; ZHANG Le; ZHANG Bin; WANG Xiaopeng; JIANG Anding; ZHAN Xiaodi; WANG Yu

2017 Vol. 36, No. 7

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YANG Tao, ZHAO Xinmin, ZHANG Zhouyuan, DU Yalong, LI Zhiming, SONG Zhongbao, ZHANG Le, ZHANG Bin, WANG Xiaopeng, JIANG Anding, ZHAN Xiaodi, WANG Yu. Chronological, petrologic and geochemical characteristics of Tawenchahanxi granitic diorite porphyry in East Kunlun Mountains and its metallogenic significance[J]. Geological Bulletin of China, 2017, 36(7): 1147-1157.

Citation:

YANG Tao, ZHAO Xinmin, ZHANG Zhouyuan, DU Yalong, LI Zhiming, SONG Zhongbao, ZHANG Le, ZHANG Bin, WANG Xiaopeng, JIANG Anding, ZHAN Xiaodi, WANG Yu. Chronological, petrologic and geochemical characteristics of Tawenchahanxi granitic diorite porphyry in East Kunlun Mountains and its metallogenic significance[J]. Geological Bulletin of China, 2017, 36(7): 1147-1157.

Chronological, petrologic and geochemical characteristics of Tawenchahanxi granitic diorite porphyry in East Kunlun Mountains and its metallogenic significance

1.
Xi'an Center of China Geological Survey, Xi'an 710054, Shaanxi, China
2.
College of Earth Science and Resources, Chang'an University, Xi'an 710054, Shaanxi, China

More Information

Corresponding author: LI Zhiming, 1741838982@qq.com

Received Date: 05 October 2016

Revised Date: 09 May 2017

Publish Date: 25 July 2017

Abstract

Abstract

The Tawenchahanxi Fe-polymetallic deposit is another typical skarn type deposit newly discovered in the Qimantag metallogenic belt of East Kunlun Mountains. Using LA-ICP-MS zircon U-Pb isotope dating, the authors obtained the petrogenetic age of the granitic diorite porphyry (236.0±2.3Ma.) which is the main ore-forming rock mass in the mine. The result is in agreement with previous isochron age of 229.9±3.5Ma of the muscovite separated from skarn magnetite ore by the ⁴⁰Ar-³⁹Ar incremental heating method. Petrologic and geochemical data indicates that it is a peraluminous granite and belongs to the I type high K calc-alkaline series, enriched in LREE and HFSE but depleted in HREE and LILE. The rare earth patterns of rocks/chondrite show medium negative Eu anomalies. In addition, the diorite porphyry might have been formed at the collision-post collision stage of Late Paleozoic to Early Mesozoic tectono-magmatic cycle, which was also related to regional large-scale mantle magma underplating and crust-mantle magma mixing.
- skarn type /
- I type /
- collision-post collision stage /
- Tawenchahanxi Fe-polymetallic deposit /
- East Kunlun Mountains

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References

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