SHRIMP zircon U-Pb age of the fine-grained monzonitic granite in the Wulandele molybdenum-copper polymetallic ore deposit of Inner Mongolia and its significance

TAO Jixiong; WANG Tao; CHEN Zhenghui; TAHG Wei; WANG Renfei

2017 Vol. 36, No. 9

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TAO Jixiong, WANG Tao, CHEN Zhenghui, TAHG Wei, WANG Renfei. SHRIMP zircon U-Pb age of the fine-grained monzonitic granite in the Wulandele molybdenum-copper polymetallic ore deposit of Inner Mongolia and its significance[J]. Geological Bulletin of China, 2017, 36(9): 1525-1530.

Citation:

TAO Jixiong, WANG Tao, CHEN Zhenghui, TAHG Wei, WANG Renfei. SHRIMP zircon U-Pb age of the fine-grained monzonitic granite in the Wulandele molybdenum-copper polymetallic ore deposit of Inner Mongolia and its significance[J]. Geological Bulletin of China, 2017, 36(9): 1525-1530.

SHRIMP zircon U-Pb age of the fine-grained monzonitic granite in the Wulandele molybdenum-copper polymetallic ore deposit of Inner Mongolia and its significance

1.
Inner Mongolia Mining Exploitation Co., Ltd., Hohhot 010020, Inner Mongolia, China
2.
Inner Mongolia Geological Survey, Hohhot 010020, Inner Mongolia, China
3.
Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China

Received Date: 12 June 2016

Revised Date: 23 February 2017

Publish Date: 25 September 2017

Abstract

Abstract

The Wulandele molybdenum-copper polymetallic deposit in Sonid Left Banner of Inner Mongolia is a large deposit dis-covered recently during the geological survey in the Erlian-Dong Ujimqin Banner metallogenic belt of Inner Mongolia. Ore geology characteristics show that the formation of the molybdenum-copper polymetallic deposit had spatial-temporal and genetic relation-ships with the concealed fine-grained monzonitic granite in this area. In order to reveal the metallogenic regularity in this area, the authors determined the SHRIMP single particle zircon U-Pb age of the fine-grained monzonitic granite. The results show that the weighted average ²⁰⁶Pb/²³⁸U age of 131.3±1.6Ma(MSWD=1.7)is consistent with the molybdenite Re-Os age of 134.1±3.3Ma, sug-gesting that the formation age was Early Cretaceous. The result of geological exploration shows that the formation of the deposit was closely related to the concealed Yanshanian fine-grained monzonitic granite. The result of isotopic dating is important for the study of the regularity of ore formation.
- molybdenum-copper /
- SHRIMP zircon U-Pb age /
- Wulandele /
- Sino-Mongolian border

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References

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