Molybdenite Re-Os dating of the Tugurige gold deposit, Urad Middle Banner, Inner Mongolia, and its geological significance

ZHANG Feng; LI Zhi-dan; WANG Jia-ying; CHEN Jun-qiang; WEN Si-bo; LI Chao; SHAO Guo-yu; ZHAO Yu-chuan; YU Reng-an

doi:10.12029/gc20160525

2016 Vol. 43, No. 5

Article Contents

Article navigation > Geology in China > 2016 > (5): 1771-1779

Next Article Previous Article

ZHANG Feng, LI Zhi-dan, WANG Jia-ying, CHEN Jun-qiang, WEN Si-bo, LI Chao, SHAO Guo-yu, ZHAO Yu-chuan, YU Reng-an. Molybdenite Re-Os dating of the Tugurige gold deposit, Urad Middle Banner, Inner Mongolia, and its geological significance[J]. Geology in China, 2016, (5): 1771-1779. doi: 10.12029/gc20160525

Citation:

ZHANG Feng, LI Zhi-dan, WANG Jia-ying, CHEN Jun-qiang, WEN Si-bo, LI Chao, SHAO Guo-yu, ZHAO Yu-chuan, YU Reng-an. Molybdenite Re-Os dating of the Tugurige gold deposit, Urad Middle Banner, Inner Mongolia, and its geological significance[J]. Geology in China, 2016, (5): 1771-1779. doi: 10.12029/gc20160525

Molybdenite Re-Os dating of the Tugurige gold deposit, Urad Middle Banner, Inner Mongolia, and its geological significance

1.
Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China
2.
National Research Center of Geoanalysis, Beijing 100037, China
3.
No. 208 Geological Party, CNNC, Baotou 014010, Inner Mongolia, China

Received Date: 16 July 2015

Revised Date: 13 November 2015

Publish Date: 24 October 2016

Abstract

Abstract

Tugurige is a middle-sized gold deposit in Buyant Block, Inner Mongolia. The NW-striking gold-bearing quartz veins penetrate the Late Paleozoic rock mass and Lower Proterozoic Buyant Group. The orebody stably extends along the strike and the dip. The metallic minerals mainly include pyrite, chalcopyrite and galena, whereas the gangue minerals are predominately quartz and calcite. The alteration in the wall rocks includes silicification, sericitization and epidotization. The Re-Os dating of molybdenite samples from gold ore yielded a Re-Os isochron age of (305.6±4.5) Ma with an average of (313.5±4.8) Ma. This implies that the Au and Mo mineralization occurred in Late Carboniferous. The Re content of molybdenites in the Tugurige gold deposit is 42.42×10-6-307.7×10-6, suggesting that the ore-forming material was derived mainly from a mixed source of crust and mantle.
- Re-Os isotopes /
- metallogenic ages /
- Tugurige gold deposit /
- Urad Middle Banner /
- Inner Mongolia