Rb-Sr Dating of Gold-bearing Pyrites from Wulaga Gold Deposit and its Geological Significance

2014 ◽  
Vol 64 (3) ◽  
pp. 262-270 ◽  
Author(s):  
Yongbin Wang ◽  
Qingdong Zeng ◽  
Jianming Liu
Keyword(s):  
Gold Deposit ◽  
Geological Significance ◽  
Gold Bearing

scholarly journals Re–Os Pyrite Geochronological Evidence of Three Mineralization Styles within the Jinchang Gold Deposit, Yanji–Dongning Metallogenic Belt, Northeast China

Minerals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 448 ◽  
Author(s):  
Shun-Da Li ◽  
Zhi-Gao Wang ◽  
Ke-Yong Wang ◽  
Wen-Yan Cai ◽  
Da-Wei Peng ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Northeast China ◽  
Gold Mineralization ◽  
Metallogenic Belt ◽  
Isotopic Analyses ◽  
Mantle Sources ◽  
Stage 1 ◽  
Geochronological Evidence ◽  
Gold Bearing

The Jinchang gold deposit is located in the eastern Yanji–Dongning Metallogenic Belt in Northeast China. The orebodies of the deposit are hosted within granite, diorite, and granodiorite, and are associated with gold-mineralized breccia pipes, disseminated gold in ores, and fault-controlled gold-bearing veins. Three paragenetic stages were identified: (1) early quartz–pyrite–arsenopyrite (stage 1); (2) quartz–pyrite–chalcopyrite (stage 2); and (3) late quartz–pyrite–galena–sphalerite (stage 3). Gold is hosted predominantly within pyrite. Pyrite separated from quartz–pyrite–arsenopyrite cement within the breccia-hosted ores (Py1) yield a Re–Os isochron age of 102.9 ± 2.7 Ma (MSWD = 0.17). Pyrite crystals from the quartz–pyrite–chalcopyrite veinlets (Py2) yield a Re–Os isochron age of 102.0 ± 3.4 Ma (MSWD = 0.2). Pyrite separated from quartz–pyrite–galena–sphalerite veins (Py3) yield a Re–Os isochron age of 100.9 ± 3.1 Ma (MSWD = 0.019). Re–Os isotopic analyses of the three types of auriferous pyrite suggest that gold mineralization in the Jinchang Deposit occurred at 105.6–97.8 Ma (includes uncertainty). The initial 187Os/188Os values of the pyrites range between 0.04 and 0.60, suggesting that Os in the pyrite crystals was derived from both crust and mantle sources.

REE Geochemistry of Gold-bearing Pyrite of the Miaoling Gold Deposit, Songxian County, Henan Province, China

2014 ◽  
Vol 88 (s2) ◽  
pp. 761-762
Author(s):  
Zhengyuan LI ◽  
Huishou YE ◽  
Jing CAO ◽  
Xingkang ZHANG ◽  
Wen HE ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Henan Province ◽  
Ree Geochemistry ◽  
Gold Bearing

Re-Os Dating of Molybdenites from Houshihua Gold Deposit in Wuchuan County, Inner Mongolia, and Its Geological Significance

2014 ◽  
Vol 88 (s2) ◽  
pp. 889-890 ◽  
Author(s):  
Liang WANG ◽  
Genhou WANG ◽  
Shibin LEI ◽  
Chunjiao CHANG ◽  
Liqiong JIA
Keyword(s):  
Gold Deposit ◽  
Inner Mongolia ◽  
Geological Significance

Existing forms of REE in gold-bearing pyrite of the Jinshan gold deposit, Jiangxi Province, China

2009 ◽  
Vol 27 (6) ◽  
pp. 1079-1087 ◽  
Author(s):  
Guangzhou MAO ◽  
Renmin HUA ◽  
Jianfeng GAO ◽  
Weiqiang LI ◽  
Kuidong ZHAO ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Jiangxi Province ◽  
Gold Bearing

Electromagnetic characterization of epithermal gold deposits: A case study from the Tuoniuhe gold deposit, Northeast China

Geophysics ◽  
2020 ◽  
Vol 85 (3) ◽  
pp. B49-B62 ◽  
Author(s):  
Shan Xu ◽  
Fengming Xu ◽  
Xiangyun Hu ◽  
Qun Zhu ◽  
Yuandong Zhao ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Northeast China ◽  
Depth Interval ◽  
Alteration Zone ◽  
Magnetic Survey ◽  
Depth Range ◽  
Epithermal Gold ◽  
Low Resistivity ◽  
Resistivity Model ◽  
Gold Bearing

A high-resolution electromagnetic study has helped to define the mineralization and alteration system of the Cretaceous volcano-sedimentary hosted epithermal gold (Au) deposit in Tuoniuhe, northeast China. Audio-magnetotelluric (AMT) array data were acquired to map the regional resistivity structure of the Mesozoic volcanic field, whereas an AMT profile and a ground magnetic survey line with denser site spacing were deployed across the deposit to image the alteration and mineralization system. The electrical resistivity model from 2D inversion of the AMT profile data reveals a low-resistivity (approximately [Formula: see text]) cover from the surface to a depth of 0.1 km, which is likely caused by clay and sulfide minerals in the subaerial alteration zone. The magnetic survey and a geologic borehole log assisted in outlining a zone of tonalite and andesite with silicification in the depth interval of 0.1–0.3 km, featuring high resistivity ([Formula: see text]) and high magnetization ([Formula: see text]). This zone is a potential gold target bounded by two channels of moderate resistivity (approximately [Formula: see text]) to its northwest and southeast. The two channels possibly coincide with breccia pipes with fractured stockworks and high permeability to allow gold-bearing fluids to move toward the surface. The 2D and 3D resistivity models reveal regions of low resistivity ([Formula: see text]) at the depth range of 0.5–1.0 km beneath the Cretaceous calderas and the deposit, which might be related to magmatic cryptoexplosion breccia. In the 2D resistivity model, this magmatic cryptoexplosion breccia zone connects to the subaerial alteration zone through the two breccia pipes, indicative of a circulation system of gold-bearing fluids. Given the coincidence of Cretaceous volcanism and the age of mineralization, the Cretaceous magma is inferred to have supplied heat that drove the convective hydrothermal activity and also was a source of magmatic fluids that led to the development of the Tuoniuhe epithermal gold deposit.

U-Pb SHRIMP Dating of Zircon from Quartz Veins of the Yangshan Gold Deposit in Gansu Province and Its Geological Significance

2010 ◽  
Vol 78 (2) ◽  
pp. 443-451 ◽  
Author(s):  
QI Jinzhong ◽  
YUAN Shisong ◽  
LIU Zhijie ◽  
LIU Dunyi ◽  
WANG Yanbin ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Gansu Province ◽  
Shrimp Dating ◽  
Geological Significance ◽  
Quartz Veins

Chronology and Geochemistry of the Berezitovoe Polymetallic Gold Deposit in Eastern Siberia, Russia and its Geological Significance

2017 ◽  
Vol 91 (5) ◽  
pp. 1733-1750
Author(s):  
Guobin ZHANG ◽  
Yanchen YANG ◽  
Alexander S. VAKH ◽  
Vadim G. KHOMICH ◽  
Keyong WANG ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Eastern Siberia ◽  
Geological Significance
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