Formation of the Liaoshang gold deposit, Jiaodong Peninsula, eastern China: Evidence from geochronology and geochemistry

2020 ◽  
Vol 55 (8) ◽  
pp. 5903-5913 ◽  
Author(s):  
Junjian Li ◽  
Pengpeng Zhang ◽  
Guohua Li ◽  
Wengang Liu ◽  
Zhelin Zhao ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Eastern China ◽  
Jiaodong Peninsula

Anatomy of a world-class epizonal orogenic-gold system: A holistic thermochronological analysis of the Xincheng gold deposit, Jiaodong Peninsula, eastern China

2019 ◽  
Vol 70 ◽  
pp. 50-70 ◽  
Author(s):  
Liang Zhang ◽  
Li-Qiang Yang ◽  
Roberto F. Weinberg ◽  
David I. Groves ◽  
Zhong-Liang Wang ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Eastern China ◽  
Orogenic Gold ◽  
System A ◽  
Jiaodong Peninsula ◽  
World Class

Ore geology, fluid inclusion, and stable isotope constraints on the origin of the Damoqujia gold deposit, Jiaodong Peninsula, China

2020 ◽  
Vol 57 (12) ◽  
pp. 1428-1446
Author(s):  
Peng Chai ◽  
Hong-rui Zhang ◽  
Zeng-qian Hou ◽  
Zhi-yu Zhang ◽  
Lei-lei Dong
Keyword(s):  
Fluid Inclusion ◽  
Gold Deposit ◽  
Eastern China ◽  
Homogeneous System ◽  
Gold Deposition ◽  
Medium Temperature ◽  
Rock Interaction ◽  
Jiaodong Peninsula ◽  
Primary Fluid ◽  
Gold Producer

The Damoqujia gold deposit within the Zhaoping Fault Zone on Jiaodong Peninsula in eastern China is hosted primarily by Mesozoic granitoids and contains >60 t of gold, making it an important gold producer. Three mineralization stages are distinguished (early, middle, and late): (K-feldspar)–sericite–quartz–pyrite, quartz – gold – polymetallic sulfides, and quartz–carbonate. Gold deposition occurred mainly in the middle stage. The primary fluid inclusions of three stages are mainly homogenized at temperatures of 236–389, 191–346, and 104–251 °C, with salinities of 2.96–11.33, 1.39–17.28, and 0.53–11.48 wt.% NaCl equivalent, respectively. Fluid inclusion studies indicate that the metallogenic system evolved from CO2-rich mesothermal homogeneous fluids to CO2-poor aqueous fluids due to inputs of meteoric waters. The gold was carried as a bisulfide complex in the ore-forming fluids. Precipitation of gold was caused by a combination of fluid immiscibility and water–rock interaction. Studies of the fluid inclusion characteristics (medium temperature, CO2-rich, and low salinity H2O–CO2–NaCl homogeneous system), hydrogen and oxygen isotopes ([Formula: see text] = –1.0‰ to 7.6‰, δD = –109‰ to –77‰), sulfur values ([Formula: see text] = 4.5‰ to 8.5‰), and regional geological events show that the ore-forming fluids reservoir was likely metamorphic in origin. Based on the immiscibility of fluid inclusion assemblages, the estimated depth and pressure of trapping are 8.3–10.2 km and 83–276 MPa, respectively, corresponding to the depth and pressure of mineralization.

Hydrothermal alteration of the Sizhuang gold deposit, northwestern Jiaodong Peninsula, eastern China

2019 ◽  
Vol 35 (5) ◽  
pp. 1551-1565
Author(s):  
LIU XiangDong ◽  
◽  
DENG Jun ◽  
ZHANG Liang ◽  
LIN ShaoYi ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Hydrothermal Alteration ◽  
Eastern China ◽  
Jiaodong Peninsula

Timing and mechanism of gold mineralization at the Wang'ershan gold deposit, Jiaodong Peninsula, eastern China

2017 ◽  
Vol 88 ◽  
pp. 491-510 ◽  
Author(s):  
Li-Qiang Yang ◽  
Lin-Nan Guo ◽  
Zhong-Liang Wang ◽  
Rong-Xin Zhao ◽  
Ming-Chun Song ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Gold Mineralization ◽  
Eastern China ◽  
Jiaodong Peninsula

scholarly journals Geostatistical Determination of Ore Shoot Plunge and Structural Control of the Sizhuang World-Class Epizonal Orogenic Gold Deposit, Jiaodong Peninsula, China

Minerals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 214 ◽  
Author(s):  
Si-Rui Wang ◽  
Li-Qiang Yang ◽  
Jian-Gang Wang ◽  
En-Jing Wang ◽  
Yong-Lin Xu
Keyword(s):  
Gold Deposit ◽  
Structural Control ◽  
Large Scale ◽  
Early Stage ◽  
Eastern China ◽  
Mining Area ◽  
Orogenic Gold ◽  
Forming Process ◽  
Jiaodong Peninsula ◽  
Variogram Modeling

The Jiaodong Peninsula in eastern China is the third largest gold-mining area and one of the most important orogenic gold provinces in the world. Ore shoots plunging in specific orientations are a ubiquitous feature of the Jiaodong lode deposits. The Sizhuang gold deposit, located in northwestern Jiaodong, is characterized by orebodies of different occurrences. The orientation of ore shoots has remained unresolved for a long time. In this paper, geostatistical tools were used to determine the plunge and structural control of ore shoots in the Sizhuang deposit. The ellipses determined by variogram modeling reveal the anisotropy of mineralization, plus the shape, size, and orientation of individual ore shoots. The long axes of the anisotropy ellipses trend NE or SEE and plunge 48° NE down the dip. However, individual ore shoots plunge almost perpendicular to the plunge of the ore deposit as a whole. This geometry is interpreted to have resulted from two periods of fluid flow parallel to two sets of striations that we identified on ore-controlling faults. Thrust-related lineations with a sinistral strike-slip component were associated with early-stage mineralization. This was overprinted by dextral and normal movement of the ore-controlling fault that controlled the late-stage mineralization. This kinematic switch caused a change in the upflow direction of ore-forming fluid, which in turn controlled the orientation of the large-scale orebodies and the subvertical plunge of individual ore shoots. Thus, a regional transition from NW-to-SE-trending compression to NW-to-SE-trending extension is interpreted as the geodynamic background of the ore-forming process. This research exemplifies an effective exploration strategy for studying the structural control of the geometry, orientation, and grade distribution of orebodies via the integration of geostatistical tools and structural analysis.

Fluid evolution in the Rushan lode gold deposit of Jiaodong Peninsula, eastern China

2006 ◽  
Vol 89 (1-3) ◽  
pp. 161-164 ◽  
Author(s):  
Fang-Fang Hu ◽  
Hong-Rui Fan ◽  
Ming-Guo Zhai ◽  
Cheng-Wei Jin
Keyword(s):  
Gold Deposit ◽  
Eastern China ◽  
Lode Gold ◽  
Fluid Evolution ◽  
Jiaodong Peninsula ◽  
Lode Gold Deposit
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