Formation of the Majiayao gold deposit, Jiaodong Peninsula, eastern China: Constraints from fluid inclusions, H–O–S–Pb isotopes, and pyrite Rb–Sr age

2019 ◽  
Vol 55 (8) ◽  
pp. 5885-5902
Author(s):  
Jiepeng Tian ◽  
Junjian Li ◽  
Pengpeng Zhang ◽  
Xiuzhang Li ◽  
Wengang Liu ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Fluid Inclusions ◽  
Eastern China ◽  
Pb Isotopes ◽  
Jiaodong Peninsula

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
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