Geochronological framework of the Damoqujia gold deposit, Jiaodong Peninsula, China: Implications for the timing and geologic setting of gold mineralization

2019 ◽  
Vol 55 (1) ◽  
pp. 596-613 ◽  
Author(s):  
Peng Chai ◽  
Hong‐rui Zhang ◽  
Zeng‐qian Hou ◽  
Zhi‐yu Zhang
Keyword(s):  
Gold Deposit ◽  
Gold Mineralization ◽  
Jiaodong Peninsula ◽  
Geologic Setting

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 Ore-Fluid Evolution of the Sizhuang Orogenic Gold Deposit, Jiaodong Peninsula, China

Minerals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 190 ◽  
Author(s):  
Yu-Ji Wei ◽  
Li-Qiang Yang ◽  
Jian-Qiu Feng ◽  
Hao Wang ◽  
Guang-Yao Lv ◽  
...  
Keyword(s):  
Fluid Inclusion ◽  
Gold Deposit ◽  
Late Stage ◽  
Gold Mineralization ◽  
Early Stage ◽  
Main Stage ◽  
Jiaodong Peninsula ◽  
Wide Range ◽  
Homogenization Temperatures

The Sizhuang gold deposit with a proven gold resource of >120 t, located in northwest Jiaodong Peninsula in China, lies in the southern part of the Jiaojia gold belt. Gold mineralization can be divided into altered rock type, auriferous quartz vein type, and sulfide-quartz veinlet in K-feldspar altered granite. According to mineral paragenesis and mineral crosscutting relationships, three stages of metal mineralization can be identified: early stage, main stage, and late stage. Gold mainly occurs in the main stage. The petrography and microthermometry of fluid inclusion shows three types of inclusions (type 1 H2O–CO2 inclusions, type 2 aqueous inclusions, and type 3 CO2 inclusions). Early stage quartz-hosted inclusions have a trapped temperatures range 303–390 °C. The gold-rich main stage contains a fluid-inclusion cluster with both type 1 and 2 inclusions (trapped between 279 and 298 °C), and a wide range of homogenization temperatures of CO2 occurs to the vapor phase (17.6 to 30.5 °C). The late stage calcite only contains type 1 inclusions with homogenization temperatures between 195 and 289 °C. With evidences from the H–O isotope data and the study of water–rock interaction, the metamorphic water of the Jiaodong Group is considered to be the dominating source for the ore-forming fluid. The ore-fluid belonged to a CO2–H2O–NaCl system with medium-low temperature (160–360 °C), medium-low salinity (3.00–11.83 wt% NaCl eq.), and low density (1.51–1.02 g/cm3). Fluid immiscibility caused by pressure fluctuation is the key mechanism in inducing gold mineralization in the Sizhuang gold deposit.

Hydrothermal Alteration and Gold Mineralization in the Jiaojia Gold Deposit, Jiaodong Peninsula, China

2014 ◽  
Vol 88 (s2) ◽  
pp. 835-836
Author(s):  
Binglin ZHANG ◽  
Liqiang YANG ◽  
Zhongliang WANG ◽  
Yue LIU ◽  
Rongxin ZHAO
Keyword(s):  
Gold Deposit ◽  
Hydrothermal Alteration ◽  
Gold Mineralization ◽  
Jiaodong Peninsula

scholarly journals Evolution of Pyrite Compositions at the Sizhuang Gold Deposit, Jiaodong Peninsula, Eastern China: Implications for the Genesis of Jiaodong-Type Orogenic Gold Mineralization

Minerals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 344
Author(s):  
Zhankun Liu ◽  
Xiancheng Mao ◽  
Andrew Jedemann ◽  
Richard C. Bayless ◽  
Hao Deng ◽  
...  
Keyword(s):  
Trace Elements ◽  
Phase Separation ◽  
Gold Deposit ◽  
Gold Mineralization ◽  
Structural Deformation ◽  
Fault System ◽  
Magmatic Fluid ◽  
Jiaodong Peninsula ◽  
Stage 1 ◽  
Primary Gold

Gold deposits in the Jiaodong Peninsula represent a primary gold resource in China and mostly exhibit similar ore-forming features related to sericite-quartz-pyrite alteration and other controls from (micro-)structural deformation. This study investigates the pyrite textures and trace elements in the Sizhuang gold deposit (>100 t Au) to document the key factors impacting on the genesis of the Jiaodong-type orogenic deposits. Three main types of pyrite are identified: (1) the first generation of pyrite (Py1) occurs as disseminated euhedral to subhedral grains in K-feldspar-albite-rutile-hematite and sericite alteration (stage 1), (2) Py2 as aggregates in quartz-sericite-pyrite altered rocks or quartz-pyrite veins (stage 2) can be subdivided into Py2a as irregular cores, Py2b as a zoned overgrowth on Py2a, and Py2c as overgrowth on early pyrite, and (3) Py3 as fine-grained crystals in siderite-polymetallic veins (stage 3). Primary gold at the Sizhuang deposit is coevally or slightly later deposited with Py2b, Py2c, and Py3. Laser ablation–inductively coupled plasma mass spectrometry (LA–ICP–MS) analyses show that the highest Co and Ni contents in Py1 and high but variable Co in Py2b favors the involvement of deep high-temperature magmatic waters at stage 1 and middle stage 2. The elevated As contents from Py2a to Py2c and depletion of trace elements (e.g., Co, Ni, As and Te) and high Au/Co, Cu/Ni, and As/Ni values in Py2a and Py3, combined with published H-O isotope data, imply a meteoric water ingress during stage 2–3. Thus, the fluid evolution at Sizhuang is a consequence of pulsed deep magmatic fluid release plus progressive meteoric fluid ingress. The rhythmic Co–As–Ni–Au bands of Py2b additionally suggest episodic changes in the composition of ore-forming fluids. Moreover, the sharp textural features (e.g., pyrite overgrowth on previously cataclastic crystals) of Py2 and As-Cu-rich and Co-poor bands in zoned Py2b probably also reflect rapid metal deposition and self-organization and subsequent mineral crystal growth due to the pressure release during phase separation in the Sizhuang deposit. Considering the significantly concentrated gold (>1300 t) in the regional Jiaojia fault zone and Au-bearing mineral formation related to phase separation (boiling) in the Sizhuang deposit, gold mineralization in the Sizhuang deposit was interpreted to be controlled by the pressure-driver owing to the seismic activities in the Jiaojia fault system.

Isotope Geochemistry of the Dayingezhuang Gold Deposit, Jiaodong Peninsula, China: Insights for Gold Mineralization

2014 ◽  
Vol 88 (s2) ◽  
pp. 1586-1587
Author(s):  
Liang ZHANG ◽  
Liqiang YANG ◽  
Zhongliang WANG ◽  
Linnan GUO ◽  
Yue LIU ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Gold Mineralization ◽  
Isotope Geochemistry ◽  
Jiaodong Peninsula

Study on Lognormal Distribution Characteristics of a Hydrothermal Gold Deposit Mineralization in Jiaodong Peninsula, China

2013 ◽  
Vol 803 ◽  
pp. 289-294
Author(s):  
Dian Fei Pei ◽  
Sheng Jun Miao ◽  
Guan Lin Huang ◽  
Han Chen
Keyword(s):  
Gold Deposit ◽  
Lognormal Distribution ◽  
Gold Mineralization ◽  
Economic Value ◽  
Research Area ◽  
Gold Deposits ◽  
Jiaodong Peninsula ◽  
Traditional Research ◽  
Long Time ◽  
To Come

As one of the most important type of gold deposits, hydrothermal gold deposit has become the hot research area of mineral deposits at present and for a long time to come because of its great economic value and ore-prospecting potentials. Mathematical statistics on mineralization abundance, including grade and linear productivity, of a hydrothermal gold deposit in Jiaodong Peninsula, were done. The results show that mineralization abundance of the hydrothermal gold deposit follows lognormal distribution which is consistent with traditional research findings, which have academic significance for further studies on hydrothermal gold mineralization characteristics and deposition mechanism.

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