Temporal and spatial relationships of granitic magmatism and W mineralization: Insights from the Xingguo orefield, South China

Zhao, Zheng; Liu, Chang; Naxin, Guo; Zhao, Wenqian; Wang, Pingan; Chen, Zhenghui

doi:10.1016/j.oregeorev.2018.03.022

Cited by 21 publications

(4 citation statements)

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“…The porphyritic biotite granite (with porphyritic texture, coarse grained phenocrysts, medium fine grained matrix), fine grained biotite granite, and biotite granite porphyry (with porphyritic texture, medium fine phenocrysts and aphanitic matrix), which successively intruded in the middle Yanshan period, have a regularly refined particle size. This shows that their formation depth becomes shallower and their invasion time later, in turn [30]. The Yanshanian porphyritic biotite granite is a W-Cu ore-forming rock body, while Jinningian biotite granodiorite is the main ore hosting body (Figure 3).…”

Section: Deposit Geologymentioning

confidence: 95%

“…After undergoing magmatic-sedimentary-metamorphic-tectonic-metallogenic events as well the Indosinian tectonic movement, the belt was transformed to a continent. During the Yanshanian tectonic movement, due to intraplate contraction and the interaction of the Kula-Pacific Ocean Plates with the neighboring plates, strong continental orogeny occurred in the region, and brought about an NE-NEE-dominated strike slip thrust extensional structure [30,31], which was superimposed and compounded with the ancient structure, bringing up rich nonferrous, rare and precious metal minerals (Figure 1).…”

Section: Regional Geological Backgroundmentioning

confidence: 99%

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Characteristics and Mechanism of the Ore-Forming Fluids in the Shimensi Tungsten Polymetallic Deposit in Southeastern China

Wang,

Ye,

Zong

2024

Minerals

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The Shimensi super-large tungsten polymetallic deposit is located in the Late Jurassic–Early Cretaceous Porphyry–Skarn tungsten ore belt in the south Yangtze metallogenic belt. There are three types of mineralization: veinlet-disseminated type, thick quartz vein type and hydrothermal cryptoexplosive breccia type. Based on geological studies, this paper presents new petrographic, microthermometric, laser Raman spectroscopic and hydrogen and oxygen isotope research on the fluid inclusions from the deposit. The results show that there are five different types of fluid inclusions: liquid-rich inclusions, vapor-rich inclusions, pure liquid inclusions, pure vapor inclusions, and fluid inclusions containing a solid crystal. The homogenization temperatures of the fluid inclusion range from 140 °C to 270 °C, the salinities are 3 wt.%–5 wt.% NaCleq and the densities of ore-forming fluid range from 0.64 g/cm3 to 0.99 g/cm3. For the analyses of laser Raman spectroscopy, the ore-forming fluids can be approximated by a Ca2+-Na+-SO42−-Cl− fluid system with small amounts of CO2, CH4 and N2. Otherwise, the data of the pressure, pH and Eh show a fluid metallogenic environment of low pressure, weak acid and weak reduction. The values of the homogenization temperature in the three types of orebodies suggest that the mineralization is characterized by a decrease in temperature under the conditions of fluid immiscibility. The H-O isotope values are interpreted to indicate that the ore-forming fluids are mainly composed of magmatic water, and meteoric water is added with the process of magma rising.

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Section: Deposit Geologymentioning

confidence: 95%

Section: Regional Geological Backgroundmentioning

confidence: 99%

Characteristics and Mechanism of the Ore-Forming Fluids in the Shimensi Tungsten Polymetallic Deposit in Southeastern China

Wang,

Ye,

Zong

2024

Minerals

View full text Add to dashboard Cite

show abstract

“…After undergoing magmaticsedimentary-metamorphic-tectonic-metallogenic events as well the Indosinian tectonic movement, the belt was transformed to a continent. During the Yanshanian Tectonic Movement, due to intraplate contraction and the interaction of the Kula-Pacific Ocean Plates with the neighboring plates, strong continental orogeny occurred in the region, and brought about an NE-NEE-dominated strike slip thrust extensional structure [28,29], which was superimposed and compounded with the ancient structure, bringing up rich nonferrous, rare and precious metal minerals(Figure 1).…”

Section: Regional Geological Backgroundmentioning

confidence: 99%

Characteristics and Mechanism of the Ore-Forming Fluids in the Shimensi Tungsten Polymetallic Deposit in Southeastern China

Wang,

Ye,

Zong

2024

Preprint

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The Shimensi super-large tungsten polymetallic deposit is located in Late Jurassic- Early Cretaceous Porphyry-Skarn tungsten ore belt in the south Yangtze metallogenic belt. There are 3 types of mineralization: veinlet-disseminated type, thick quartze vein type and hydrothermal crypto-explosive breccia type. Based on geological studies, this paper presents new petrographic, microthermometric, laser Raman spectroscopic and hydrogen and oxygen isotope research of the fluid inclusions from the deposit. The results show that there are five different types of fluid inclusions: liquid-rich inclusions, vapor-rich inclusions, pure liquid inclusions, pure vapor inclusions, and fluid inclusions containing a solid crystal. The homogenization temperatures of the fluid inclusion range from 140℃-270℃, the salinities are 3%-5% NaCleq and the densities of ore-forming fluid range from 0.64 g/cm3 to 0.99 g/cm3. For the analyses of Laser Raman spectroscopic, the ore-forming fluids can be approximated by a Ca2+-Na+-SO42--Cl- fluid system with small amount of CO2, CH4 and N2. Otherwise, the datas of the pressure, pH and Eh show a fluid metallogenic environment of low pressure, weak acid and weak reduction. The values of the homogenization temperature in 3 types of orebodies suggest that the mineralization is characterized by the decrease of the temperature under the condition of the fluid immiscibility. The H-O isotope values are interpreted to indicate that the ore-forming fluids are mainly composed of magmatic water, and also the meteoric water was added with the process of the magma rising.

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“…The intensive folding and deformed basement are mainly composed of weakly metamorphosed clastic sedimentary rocks in Sinian to Silurian. Overlying upper Jurassic to Cretaceous sedimentary rocks are mostly sandstones deposited in rift basin [31].…”

Section: Geological Settingmentioning

confidence: 99%

Petrogenesis of the Microgranular Enclaves and Their Host Granites from the Xitian Intrusion in South China: Implications for Geodynamic Setting and Mineralization

Liu

Hou

et al. 2020

Minerals

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The South China Block had experienced a significant tectonic transition during the Mesozoic in response to the subduction of the Paleo- and the Pacific Ocean. Large-scale granitic intrusions with massive mineralization are widespread in South China, and their tectonic settings are not defined. The Xitian intrusion is ideal for probing the geodynamic setting and mineralization in South China because they comprise an abundance of microgranular enclaves (MEs) and diverse types of granite associated with mineralization. Age determined by zircon U-Pb dating suggests that the MEs and their host granites are coeval within error, of ca. 152 Ma. The MEs have a similar initial Hf-O isotopic composition as host granites, and the rapid cooling mineral textures indicate that they are autoliths. Geochemical data show that the host granites are high-K, calc-alkaline, and transitional from metaluminous to peraluminous, slightly enriched in light rare earth elements (LREEs) relative to heavy rare earth elements (HREEs), with obvious negative Eu anomalies, belonging to I-type. The Nb/Ta and Zr/Hf ratios indicate the volatile penetrates the magmatic-forming process, and the fluid with abundant volatile could extract metal element effectively from the mantle.

show abstract

Temporal and spatial relationships of granitic magmatism and W mineralization: Insights from the Xingguo orefield, South China

Cited by 21 publications

References 50 publications

Characteristics and Mechanism of the Ore-Forming Fluids in the Shimensi Tungsten Polymetallic Deposit in Southeastern China

Characteristics and Mechanism of the Ore-Forming Fluids in the Shimensi Tungsten Polymetallic Deposit in Southeastern China

Characteristics and Mechanism of the Ore-Forming Fluids in the Shimensi Tungsten Polymetallic Deposit in Southeastern China

Petrogenesis of the Microgranular Enclaves and Their Host Granites from the Xitian Intrusion in South China: Implications for Geodynamic Setting and Mineralization

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