An Early Cretaceous W-Sn deposit and its implications in southeast coastal metallogenic belt: Constraints from U-Pb, Re-Os, Ar-Ar geochronology at the Feie'shan W-Sn deposit, SE China

Liu, Peng; Mao, Jingwen; Cheng, Yanbo; Wei, Yao; Wang, Xiaoyu; Hao, Di

doi:10.1016/j.oregeorev.2016.09.023

Cited by 59 publications

(11 citation statements)

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“…It is worth noting that cluster or vein biotitization is well developed very close to the quartz–cassiterite–wolframite quartz vein type orebodies in the host rock (Figure a), and under microscope cassiterite can be found coexisting with hydrothermal biotite and fluorite in biotitization vein (Figure f). Although muscovite is known as the common alteration mineral closely related to the mineralization in many greisen–quartz vein type Sn deposits, there are also good cases in which biotitization is a typical hydrothermal alteration showing intimate relationship with Sn–(W) mineralization like Tiantangshan, such as the Feie'shan W–Sn deposit in South China (Liu et al, ) and the Kalzas W deposit in Yukon (Lynch, ). Overall, at the mining scale, intrusive‐centred alteration zonation is well developed.…”

Section: Discussionmentioning

confidence: 99%

Genesis and hydrothermal evolution of the Tiantangshan tin‐polymetallic deposit, south‐eastern Nanling Range, South China

et al. 2018

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The Tiantangshan tin‐polymetallic deposit, located in the Nanling Range of South China, is a medium‐sized polymetallic deposit found in the region in recent years. The deposit is hosted within volcanic rocks, and the orebodies occur in the cupola and outer contact zone of the concealed quartz porphyry, as well as the altered fracture zone of the volcanic rocks close to the intrusive contact. In light of field evidence and petrographic observations, the mineralization can be divided into four stages: greisenization stage (stage I), quartz–cassiterite–wolframite stage (stage II), quartz–fluorite–cassiterite–sulfides stage (stage III), and post‐ore stage (stage IV). Three types of fluid inclusions are present in the hydrothermal topaz, quartz, and fluorite, including H2O‐rich (W‐type, WL‐ and WV‐ subtypes), CO2‐bearing (C‐type), and solid‐bearing (S‐type). Four stages of fluid evolution are observed by detailed fluid inclusion studies: (a) Stage I fluids are trapped under two‐phase immiscible condition, as evidenced by the coexistence of primary aqueous (W‐type) and aqueous‐carbonic (C‐type) fluid inclusions preserved in topaz and quartz; the fluid inclusions display homogenization temperatures of 378–448°C and salinities of 6.0–17.5 wt.% NaCl equiv. (b) Similarly, fluid inclusions in stage II quartz also record immiscible condition, as identified by the coexistence of W‐type and C‐type fluid inclusions with lower homogenization temperatures (308–400°C) and salinities (1.8–14.5 wt.% NaCl equiv.). (c) Stage III fluids are characterized by the coexistence of widespread WL‐subtype, minor S‐type, and rare WV‐subtype fluid inclusions, with similar homogenization temperatures (230–369°C) but contrasting salinities (0.5–39.5 wt.% NaCl equiv.), which indicates an episode of fluid boiling occurred in this stage. (d) Stage IV marks the end of the hydrothermal system characterized by the lower temperatures (175–298°C) and salinities (0.2–3.9 wt.% NaCl equiv.) W‐type fluid inclusions trapped. Microthermometry and H–O isotopes indicate that the early ore‐forming fluids (in stage I) exsolved from the granitic magma and underwent progressive mixing with meteoric water during subsequent ore‐forming process (in stages III and IV). The water–CO2 fluid immiscibility is the main mechanism of cassiterite and wolframite precipitation, while fluid boiling and mixing are probably thought to be the dominant mechanisms for the deposition of sulfide at Tiantangshan. 40Ar/39Ar dating of hydrothermal biotite intergrown with cassiterite shows that tin‐polymetallic mineralization occurred at ~133 Ma which is coeval with the hidden intrusions. Taken together, these lines of evidence confirm that the Tiantangshan deposit is a magmatic hydrothermal greisen–quartz–vein type tin‐polymetallic deposit that formed in the lithospheric extension and thinning setting associated with the postsubduction Paleo‐Pacific Plate tectonic regime that influenced South China.

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Section: Discussionmentioning

confidence: 99%

Genesis and hydrothermal evolution of the Tiantangshan tin‐polymetallic deposit, south‐eastern Nanling Range, South China

et al. 2018

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“…63%) [22]. In addition, the large-scale Sn mineralization in this region is closely related to the Middle Jurassic granitic magmatism, although some Triassic and Cretaceous mineralized events have been reported [39][40][41][42]. The ages of Sn-dominated polymetallic mineralization in the Dayishan ore field, including the Maozaishan deposit, are consistent with the period of large-scale W-Sn polymetallic mineralization event in Nanling Range (165-150 Ma) [6].…”

Section: Timing Of Mineralization and Granitic Magmatismmentioning

confidence: 99%

Geology and Geochronology of the Maozaishan Sn Deposit, Hunan Province: Constraints from Zircon U–Pb and Muscovite Ar–Ar Dating

Guo

et al. 2019

Minerals

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The Maozaishan Sn deposit, located south of the Dayishan ore field in the Nanling Range, is a newly explored greisen-type Sn deposit. Two muscovite samples from tin-bearing ores yielded 40 Ar/ 39 Ar plateau ages of 154.7 ± 1.1 Ma (Mean standard weighted deviation (MSWD) = 0.48) and152.6 ± 0.7 Ma (MSWD = 0.25), respectively. Zircon U-Pb dating result of fine-grained biotite monzogranite in the Maozaishan mining area shows that these zircon grains can be subdivided into two populations, with ages of 154.2 ± 2.0 Ma (MSWD = 0.51) and 159.6 ± 1.9 Ma (MSWD = 0.09), respectively, indicating that the monzogranite is formed by a multi-stage magmatic event. It is indicated that formation of the Maozaishan Sn deposit is closely related to the Middle Jurassic granitic magmatism. Based on the trace element compositions of zircon grains, the calculated magma temperatures and oxygen fugacity (log(f O 2 )) values range from 638 • C to 754 • C (mean = 704 • C) and from −18.9 to −15.8 (mean = −17.1), respectively. In addition, these intrusive rocks in the Dayishan ore field belong to highly fractionated granites and are characterized by low oxygen fugacity and crust-mantle origin, which are consistent to these tin-bearing granites in the Nanling Range and in favor of the Sn mineralization.

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“…Based on field relations and existing geochronological data, Mao et al [68] proposed that the Mesozoic W-polymetallic mineralization in South China can be divided into three episodes: Late Triassic W-Sn-Nb-Ta mineralization (230-210 Ma), Late Jurassic W-Sn mineralization (160-150 Ma), and the Early Cretaceous Sn-W-Cu-Au mineralization (134-80 Ma). The Jurassic and Cretaceous mineralization may were formed under a continental arc environment, with widespread magmatism and related metallogenic events caused by the subduction of the Paleo-Pacific plate [68,69]. Previous studies considered that ca.…”

Section: Tectonic Setting Of the Shimensi Depositmentioning

confidence: 99%

“…Therefore, Mao et al [71] proposed that there was also a weak W-Cu mineralization epoch during 147-136 Ma in South China. It is generally accepted that continental crust extension occurred in South China during the Cretaceous, which was characterized by mafic dykes, pull-apart basins, and volcanic basins [12,[69][70][71]. Crust-mantle interactions were important in forming the granite-related W polymetallic deposits of the Nanling and adjacent areas in the South China interior and were probably related to the magmatic and hydrothermal activities associated with lithospheric thinning in South China.…”

Section: Tectonic Setting Of the Shimensi Depositmentioning

confidence: 99%

Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications

et al. 2017

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Abstract:The Shimensi deposit (Northern Jiangxi, South China) is a recently discovered super-large tungsten deposit. Muscovite 40 Ar/ 39 Ar dating yielded a plateau age of 145.7 ± 0.9 Ma, with normal and inverse isochronal ages being 145.4 ± 1.4 Ma and 145.3 ± 1.4 Ma, respectively. The muscovite 40 Ar/ 39 Ar age, which can represent the mineralization age, coincides well with the published zircon U-Pb ages (143-148 Ma) of the ore-hosting granites, which indicates that the tungsten mineralization was syn-magmatic. The new age reported here confirms that the Shimensi tungsten deposit is part of a large Early Cretaceous (147-136 Ma) tungsten-polymetallic belt in South China. Measured and calculated sulfur isotopic compositions (δ 34 S minerals = −3.0 to 1.1 , average −1.3 ; δ 34 S H 2 S = −4.5 to +1.2 , average −1.8 ) of the Shimensi ore-forming fluids indicate that the sulfur was mainly magmatic-derived. The calculated and measured oxygen and hydrogen isotopic compositions (δ 18 O H 2 O = 4.1 to 6.7 , δD = −62.7 to −68 ) of the ore-forming fluids indicate a dominantly magmatic source with a meteoric water input. Oxygen isotopic modelling of the boiling/mixing processes indicates that the Shimensi tungsten mineralization was caused mainly by fluid mixing of magmatic hydrothermal fluid with meteoric water.

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An Early Cretaceous W-Sn deposit and its implications in southeast coastal metallogenic belt: Constraints from U-Pb, Re-Os, Ar-Ar geochronology at the Feie'shan W-Sn deposit, SE China

Cited by 59 publications

References 39 publications

Genesis and hydrothermal evolution of the Tiantangshan tin‐polymetallic deposit, south‐eastern Nanling Range, South China

Genesis and hydrothermal evolution of the Tiantangshan tin‐polymetallic deposit, south‐eastern Nanling Range, South China

Geology and Geochronology of the Maozaishan Sn Deposit, Hunan Province: Constraints from Zircon U–Pb and Muscovite Ar–Ar Dating

Muscovite 40Ar/39Ar Age and H-O-S Isotopes of the Shimensi Tungsten Deposit (Northern Jiangxi Province, South China) and Their Metallogenic Implications

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