Ore-forming fluids in gold-telluride deposits in the Pingyi area, western Shandong, China

Hu, Huabin; Mao, Jingwen; Shuyin, Niu; Chai, Fei; Li, Yongfeng; Li, Mengwen

doi:10.1007/3-540-27946-6_356

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…In addition, the syenites were also mineralized locally as reported in some previous studies (Hu et al, 2005b;Yu, 2010). Based on the micro-observations that indicate the fluorine-rich hydrothermal fluid was exsolved from the syenite magma, it is logical to consider that the gold mineralization is temporally related with the intrusions.…”

Section: Geochronology Of the Gold Mineralization And Its Significancesupporting

confidence: 51%

“…The extensional stress in this post-collisional setting caused the partial melting of the Taishan Group, which is the basement of the Luxi Block and is considered to be the source of gold (Hu et al, 2005a;Jahn et al, 1988;Qiu et al, 1993Qiu et al, , 1994Shen et al, 2001;Teng, 1994;Wang, 2010;Wang et al, 2008;Xu et al, 2004a,b;Yu, 2010). The Tongshi alkaline magmas produced by this decompression partial melting process intruded into carbonate sequence along the faults, and cryptoexploded in the Guilaizhuang area at 180 Ma.…”

Section: Geochronology Of the Gold Mineralization And Its Significancementioning

confidence: 93%

“…Previous researches revealed that the fluoritization in this district is genetically related with the gold mineralization (Hu, 2005;Hu et al, 2005a;Yu, 2010), and thus we investigate the wallrock syenite underwent the autometasomatic process by the fluorine-rich fluids, and present U-Pb age data from zircon grains in this rock. Moreover, we present a Sm-Nd mineral isochron data on fluorite and calcite from the breccia ores, which formed approximately simultaneously to the gold mineralization in this deposit (Hu, 2005;Shen et al, 2001;Yu, 2010), and also are proved to be cogenetic based on microscope observations.…”

Section: Introductionmentioning

confidence: 98%

See 2 more Smart Citations

Geochronology of the Guilaizhuang gold deposit, Luxi Block, eastern North China Craton: Constraints from zircon U–Pb and fluorite-calcite Sm–Nd dating

Fan

et al. 2015

Ore Geology Reviews

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Section: Geochronology Of the Gold Mineralization And Its Significancesupporting

confidence: 51%

Section: Geochronology Of the Gold Mineralization And Its Significancementioning

confidence: 93%

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Geochronology of the Guilaizhuang gold deposit, Luxi Block, eastern North China Craton: Constraints from zircon U–Pb and fluorite-calcite Sm–Nd dating

Fan

et al. 2015

Ore Geology Reviews

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“…The w ( 40 Ar)/w ( 39 Ar) analyses of amphiboles from the diorite porphyrite and the syenite porphyry suites have recorded ages of 188.4~189.8Ma [21]. The zircon SHRIMP U-Pb ages vary from 167.9Ma to 183Ma [22]. The mineralization has the zonation with the center of the Tongshi complex: Porphyry gold occurrences are located within the intrusive complex.…”

Section: Applicationmentioning

confidence: 99%

Extraction of Gravity Anomalies Associated with Gold Mineralization: A Comparison of Singular Value Decomposition and Bi-Dimensional Empirical Mode Decomposition

Chen

Zhao

2012

AMR

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Two methods of both the singular value decomposition (SVD) and the Bi-dimensional empirical mode decomposition (BEMD) were applied in extraction of gravity anomalies associated with gold mineralization in Tongshi gold field, respectively in this paper. Conclusions drawn by the comparison study are as follows: (a) The ore-controlling factor in the Tongshi gold field illustrated in the images obtained from the original gravity data by the two methods is the same that the Tongshi intrusions with a negative circular gravity anomaly and the ring contact metasomatic mineralization zone around the Tongshi intrusions with the positive gravity anomaly. (b) The two methods reveal the same spatial relationship between the ore-controlling factor and various gold mineralizations that the skarn and porphyry types of gold deposits are located within the complex pluton and the Carlin and Crypto-breccia types of gold deposits located within the contact metasomatic mineralization zone. (c) The image produced by BEMD not only reflects the structural features of the ore-controlling factor (Tongshi complex pluton), but also does the distributions of the other geological units in the Tongshi gold field such as the Mesozoic volcanic sedimentary basin in NW orientation with obvious negative gravity anomaly and the conceal metamorphic base swell in NW orientation with the positive gravity anomaly located between the Tongshi intrusions and the Mesozoic volcanic sedimentary basin. The image produced by SVD might depict in more detail the inner structure of the Tongshi intrusions and the ring contact metasomatic zone than that produced by BEMD. The higher gravity anomaly areas in island shape within the ring contact metasomatic zone may be caused by the skarn bodies with iron-copper-gold mineralization. (d) Under the constraints of the ore-forming geological setting, the results obtained from the original gravity data by combination of the two methods can depict the relationships between the ore-controlling factors and the gold mineralizations more exactly than the alternative methods.

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“…The w( 40 Ar)/w( 39 Ar) analysis of amphiboles from the diorite porphyrite and the syenite porphyry suites have recorded ages of 188.4 Ma and 189.8 Ma (Lin and Tan, 1996). The zircon SHRIMP U-Pb ages vary from 167.9 Ma to 183 Ma (Hu et al, 2005). The mineralization has the zonation with the center of the Tongshi complex: porphyry gold occurrences are located within the intrusive complex.…”

Section: Mineralization Characteristics In Tongshi Gold Fieldmentioning

confidence: 99%

Singular value decomposition (SVD) for extraction of gravity anomaly associated with gold mineralization in Tongshi gold field, Western Shandong Uplifted Block, Eastern China

Zhao

Chen

2011

Nonlin. Processes Geophys.

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Abstract.A singular value decomposition (SVD) program on MATLAB platform was effectively used to handle gravity signals for the Tongshi gold field. Firstly, the gravity signals were decomposed into different eigenimages with the help of singular value decomposition method (SVD). Secondly, the thresholds between the eigenvalues reflecting different layers of ore-controlling factors were established by multi-fractal method. Finally images reflecting different layers of orecontrolling factors were rebuilt. This yielded two layers of two-dimensional singular value images that depict regional and local ore-controlling factors, respectively.1. The regional ore-controlling factor is a saddle valley with the gravity anomaly values varying from −55 to 51 µm s −2 on the NW trending swell with the gravity anomaly values varying from −55 to 567 µm s −2 on the SW side of the Mesozoic volcanic sedimentary basin with the gravity anomaly values varying from −56 to −974 µm s −2 . The saddle valley might be tectonically an extensional area where the Tongshi complex pluton and all gold deposits are located and thus this area is favorable for gold deposits.2. The local ore-controlling factor is the Tongshi complex pluton with a negative circular gravity anomaly varying from −339 to −11 µm s −2 and the ring contact metasomatic mineralization zone around the Tongshi complex with the positive gravity anomaly varying from 37 to 345 µm s −2 . The skarn and porphyry types of gold deposits are located within the complex pluton and the Carlin and cryptobreccia types of gold deposits areCorrespondence to: Y. Q. Chen (yqchen@cugb.edu.cn) located within the contact metasomatic mineralization zone. Thus both of them are potential areas for gold deposits.3. The Tongshi gold field exhibits a typical complexity with multi-layers of ore-controlling factors.

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Ore-forming fluids in gold-telluride deposits in the Pingyi area, western Shandong, China

Cited by 4 publications

References 2 publications

Geochronology of the Guilaizhuang gold deposit, Luxi Block, eastern North China Craton: Constraints from zircon U–Pb and fluorite-calcite Sm–Nd dating

Geochronology of the Guilaizhuang gold deposit, Luxi Block, eastern North China Craton: Constraints from zircon U–Pb and fluorite-calcite Sm–Nd dating

Extraction of Gravity Anomalies Associated with Gold Mineralization: A Comparison of Singular Value Decomposition and Bi-Dimensional Empirical Mode Decomposition

Singular value decomposition (SVD) for extraction of gravity anomaly associated with gold mineralization in Tongshi gold field, Western Shandong Uplifted Block, Eastern China

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