Skarn metallogeny through zircon record: An example from the Daye Cu-Au-Fe-Mo district, eastern China

Wen, Guang; Zhou, Run-Jie; Li, Jianwei; Chang, Jia; Hu, Hao; Yan, Detian; Wei, Ketao; Jin, Shuanggen

doi:10.1016/j.lithos.2020.105807

Cited by 9 publications

(5 citation statements)

References 65 publications

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“…REE geochemistry is an important factor that helps to examine detailed geochemistry processes [21][22][23][24][25][26][27]. La/Yb ratio is considered to indicate LREE and HREE fractionation, whereas La, Ce and Eu anomalies represent magmatic or hydrothermal fluid redox conditions [28][29][30][31][32][33].…”

Section: Rare Earth Element Geochemistrymentioning

confidence: 99%

Texture and Geochemistry of Scheelites in the Tongshankou Deposit in Daye, Hubei, China: Implication for REE Substitution Mechanism and Multistage W Mineralization Processes

Zhao

Wang

et al. 2021

Minerals

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The Tongshankou skarn deposit in the Edong ore district is a typical metasomatic deposit associated with adjacent granodiorite porphyry and carbonate rocks. Using comprehensive microscopic observations, mineralogical and geochemical analysis, scheelite grains in the skarns can be classified into three major types, showing multi-stage mineralization characteristics. In the redox fluid environment, scheelites that occur with garnets usually have affinity to garnets, while in later skarn phases others exist with oxides and sulfides. They can be subdivided by trace elements, such as Nb and Eu, to discuss the detailed ore-forming process. Scheelites have three typical substitution mechanisms including: 2Ca2 + ⇌ REE3 + +Na+ (1); Ca2 + + W6 + ⇌ REE3 + +Nb5+(2); and 3Ca2 + ⇌ 2REE3++ □Ca (□Ca = Ca site vacancy) (3). Plagioclase or various hydrothermal stages can cause Eu anomalies to fluctuate from positive to negative, and these processes can cause particular zonation in W and Mo contents in scheelites. This study highlights the use of texture and geochemistry of scheelites in skarn deposits, depicting the W mineralization processes.

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Section: Rare Earth Element Geochemistrymentioning

confidence: 99%

Texture and Geochemistry of Scheelites in the Tongshankou Deposit in Daye, Hubei, China: Implication for REE Substitution Mechanism and Multistage W Mineralization Processes

Zhao

Wang

et al. 2021

Minerals

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“…The data on zircon chemical composition (Ce/Ce*, Eu/Eu*, Yb/Dy, (Ce/Nd)/Y) are currently coming into a broad application for determining magmatic rock fertility. In particular, it was established that the values of Ce and Eu anomalies vary depending on ƒO 2 in the melt, and the rocks with potentially high fertility for the porphyry type of mineralization have high Ce/Ce* and Eu/Eu* values [6,22,[39][40][41]. For comparison, we analyzed the data on the content of rare and rare earth elements in zircon grains from different skarn and porphyry deposits of the world [5,6,42,43].…”

Section: Zircon Mineral Geochemistry As An Indicator For Magmatic Fertilitymentioning

confidence: 99%

“…In particular, it was established that the values of Ce and Eu anomalies vary depending on ƒO 2 in the melt, and the rocks with potentially high fertility for the porphyry type of mineralization have high Ce/Ce* and Eu/Eu* values [6,22,[39][40][41]. For comparison, we analyzed the data on the content of rare and rare earth elements in zircon grains from different skarn and porphyry deposits of the world [5,6,42,43]. The results were plotted as a diagram of Ce/Ce* versus Eu/Eu*, and the data on porphyry (Figure 11a-c) and skarn (Figure 11d-f) deposits were plotted separately.…”

Section: Zircon Mineral Geochemistry As An Indicator For Magmatic Fertilitymentioning

confidence: 99%

“…It is observed in Figure 11a-d It is well known that the high content of magmatic water is a characteristic sign of fertility of many porphyry magmas. Now, it has been established by many researchers that the Eu/Eu* and Yb/Dy ratios in zircon may serve as an indirect indicator of the content of magmatic water [5,6]. For comparison, we also analyzed the data on porphyry and skarn deposits.…”

Section: Zircon Mineral Geochemistry As An Indicator For Magmatic Fertilitymentioning

confidence: 99%

“…In a number of articles published within the recent decade, there are statistically justified data on the specific characteristics of definite minerals from ore-bearing rocks for different types of deposits. These minerals include zircon [3][4][5][6], plagioclase [7,8] and biotite [9,10]. One of the main aims of the present work is to establish the indicator features of rock-forming and accessory minerals, evaluating the metal fertility of hosting magmatic formations.…”

Section: Introductionmentioning

confidence: 99%

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Rock-Forming (Biotite and Plagioclase) and Accessory (Zircon) Minerals Geochemistry as an Indicator of the Metal Fertility of Magmas by the Example of Au-Cu-Fe-Skarn Deposits in Eastern Transbaikalia

et al. 2021

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Many gold and gold-bearing complex deposits related to the Late Jurassic and Early Cretaceous magmatism are known in Eastern Transbaikalia. The largest deposits are the Lugokan, the Kultuma and the Bystrinsky. These deposits are in a paragenetic relationship with the Late Jurassic magmatic rocks of the Shakhtama complex. According to the available data, the total resources of gold in these three deposits are estimated to be approximately 443 tons: the Lugokan, Au~53 tons, Cu~302 thousand tons; the Kultuma, Au~121 tons, Cu~587 thousand tons, Fe~33 mln t; the Bystrinsky, Au~269 tons, Cu~2070 thousand tons, Fe~67 mln t. One of the main aims of this work was to reveal the criteria of fertility for the classical porphyry type, based on the specific geochemical features of rock-forming and accessory minerals. A comparison of the obtained results with other data on the large porphyry and skarn deposits of the world showed that the magmatic rocks of the Bystrinsky massif, specifically porphyry species dated 159.6–158.6 Ma, are potentially ore-bearing for the porphyry type mineralization. The magmatic rocks that widely occur at the Lugokan and Kultuma deposits are most close to the Fe-skarn deposits. The best indicators of the magma fertility for the porphyry rocks are Ce/Ce*, Eu/Eu*, Yb/Dy, (Ce/Nd)/Y in zircons. Thus, magmatic rocks characterized by Ce/Ce* > 100, Eu/Eu* > 0.4, Yb/Dy > 5.0 and (Ce/Nd)/Y > 0.01 may be classified as high fertile for the classical porphyry mineralization in Eastern Transbaikalia. The plagioclase and biotite chemistry data also showed that the magmatic rocks that occurred at the Bystrinsky deposit are the most fertile for the porphyry type mineralization. The magmatic rocks classified as ore-bearing porphyry type have Al* > 1 in plagioclase, high values of IV(F) and IV(F/Cl) and low ratios of X(F)/X(OH) in biotites. The assessment of the metal fertility of magmatic rocks is most effective in combination with data on both the composition of rock-forming and accessory minerals. The obtained data may be used to develop the methods of prediction and search for gold, copper and iron mineralization.

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Apatite chemistry as a petrogenetic–metallogenic indicator for skarn ore-related granitoids: an example from the Daye Fe–Cu–(Au–Mo–W) district, Eastern China

Zhou

Wen

et al. 2022

Contrib Mineral Petrol

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Skarn metallogeny through zircon record: An example from the Daye Cu-Au-Fe-Mo district, eastern China

Cited by 9 publications

References 65 publications

Texture and Geochemistry of Scheelites in the Tongshankou Deposit in Daye, Hubei, China: Implication for REE Substitution Mechanism and Multistage W Mineralization Processes

Texture and Geochemistry of Scheelites in the Tongshankou Deposit in Daye, Hubei, China: Implication for REE Substitution Mechanism and Multistage W Mineralization Processes

Rock-Forming (Biotite and Plagioclase) and Accessory (Zircon) Minerals Geochemistry as an Indicator of the Metal Fertility of Magmas by the Example of Au-Cu-Fe-Skarn Deposits in Eastern Transbaikalia

Apatite chemistry as a petrogenetic–metallogenic indicator for skarn ore-related granitoids: an example from the Daye Fe–Cu–(Au–Mo–W) district, Eastern China

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