Oxygen fugacity and porphyry mineralization: A zircon perspective of Dexing porphyry Cu deposit, China

Zhang, Chan-chan; Sun, Weidong; Wang, J.; Zhang, Lipeng; Sun, Shengsi; Wu, Kai

doi:10.1016/j.gca.2017.03.013

Cited by 170 publications

(55 citation statements)

References 128 publications

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“…Zircon, one of the common accessory minerals in the granitoids, contains some specific elements, including Ti, Hf, Nb, and REEs, which could provide significant information on the physico-chemical conditions of the magmatic melt [43][44][45][46][47][48][49][50][51][52][53][54][55][56]. It was proposed that the Ti behavior in the zircon grains were sensitive to the temperatures of the melt [50,51].…”

Section: Physico-chemical Of Condition Of the Granitic Magmamentioning

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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Section: Physico-chemical Of Condition Of the Granitic Magmamentioning

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 magmatic oxygen fugacity is a key factor in controlling the magmatic fertility of porphyry deposits (Lehmann 1990;Wittenbrink et al 2009;Sun et al 2013Sun et al , 2015Zhang et al 2017;Zhong et al 2017b). There is a consensus that oxidized magmas are more favorable than reduced magmas in generating porphyry Cu deposits (Imai 2002;Liang et al 2006;Lu et al 2016;Li et al 2017a), considering that at higher oxygen fugacity, magmatic sulfur exists mainly as sulfate (SO 4 2− ) which has a much higher solubility in silicate melts than sulfide and will tend to delay or even prevent saturation of a magmatic sulfide phase (Ballard et al 2002;Richards 2003).…”

Section: Magmatic Oxygen Fugacitymentioning

confidence: 99%

“…During the last decade, a large number of studies have illustrated that the composition of zircon and apatite can well reflect information of their host rocks Belousova et al 2002a, b;Breiter and Skoda 2012;Burnham and Berry 2012;Cao et al 2012;Seifert et al 2012;Trail et al 2012;Bruand et al 2017) and may be effective as indicator minerals in porphyry exploration (Ballard et al 2002;Liang et al 2006;Li et al 2012;Han et al 2013;Qiu et al 2013;Zhang et al 2013;Zhang et al 2017). The origin and evolution of ore-forming magmas of skarn deposits are, in many aspects, similar to those of porphyry deposits (Sillitoe and Bonham 1990;Baker et al 2004;Meinert et al 2005;Mao et al 2006;Sillitoe 2010), which means that zircon and apatite may also be applied to exploration of skarn deposits.…”

Section: Introductionmentioning

confidence: 99%

Geochemical contrasts between Late Triassic ore-bearing and barren intrusions in the Weibao Cu–Pb–Zn deposit, East Kunlun Mountains, NW China: constraints from accessory minerals (zircon and apatite)

et al. 2017

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The Weibao copper-lead-zinc skarn deposit is located in the northern East Kunlun terrane, NW China. Igneous intrusions in this deposit consist of barren diorite porphyry (U-Pb zircon age of 232.0 ± 2.0 Ma) and ore-bearing quartz diorite and pyroxene diorite (U-Pb zircon ages of 223.3 ± 1.5 and 224.6 ± 2.9 Ma, respectively). Whole-rock major and trace element and accessory mineral (zircon and apatite) composition from these intrusions are studied to examine the different geochemical characteristics of orebearing and barren intrusions. Compared to the barren diorite porphyry, the ore-bearing intrusions have higher Ce 4+ /Ce 3+ ratios of zircon and lower Mn contents of apatite, indicating higher oxidation state. Besides, apatite from the ore-bearing intrusions shows higher Cl contents and lower F/Cl ratios. These characteristics collectively suggest the higher productivity of ore-bearing quartz diorite and pyroxene diorite. When compared with ore-bearing intrusions from global porphyry Cu deposits, those from Cu-Pb-Zn skarn deposits display lower Ce 4+ /Ce 3+ and Eu N /Eu N * ratios of zircon and lower Cl and higher F/Cl ratios of apatite. We conclude that these differences reflect a general geochemical feature, and that zircon and apatite composition is a sensitive tool to infer economic potential of magmas and the resulting mineralization types in intrusion-related exploration targets.

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“…(, ) and Zhang et al. () discussed the effect of oxygen fugacity change, and attributed alteration and mineralization of porphyry deposits to the reduction of sulphate in the magmatic fluids.…”

Section: Introductionmentioning

confidence: 99%

“…But several studies indicate that magmatic fluids alone can cause all the alteration and mineralization from early to late stage (Harris & Golding, 2002; Reed, Rusk & Palandri, 2013; Watanabe & Hedenquist, 2001). In addition, Sun et al (2013Sun et al ( , 2015 and Zhang et al (2017) discussed the effect of oxygen fugacity change, and attributed alteration and mineralization of porphyry deposits to the reduction of sulphate in the magmatic fluids.…”

Section: Introductionmentioning

confidence: 99%

In‐situ analysis of trace elements and Sr–Pb isotopes of K‐feldspars from Tongshankou Cu–Mo deposit, SE Hubei Province, China: Insights into early potassic alteration of the porphyry mineralization system

Jiang

2017

Terra Nova

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In the Tongshankou porphyry deposit (SE Hubei Province, South China), three types of K‐feldspars are recognized: (I) the phenocryst type in the porphyry that crystalized during the magmatic stage, (II) the megacryst type and (III) the vein type in the altered porphyry and orebody that was produced by hydrothermal fluids. A detailed in‐situ analysis of trace elements and Sr–Pb isotopes was carried out on K‐feldspars in an attempt to unravel their formation processes and to trace the element sources during potassic alteration. The Type III K‐feldspars show lower Sr contents and Sr‐isotope ratios but higher Pb contents and Pb‐isotope ratios than the Type I and II K‐feldspars, possibly reflecting a contribution from the country carbonate rocks with less radiogenic Sr but more radiogenic Pb sources, and indicate that the ore‐forming fluids and materials may have been partially derived from external sources such as the host sedimentary rocks during the early potassic alteration stage.

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Oxygen fugacity and porphyry mineralization: A zircon perspective of Dexing porphyry Cu deposit, China

Cited by 170 publications

References 128 publications

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

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

Geochemical contrasts between Late Triassic ore-bearing and barren intrusions in the Weibao Cu–Pb–Zn deposit, East Kunlun Mountains, NW China: constraints from accessory minerals (zircon and apatite)

In‐situ analysis of trace elements and Sr–Pb isotopes of K‐feldspars from Tongshankou Cu–Mo deposit, SE Hubei Province, China: Insights into early potassic alteration of the porphyry mineralization system

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