Zircon U-Pb geochronology, geochemistry, and S-Pb isotopic compositions of the Lietinggang iron polymetallic deposit, Tibet, China

Wang, Liqiang; Tang, Juxing; Yi, Yang; Li, Zhuang; Xin, Lin

doi:10.1016/j.oregeorev.2018.05.017

Cited by 20 publications

(23 citation statements)

References 45 publications

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“…The age of the Xin'gaguo mineralization can therefore be inferred from the emplacement ages of the biotite granite and diorite. The geological characteristics of the Xin'gaguo deposit are similar to those of the adjacent Lietinggang and Leqingla deposits (Wang et al, 2016;Wang et al, 2018). Therefore, the Xin'gaguo deposit also formed in the Paleocene.…”

Section: S and Pb Isotopesmentioning

confidence: 57%

“…Sulphur isotopic compositions of ore sulfide are shown in The lead isotopic compositions of ore sulfides are presented in The skarn Pb-Zn polymetallic deposits in the northern Gangdese porphyry metallogenic belt mainly formed in the Paleocene (Figure 12) and are related to the intrusion (Wang et al, 2015;Wang et al, 2016;Wang et al, 2018). The zircon U-Pb age of Xin'gaguo diorite is 59.66 ± 0.52 Ma.…”

Section: S and Pb Isotopesmentioning

confidence: 99%

“…No sulphate is recorded at the Xin'gaguo deposit indicating that sulphur was present in the fluid as HS − and S 2− , and the δ 34 S values of the sulfides can represent that of the mineralized fluid (Hoefs, 2009;Ohmoto & Rye, 1979). The δ 34 S values of twenty sulfide samples range from −4.7 to 4.5‰ and show a bimodal distribution (Figure 16), with most of the samples slightly more negative than the δ 34 S values of sulfides from the majority of magmatic hydrothermal deposits (−3 to +1‰; Hoefs, 2009) but similar to those of the neighbouring Lietinggang deposit (Wang et al, 2018). This similarity could be the result of interactions between magma-derived ore fluid and biogenic sulfide minerals from country rocks with low δ 34 S (i.e.,<−6.9‰) (Duuring et al, 2009;Hoefs, 2009).…”

Section: Sources Of Ore-forming Metalsmentioning

confidence: 99%

“…Moreover, two data points plot near the orogeny curve, and two data points plot between the orogeny and mantle curves. These characteristics suggest that mantle components could also have been involved in the Pb-Zn-(Fe) deposits, which are located adjacent to the Xin'gaguo deposit (Figure 1; Wang et al, 2016Wang et al, , 2018.…”

Section: Sources Of Ore-forming Metalsmentioning

confidence: 99%

“…F I G U R E 1 2 The geochronologic data of skarn Pb-Zn polymetallic deposits in the north margin of Gangdese metallogenic belt. The age of skarn deposits denoting as follows: Yaguila (Gao et al, 2011;Li, Gao, Tang, & Liang, 2010), Mengya'a (Wang et al, 2015), Longmala (Wang et al, 2015), Hahaigang (Li, Wang, Mao, Xu, & Liu, 2014), Leqingla (Wang et al, 2016), Lietinggang (Wang, Tang, Yang, Li, & Lin, 2018) [Colour figure can be viewed at wileyonlinelibrary.com] has much pyrrhotite, indicating that the metallogenic environment changed to a reducing environment, resulting in metal sulfide precipitation. Therefore, the Xin'gaguo deposit has undergone at least three changes in oxidation-reduction environment.…”

Section: Ore-forming Environmentmentioning

confidence: 99%

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Zircon U–Pb geochronology, geochemistry, S–Pb–Hf isotopic compositions, and mineral chemistry of the Xin'gaguo skarn Pb–Zn deposit, Tibet, China

Tang

Wang

et al. 2019

Geological Journal

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The Xin'gaguo deposit is representative of the skarn Pb-Zn polymetallic zone in the northern Gangdese porphyry metallogenic belt, Tibet. Pb-Zn mineralization is hosted in the Take'na formation skarn. The Xin'gaguo ore-forming process can be divided into prograde skarn, retrograde skarn and quartz-sulfides. Skarn minerals include garnet, diopside, and epidote, with minor wollastonite, actinolite, and chlorite. Metallic minerals are mainly sphalerite, galena, chalcopyrite, magnetite, and pyrrhotite, with minor arsenopyrite, marcasite, native bismuth, cosalite, and gersdorffite. The LA-ICP-MS zircon U-Pb age of the diorite is 59.66±0.52 Ma. Diorite samples are characterized by fractioned REE patterns with marked positive Eu anomalies, enriched LILEs (Rb, Ba, Th, U, and K) and depleted HFSEs (Ta, Nb, Zr, Hf, and Ti), belong to the calcalkaline series and have metaluminous compositions. Zircon εHf(t) values of the diorite are positive (5.7-11) and lie between the chondrite and mantle values. These geochemical characteristics suggest that the diorite was formed by the partial melting of a young metasomatized asthenospheric mantle wedge deriving basaltic rocks. The δ 34 S values of sulfides range from −4.7 to 4.5‰ and show a bimodal distribution, indicating interactions of magma-derived ore fluid with biogenic sulfide minerals from the Take'na formation. The 206 Pb/ 204 Pb (18.5-18.629), 207 Pb/ 204 Pb ) of sulfides show that oreforming metals were derived from mixed sources, in part from the Lhasa Terrane basement. Skarn mineral compositions imply that the ore-forming environment was variable, and underwent at least three changes in oxidation-reduction state. The geochemical characteristics of diorite indicate that the Xin'gaguo deposit formed within the Indo-Asian continental collision tectonic setting.

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Section: S and Pb Isotopesmentioning

confidence: 57%

Section: S and Pb Isotopesmentioning

confidence: 99%

Section: Sources Of Ore-forming Metalsmentioning

confidence: 99%

Section: Sources Of Ore-forming Metalsmentioning

confidence: 99%

Section: Ore-forming Environmentmentioning

confidence: 99%

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Zircon U–Pb geochronology, geochemistry, S–Pb–Hf isotopic compositions, and mineral chemistry of the Xin'gaguo skarn Pb–Zn deposit, Tibet, China

Tang

Wang

et al. 2019

Geological Journal

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High heat production of the Late Mesozoic Luanchuan granites from East Qinling Orogen, China: Implications for petrogenesis and mineral exploration

et al. 2023

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Some of the high heat production granites in the continental crust have been suggested to be linked with I‐, A‐, and partly S‐type granitoids which aided in the formation of associated polymetallic deposits. Here, we investigate the Shibaogou and Laojunshan plutons in the Luanchuan region, East Qinling Orogen, China, and integrate these with published geochemical information to compute the rate of heat production per unit rock mass (RHP value, unit μW/m3). In addition, we also present RHP contour maps of all the Late Mesozoic granitic plutons in the Luanchuan region, with a view to evaluate the link among the high heat production granites, their petrogenesis and mineralization. The RHP values of granitoids in the Luanchuan region vary from 1.7 to 14.44, with the Nannihu pluton showing the highest RHP peak value of 6.04, whereas the Huoshenmiao pluton has the lowest RHP peak value of 2.59. The RHP values have a positive correlation with the degree of magma differentiation, as suggested that the Nannihu pluton is a highly fractionated I‐type granite and the Huoshenmiao pluton is a quartz diorite. This is also consistent with U, Th and K which are incompatible elements that tend to enter the melt during magma evolution. Furthermore, the higher RHP value intrusions (e.g., Nannihu, Daping) show close genetic links with high economic deposits, whilst the plutons with lower RHP values are generally related to small ore deposits. We envisage that the high heat production granites underwent protracted cooling process, which promote the convection and circulation of hydrothermal fluids, so that ore‐forming materials (e.g., Mo, W) can sufficiently accumulate and precipitate as economic mineralization. This also indicates that these granitoids with relatively higher RHP values have a greater metallogenic potential. The RHP contour mapping results show high RHP value domains ranging from 2.68 to 4.82 in the southeast and northeast segments of the Shibaogou pluton, whereas the RHP values of other regions in this pluton vary from 2.14 to 2.68. In contrast, the high RHP value regions mostly occur within the western and eastern parts of the Laojunshan pluton, and range from 4.91 to 6.21. Other regions in the Laojunshan pluton have low RHP values in the range of 2.69–4.91. A few Mo‐W deposits are mostly hosted in the southeastern part of the Shibaogou pluton, implying that these regions with high RHP values might have higher metallogenic potential. The contour mapping of RHP maximum, minimum, average and peak values of all the Mesozoic granitic plutons in the Luanchuan region also show high value zones within and/or at peripheral regions of the Nannihu ore fields and these segments between the Nannihu and Yuku ore fields, which suggest that these zones likely have high potential for Mo‐W exploration.

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Cambrian Tempestites in the Xiaweidian Area, Western Beijing City

Liu,

Shi,

Liu

et al. 2024

Field Trip Guidebook on Chinese Sedimentary Geology

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Zircon U-Pb geochronology, geochemistry, and S-Pb isotopic compositions of the Lietinggang iron polymetallic deposit, Tibet, China

Cited by 20 publications

References 45 publications

Zircon U–Pb geochronology, geochemistry, S–Pb–Hf isotopic compositions, and mineral chemistry of the Xin'gaguo skarn Pb–Zn deposit, Tibet, China

Zircon U–Pb geochronology, geochemistry, S–Pb–Hf isotopic compositions, and mineral chemistry of the Xin'gaguo skarn Pb–Zn deposit, Tibet, China

High heat production of the Late Mesozoic Luanchuan granites from East Qinling Orogen, China: Implications for petrogenesis and mineral exploration

Cambrian Tempestites in the Xiaweidian Area, Western Beijing City

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