The genesis of the Hashitu porphyry molybdenum deposit, Inner Mongolia, NE China: constraints from mineralogical, fluid inclusion, and multiple isotope (H, O, S, Mo, Pb) studies

Zhai, Degao; Liu, Jiajun; Tombros, Stylianos; Williams‐Jones, Anthony E.

doi:10.1007/s00126-017-0745-5

Cited by 43 publications

(9 citation statements)

References 68 publications

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“…6a). The relatively F-rich feature of the Hashitu synmineralization intrusions is consistent with the occurrence of magmatic fluorite in the intrusions (Appendix Figure 2a) and appreciable hydrothermal fluorite in the deposit (Zhai et al 2018). It also consistent with the observation that porphyry Mo This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.…”

Section: Effect Of Magma F and CL Contentssupporting

confidence: 80%

“…1a), a composite accretionary orogen formed by the evolution of the Paleo-Asian ocean during the Paleozoic to Triassic (Windley et al 2007;Zhang et al, 2019;Liu et al, 2020), and by the evolution of the Paleo-Pacific ocean and Mongolia-Okhotsk ocean during the Early Jurassic to Cretaceous (Wu et al 2005;Xu et al 2013). The deposit contains an indicated resource of 0.13 Mt Mo at an average grade of 0.13 wt% (Zhai et al 2018).…”

Section: Geology Of the Hashitu Mo Depositmentioning

confidence: 99%

“…Mineralization in the deposit is characterized by molybdenite-bearing quartz±fluorite veins, veinlets or breccias with sericite and chlorite alteration in the premineralization monzogranite and syn-mineralization syenogranite (Fig. 1f; Appendix Figure 1; Zhang et al 2012;Zhai et al 2014Zhai et al , 2018Ouyang et al 2020), which are the two main lithologies cropping out in the deposit. The pre-mineralization monzogranite varies from coarse equigranular to slightly porphyritic and is exposed (Meng 2003;Wu et al 2011).…”

Section: Geology Of the Hashitu Mo Depositmentioning

confidence: 99%

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Controls on the formation of porphyry Mo deposits: Insights from porphyry (-skarn) Mo deposits in northeastern China

Ouyang

Caulfield

Mao

et al. 2022

American Mineralogist

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Porphyry Mo deposits have traditionally been classified into two major classes; arcrelated and Climax-type based on the tectonic setting and chemistry of associated intrusions. Although there is a consensus that porphyry Mo systems were formed by the optimal coincidence of geological processes operating at different scales, it is unclear what key parameter(s) render systems productive and whether the two classes of porphyry Mo deposits are unique in their mode of formation, or if they share fundamentally similar geological processes. These questions are important as a clearer understanding of the optimum conditions for the formation of porphyry Mo deposits is a prerequisite for more efficient exploration. This contribution presents a detailed assessment of the factors affecting the formation of porphyry Mo deposits through the investigation of barren and mineralized intrusions from the arc-related Songbei-Yangjiazhangzi-Lanjiagou ore zone and the Climax-type Hashitu deposit of northeastern China. Our results show that the syn-mineralization intrusions from the Songbei-Yangjiazhangzi-Lanjiagou ore zone are quite evolved (SiO2 ~ 75 wt%; Na2O+K2O ~ 8.7 wt%) and are characterized by apparent light rare earth element (LREE) enrichments (LaN/YbN=2.7-33.1) and moderate negative Eu anomalies (Eu/Eu*=0.4-0.7). They show enriched zircon Hf isotopic compositions (ɛHf(t)=-11.9 --4.8), indicating their parental magmas were likely derived from an ancient crustal source. Melt inclusions from the Songbei-Yangjiazhangzi-Lanjiagou syn-mineralization intrusions contain negligible F and Cl. In contrast, Hashitu syn-mineralization intrusions are characterized by weak LREE enrichments (LaN/YbN=2.2-6.9) and strong negative Eu anomalies (Eu/Eu*=0.02-0.10), with SiO2 and Na2O+K2O contents similar to the Songbei-Yangjiazhangzi-Lanjiagou syn-mineralization intrusions. They show depleted zircon Hf isotopic compositions (ɛHf(t)=3.1-5.0), indicating their parental magmas were likely derived from a juvenile crustal source. Melt inclusions from the Hashitu syn-mineralization intrusions contain up to 0.4 wt% F and 0.03 to 0.09 wt% Cl. However, in both cases, the syn-mineralization intrusions are Mo-poor (1-7 ppm Mo), oxidized (above the This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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Section: Effect Of Magma F and CL Contentssupporting

confidence: 80%

Section: Geology Of the Hashitu Mo Depositmentioning

confidence: 99%

Section: Geology Of the Hashitu Mo Depositmentioning

confidence: 99%

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Controls on the formation of porphyry Mo deposits: Insights from porphyry (-skarn) Mo deposits in northeastern China

Ouyang

Caulfield

Mao

et al. 2022

American Mineralogist

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“…(2) the Paleo-Asian Ocean closed, and the Paleo-Pacific Plate began to subduct (~259-247 Ma); (3) the westward advance of the Paleo-Pacific Plate dominated the geotectonic environment coincident with the southward subduction of the Mongol-Okhotsk Ocean (~190- 130 Ma); and (4) the Paleo-Pacific Plate retreated eastward, resulting in an extensional setting (with regional thinning or delamination of the lithosphere) in the Erguna massif (~130 Ma) [37][38][39][40]. Many different types of intrusions and hydrothermal deposits formed during the above-mentioned tectonic events in the region [41].…”

Section: Regional Geologymentioning

confidence: 99%

Geochronology, Geochemistry, and Pb–Hf Isotopic Composition of Mineralization-Related Magmatic Rocks in the Erdaohezi Pb–Zn Polymetallic Deposit, Great Xing’an Range, Northeast China

Sun

Liang

et al. 2020

Minerals

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Late Mesozoic intermediate-felsic volcanics and hypabyssal intrusions are common across the western slope of the Great Xing'an Range (GXAR). Spatiotemporally, these hypabyssal intrusions are closely associated with epithermal Pb-Zn polymetallic deposits. However, few studies have investigated the petrogenesis, contributions and constraints of these Pb-Zn polymetallic mineralization-related intrusions. Therefore, we examine the representative Erdaohezi deposit and show that these mineralization-related hypabyssal intrusions are composed of quartz porphyry and andesite porphyry with concordant zircon U-Pb ages of 160.3 ± 1.4 Ma and 133.9 ± 0.9 Ma, respectively. These intrusions are peraluminous and high-K calc-alkaline or shoshonitic with high Na 2 O + K 2 O contents, enrichment in large ion lithophile elements (LILEs; e.g., Rb, Th, and U), and depletion in high field strength elements (HFSEs; e.g., Nb, Ta, Zr, and Hf), similar to continental arc intrusions. The zircon εHf(t) values range from 3.1 to 8.0, and the 176 Hf/ 177 Hf values range from 0.282780 to 0.282886, with Hf-based Mesoproterozoic T DM2 ages. No differences exist in the Pb isotope ratios among the quartz porphyry, andesite porphyry and ore body sulfide minerals. Detailed elemental and isotopic data imply that the quartz porphyry originated from a mixture of lower crust and newly underplated basaltic crust, while the andesite porphyry formed from the partial melting of Mesoproterozoic lower crust with the minor input of mantle materials. Furthermore, a magmatic-hydrothermal origin is favored for the Pb-Zn polymetallic mineralization in the Erdaohezi deposit. Integrating new and published tectonic evolution data, we suggest that the polymetallic mineralization-related magmatism in the Erdaohezi deposit occurred in a back-arc extensional environment at~133 Ma in response to the rollback of the Paleo-Pacific Plate.

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“…The southern segment of the Great Hinggan Range Metallogenic Belt hosts a number of porphyry Mo–(Cu), skarn Fe–(Sn), and polymetallic (Ag–Pb–Zn–Cu) epithermal and hydrothermal vein deposits (Fig. 1 a ; Ouyang et al , 2015; Shu et al , 2016; Chen et al , 2017; Gao et al , 2017; Zhai et al , 2014 a , b , 2018 a , 2019). These deposits are hosted mainly by Permian strata (e.g.…”

Section: Regional and Deposit Geologymentioning

confidence: 99%

Discovery of Se-rich canfieldite, Ag8Sn(S,Se)6, from the Shuangjianzishan Ag–Pb–Zn deposit, NE China: A multimethodic chemical and structural study

Zhai

Bindi

Voudouris

et al. 2018

MinMag

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During a study of the ore minerals belonging to the recently discovered Shuangjianzishan Ag–Pb–Zn deposit in NE China, we have discovered exceptional selenium enrichment in canfieldite (up to 11.6 wt.% of Se). Incorporation of Se into canfieldite has been investigated by an integrated approach using field emission scanning electron microscopy, electron microprobe and single-crystal X-ray diffraction. Canfieldite has been identified as one of the dominant Ag-bearing ore minerals in the studied deposit, which occurs mostly in slate-hosted vein type Ag–Pb–Zn ore bodies. Selenium is either homogeneously or, remarkably, heterogeneously distributed in the different canfieldite fragments studied. Chemical variations of Se are mostly attributable to a series of retrograde reactions resulting in diverse decomposition and exsolution of primary phases during cooling, or alternatively, related to influxes of Se-rich fluids during the formation of canfieldite. To evaluate the effects of the Se-for-S substitution in the structure, a crystal of Se-rich canfieldite [Ag7.98Sn1.02(S4.19Se1.81)Σ6.00] was investigated. The unit-cell parameters are: a = 10.8145(8) Å and V = 1264.8(3) Å3. The structure was refined in the space group F$\bar{4}$3m to R1 = 0.0315 for 194 independent reflections, with 20 parameters. The crystal structure of Se-rich canfieldite was found to be topologically identical to that of pure canfieldite. If the short Ag–Ag contacts are ignored (due to the disorder), the two Ag atoms in the structure can be considered as three-fold (Ag1) and four-fold (Ag2) coordinated. Tin adopts a regular tetrahedral coordination. As in the case of Te-rich canfieldite, the refinement of the site-occupancy factor indicates that Se is disordered over the three anion positions.

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The genesis of the Hashitu porphyry molybdenum deposit, Inner Mongolia, NE China: constraints from mineralogical, fluid inclusion, and multiple isotope (H, O, S, Mo, Pb) studies

Cited by 43 publications

References 68 publications

Controls on the formation of porphyry Mo deposits: Insights from porphyry (-skarn) Mo deposits in northeastern China

Controls on the formation of porphyry Mo deposits: Insights from porphyry (-skarn) Mo deposits in northeastern China

Geochronology, Geochemistry, and Pb–Hf Isotopic Composition of Mineralization-Related Magmatic Rocks in the Erdaohezi Pb–Zn Polymetallic Deposit, Great Xing’an Range, Northeast China

Discovery of Se-rich canfieldite, Ag8Sn(S,Se)6, from the Shuangjianzishan Ag–Pb–Zn deposit, NE China: A multimethodic chemical and structural study

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