Hydrothermal source rocks of the Meng'entaolegai Ag-Pb-Zn deposit in the granite batholith, Inner Mongolia, China: Constrained by isotopic geochemistry

Zhu, Xiwen; Zhang, Qian; He, Yu; Zhu, Chongshu; Huang, Yan

doi:10.2343/geochemj.40.265

Cited by 29 publications

(11 citation statements)

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“…Rare earth element (REE) geochemistry studies can also provide information regarding the sources of ore‐forming materials (Zhao and Jiang, ). Likewise, sulphur and strontium isotopes can be used to trace the sources of S, Ca, Sr, and Ba in metallogenic systems effectively (Ruiz and Kesler, ; Barbieri and Bellanca, ; Hoefs, ; Jiang et al , ; Chen et al , , ; Zhu et al , ; Li et al , ; Wang et al , ; ). Nevertheless, the use of only single‐isotope data may yield incomplete conclusions, and it may even result in contradictory conclusions (Dejonghe et al , ).…”

Section: Introductionmentioning

confidence: 99%

The source of Fengjia and Langxi barite–fluorite deposits in southeastern Sichuan, China: evidence from rare earth elements and S, Sr, and Sm–Nd isotopic data

et al. 2016

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The barite-fluorite metallogenic belt in southeastern Sichuan is one of the most important barite-fluorite ore-concentrated areas in China. In order to find the ore-forming source and the mineralization age of the Fengjia and Langxi barite-fluorite deposit, we systematically evaluated the rare earth element (REE) contents and isotopic characteristics of S, Sr, and Sm-Nd. The results show that the δ34S values of barites and pyrites are high and similar to S isotopic values of gypsum in the Cambrian Qingxudong Formation (∈ 1 q), suggesting that the sulphur source was from Cambrian evaporite strata. The initial 87 Sr/ 86 Sr ratios of fluorites and barites range from 0.708800 to 0.712999, and these values are similar to Cambrian carbonate rocks and Lower Ordovician limestone. Except for black shales of the Lower Cambrian Niutitang Formation, the Ba content of other strata was generally low. The REE characteristics of barite and fluorite have close relationships, in regard to the source of ore-forming materials, to the Lower Cambrian Niutitang Formation black shales. Hence, we have concluded that the Cambrian carbonate rocks and Lower Ordovician limestone provide the source of calcium for mineralization and that the source of barium comes from the Lower Cambrian Niutitang Formation black shales. The fluorine contents of the Upper Sinian Doushantuo Formation and the Lower Cambrian Mingxinshi Formation are much higher than other strata, and these formations could provide the source for fluorine. The Sm-Nd isochron age of fluorites is 104 ± 11 Ma, which demonstrates that the mineralization mainly occurred during the late Yanshanian.

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Section: Introductionmentioning

confidence: 99%

The source of Fengjia and Langxi barite–fluorite deposits in southeastern Sichuan, China: evidence from rare earth elements and S, Sr, and Sm–Nd isotopic data

et al. 2016

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“…Geochronological data published for the Mo (Pb-Zn-Ag) mineralization in the southern part of the Great Xing'an Range [56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72]…”

Section: Ages Of Magmatism and Metallogenesismentioning

confidence: 99%

“…Geochronological data published for the Mo (Pb-Zn-Ag) mineralization in the southern part of the Great Xing'an Range [55,[58][59][60][61][62][63][64][65][66][67][68][69][70][71][72] are shown that this region records four stages for Mo (Pb-Zn-Ag) mineralization: (1) Late Permian (265 Ma), (2) Middle Triassic (244-235 Ma), (3) Middle-Late Jurassic (179-161 Ma), and (4) Late Jurassic-Early Cretaceous (147-132 Ma). The age of 162.6 ± 1.5 Ma obtained in this study is also consistent with the Middle-Late Jurassic stage of Mo-polymetallic mineralization in the southern part of the Great Xing'an Range, such as the Lianhuashan Cu + Ag + Mo deposit with a zircon U-Pb age of 161.8 Ma and the Shuangjianzishan deposit with a pyrite Re-Os isochron age of 165 ± 4 Ma, and slightly younger than the Meng'enTolgoi deposit, which had a muscovite Ar-Ar isochron age of 179 ± 2 Ma [58][59][60] (Figure 17). in this study is also consistent with the Middle-Late Jurassic stage of Mo-polymetallic mineralization in the southern part of the Great Xing'an Range, such as the Lianhuashan Cu + Ag + Mo deposit with a zircon U-Pb age of 161.8 Ma and the Shuangjianzishan deposit with a pyrite Re-Os isochron age of 165 ± 4 Ma, and slightly younger than the Meng'enTolgoi deposit, which had a muscovite Ar-Ar isochron age of 179 ± 2 Ma ( Figure 17) [57,58].…”

Section: Ages Of Magmatism and Metallogenesismentioning

confidence: 99%

Geochronology of Magmatism and Mineralization in the Dongbulage Mo-Polymetallic Deposit, Northeast China: Implications for the Timing of Mineralization and Ore Genesis

Wang

Liu

et al. 2019

Minerals

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The recently discovered Dongbulage Mo-polymetallic deposit is located in the southern part of the Great Xing'an Range, northeast China. Mineralization is closely related to the emplacement of Middle-Late Jurassic granitoids. In order to understand the petrogenetic link between mineralization and host granitoids, this study presents new zircon U-Pb ages, bulk-rock geochemistry, and molybdenite Re-Os ages for the Dongbulage deposits. LA-ICP-MS zircon U-Pb dating of the monzogranite and syenogranite intrusions yielded two weighted mean 206 Pb/ 238 U ages: of 164 ± 2 Ma and 165 ± 3 Ma, respectively. The subvolcanic rocks (red porphyritic granite and rhyolite) yielded a time interval between 161 ± 2 and 162 ± 3 Ma. In addition, molybdenite from the Dongbulage deposit gave a Re-Os isochron age of 162.6 ± 1.5 Ma, which was interpreted as the age of the mineralization. The new geochronology has established the close temporal and genetic relationships between the mineralization event and the emplacement of the Middle-Late Jurassic granitoids. Bulk-rock geochemistry shows that the Dongbulage granitoids are characterized by high SiO 2 , K 2 O, and A/CNK [Al 2 O 3 /(CaO + Na 2 O + K 2 O)(molar ratio)] values, and low TiO 2 , CaO, and MgO values, indicating a metaluminous to peraluminous, high-K calc-alkaline affinity. The granitoids also featured enrichments of large ion lithophile elements and light rare earth elements (LREE), and a relative depletion of high field strength elements (HFSE), along with an increasing negative δEu anomaly. The high differentiation index (DI), ranging from 81.75 to 94.76, and obvious fractionation between LREE and HREE, indicate that the Dongbulage granitoids are highly fractionated, metaluminous-peraluminous, and high-K calc-alkaline I-type granites. Combined with the regional geology, the Dongbulage granitoids may have formed during post-orogenic extension that followed the Mongol-Okhotsk Ocean closure coeval with subduction of the paleo-Pacific plate.Minerals 2019, 9, 255 2 of 34 source in China. This region is characterized by abundant highly evolved Mesozoic igneous rocks [2], and contains large-scale Ag-, Sn-, Mo-, and Cu-polymetallic vein deposits (Figure 1a) [3,4]. In this region, seven large base metal (≥0.5 Mt) and rare metal (≥0.2 Mt) deposits, and 25 smaller (0.1-0.5 Mt) base metal deposits have been discovered [5]. Three newly recognized metallogenic belts are located within the Great Xing'an Range and its adjacent areas. These are: the northern Mo ± Cu ore-forming belt; the middle Sn ± W ± Ag metallogenic belt; and the southern Mo ore-forming belt (Figure 1b) [6]. The recently discovered Dongbulage deposit is located where the northern Mo ± Cu and middle Sn ± W ± Ag mineralization belts come together (Figure 1b). The deposit represents an unusual example of Mo-polymetallic mineralization dominated by abundant Mo-Pb-Zn with minor Ag-Cu mineralization. The polymetallic features of the Dongbulage deposit represent a change in the style of mineralization characteristics between the Sn...

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“…According to Zhu et al (2004Zhu et al ( , 2006, the Meng'entaolegai deposit is a magmatic hydrothermal deposit genetically connected with Early Yanshanian magmatic activities.…”

Section: Dulong Sn-zn Depositmentioning

confidence: 99%

In, Sn, Pb and Zn Contents and Their Relationships in Ore‐forming Fluids from Some In‐rich and In‐poor Deposits in China

Zhang

Zhu

et al. 2007

Acta Geologica Sinica (Eng)

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All the indium-rich deposits with indium contents in ores more than 1 0 0~1 0~ seems to be of cassiterite-sulfide deposits or Sn-bearing Pb-Zn deposits, e.g., in the Dachang Sn deposit in Guangxi, the Dulong Sn-Zn deposit in Yunnan, and the Meng'entaolegai Ag-Pb-Zn deposit in Inner Mongolia, the indium contents in ores range from 9 8~1 0~ to 2 3 6~1 0~ and show a good positive correlation with contents of zinc and tin, and their correlation coefficients are 0.8781 and 0.7430, respectively. The indium contents from such Sn-poor deposits as the Fozichong Pb-Zn deposit in Guangxi and the Huanren Pb-Zn deposit in Liaoning are generally lower than 10x104, i.e., whether tin is present or not in a deposit implies the enrichment extent of indium in ores. Whether the In enrichment itself in the ore -forming fluids or the ore-forming conditions has actually caused the enrichment/depletion of indium in the deposits? After studying the fluid inclusions in quartz crystallized at the main stage of mineralization of several In-rich and In-poor deposits in China, this paper analyzed the contents and studied the variation trend of In, Sn, Pb and Zn in the ore-forming fluids. The results show that the contents of lead and zinc in the ore-forming fluids of In-rich and -poor deposits are at the same level, and the lead contents range from 2 2~1 0~ to 8 1~1 0~ and zinc from 1 6 4~1 0~ to 309x10", while the contents of indium and tin in the ore-forming fluids of In-rich deposits are far higher than those of Inpoor deposits, with a difference of 1-2 orders of magnitude. Indium and tin contents in ore-forming fluid of In-rich deposits are 1.9x104-4.1x104 and 7x104-55x104, and there is a very good positive correlation between the two elements, with a correlation coefficient of 0.9552. Indium and tin contents in ore-forming fluid of In-poor deposits are 0.03x10-6-0.09x104 and 0 . 4~1 0~-2 . 0~1 0~, respectively, and there is no apparent correlation between them. This indicates, on one hand, that In-rich oreforming fluids are the material basis for the formation of In-rich deposits, and, on the other hand, tin probably played a very important role in the transport and enrichment of indium.

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Hydrothermal source rocks of the Meng'entaolegai Ag-Pb-Zn deposit in the granite batholith, Inner Mongolia, China: Constrained by isotopic geochemistry

Cited by 29 publications

References 13 publications

The source of Fengjia and Langxi barite–fluorite deposits in southeastern Sichuan, China: evidence from rare earth elements and S, Sr, and Sm–Nd isotopic data

The source of Fengjia and Langxi barite–fluorite deposits in southeastern Sichuan, China: evidence from rare earth elements and S, Sr, and Sm–Nd isotopic data

Geochronology of Magmatism and Mineralization in the Dongbulage Mo-Polymetallic Deposit, Northeast China: Implications for the Timing of Mineralization and Ore Genesis

In, Sn, Pb and Zn Contents and Their Relationships in Ore‐forming Fluids from Some In‐rich and In‐poor Deposits in China

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