Geochemical constraints on Cu–Fe and Fe skarn deposits in the Edong district, Middle–Lower Yangtze River metallogenic belt, China

Xie, Ganquan; Mao, Jingwen; Zhu, Qiaoqiao; Yao, Lei; Li, Yanhe; Li, Wei; Zhao, Hongying

doi:10.1016/j.oregeorev.2014.08.005

Cited by 98 publications

(18 citation statements)

References 46 publications

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“…Tonglushan and Tieshan (Fig. 2) in the Edong ore district, for example, have reserves of 1.1 Mt of Cu at an average grade of 1.78% and 56.8 Mt of Fe ores, and 0.67 Mt of Cu at an average grade of 0.57% and 160 Mt of Fe ores, respectively (Xie et al, 2015). In addition, there have been a few exceptions with the important Fe skarn deposits in the Edongnan region (Figs.…”

Section: Fe±cu Depositsmentioning

confidence: 98%

“…In addition, some hydrothermal Au, Tl and Sr deposits, and copious sedimentary gypsum deposits ( Fig. 1) have been discovered and recognized (Fan et al, 2014;Zhou et al, 2014;Xie et al, 2015Xie et al, , 2017Zhu et al, 2015;Duan et al, 2018), but their genesis is poorly constrained. Recently, a metallogenic model of intracontinental porphyry-skarn Cu polymetallic deposits in the MLYRB was discussed and reviewed (Zhou et al, 2015).…”

Section: Geological Backgroundmentioning

confidence: 99%

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Mineral Deposit Model of Cu–Fe–Au Skarn System in the Edongnan Region, Eastern China

Xie

Mao

Zhu

et al. 2020

Acta Geologica Sinica (Eng)

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Cu and Fe skarns are the world's most abundant and largest skarn type deposits, especially in China, and Au‐rich skarn deposits have received much attention in the past two decades and yet there are few papers focused on schematic mineral deposit models of Cu–Fe–Au skarn systems. Three types of Au‐rich deposits are recognized in the Edongnan region, Middle–Lower Yangtze River metallogenic belt: ∼140 Ma Cu–Au and Au–Cu skarn deposits and distal Au–Tl deposits. 137–148 Ma Cu–Fe and 130–133 Ma Fe skarn deposits are recognized in the Edongnan region. The Cu–Fe skarn deposits have a greater contribution of mantle components than the Fe skarn deposits, and the hydrothermal fluids responsible for formation of the Fe skarn deposits involved a greater contribution from evaporitic sedimentary rocks compared to Cu–Fe skarn deposits. The carbonate‐hosted Au–Tl deposits in the Edongnan region are interpreted as distal products of Cu–Au skarn mineralization. A new schematic mineral deposit model of the Cu–Fe–Au skarn system is proposed to illustrate the relationship between the Cu–Fe–Au skarn mineralization, the evaporitic sedimentary rocks, and distal Au–Tl deposits. This model has important implications for the exploration for carbonate–hosted Au–Tl deposits in the more distal parts of Cu–Au skarn systems, and Fe skarn deposits with the occurrence of gypsum‐bearing host sedimentary rocks in the MLYRB, and possibly elsewhere.

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Section: Fe±cu Depositsmentioning

confidence: 98%

Section: Geological Backgroundmentioning

confidence: 99%

Mineral Deposit Model of Cu–Fe–Au Skarn System in the Edongnan Region, Eastern China

Xie

Mao

Zhu

et al. 2020

Acta Geologica Sinica (Eng)

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“…The Middle-Lower Yangtze River Belt (MLYRB) is a well-known metallogenic belt in eastern China that contains more than 200 polymetallic Cu-Fe-Au-Mo deposits. It hosts seven large-scale ore-cluster regions from northeast to southwest: Ningzhen (Cu, Fe, Pb, Zn), Ningwu (Fe), Tongling (Cu, Au, Pb, Zn), Luzong (Fe, Cu), Anqing-Guichi (Cu, Fe), Jiurui (Cu, Au), and E'dong (Fe, Cu) [11][12][13][14][15][16][17][18]. Among them, the Tongling ore-cluster region has high economic value with a high degree of geological exploration and intense studies ( [19][20][21][22][23][24][25][26][27][28][29]; Figure 1a), and it is the birthplace of the theory of "stratabound skarn deposit" [11].…”

Section: Introductionmentioning

confidence: 99%

Geochemical Study of Cretaceous Magmatic Rocks and Related Ores of the Hucunnan Cu–Mo Deposit: Implications for Petrogenesis and Poly-Metal Mineralization in the Tongling Ore-Cluster Region

Yang

et al. 2020

Minerals

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The Hucunnan porphyry- and skarn-type Cu–Mo deposit is located in the south of the central Shizishan ore field of the Tongling ore-cluster region. The intrusive Hucunnan granodiorite, outcropping in this deposit, has adakitic geochemical features, and its magma is proposed to have originated from partial melting of the oceanic crust mixed with mantle-derived materials. The porphyry-type orebody is hosted in the granodiorite, whereas the skarn-type orebody occurs in the contact zones of intrusions and country rocks. The δ34S values of pyrite from the skarn orebodies ranged from +3.9 to +4.7‰ (avg. +4.3‰, n = 6), while those of the porphyry orebodies ranged from +5.1 to +6.2‰ (avg. +5.6‰, n = 4). 208Pb/204Pb, 207Pb/204Pb, and 206Pb/204Pb ratios of the pyrites from the skarn orebodies were 38.04–38.45 (avg. 38.26), 15.55–15.66 (avg. 15.59), and 18.16–18.54 (avg. 18.44), respectively (n = 6). The pyrites in the porphyry orebodies had 208Pb/204Pb, 207Pb/204Pb, and 206Pb/204Pb ratios of 38.24–38.36, 15.51–15.662, and 18.10–18.41, respectively (avg. 38.32, 15.58, 18.22; n = 4), respectively. The metallogenic model ages from Re–Os isotopic dating were 138.7 ± 1.9 and 140.0 ± 2.8 Ma, respectively. Geochemical data indicate that the ore-forming fluids in the skarn stage are characterized by high temperature, low acidity, and high oxygen fugacity, and the ore-forming materials were mainly from magma and partly from stratum, proving that the skarn orebody has more stratum materials than the porphyry orebody.

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“…The Middle‐Lower Yangtze River Metallogenic Belt is one of the most important ore belts in China, and includes several ore concentrated districts (Chang, Liu & Wu, ; Mao et al., , ; Pan & Dong, ; Li et al, ; Xie et al., ; Zhai et al., ). The Edong (SE Hubei Province) ore district (Figure ) is located within the westernmost part of this belt.…”

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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Geochemical constraints on Cu–Fe and Fe skarn deposits in the Edong district, Middle–Lower Yangtze River metallogenic belt, China

Cited by 98 publications

References 46 publications

Mineral Deposit Model of Cu–Fe–Au Skarn System in the Edongnan Region, Eastern China

Mineral Deposit Model of Cu–Fe–Au Skarn System in the Edongnan Region, Eastern China

Geochemical Study of Cretaceous Magmatic Rocks and Related Ores of the Hucunnan Cu–Mo Deposit: Implications for Petrogenesis and Poly-Metal Mineralization in the Tongling Ore-Cluster Region

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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