Mineralogical and sulfur isotopic evidence for the incursion of evaporites in the Jinshandian skarn Fe deposit, Edong district, Eastern China

Zhu, Qiaoqiao; Xie, Guiqing; Mao, Jingwen; Li, Wei; Li, Yanhe; Wang, Jian; Zhang, Ping

doi:10.1016/j.jseaes.2015.05.022

Cited by 28 publications

(9 citation statements)

References 72 publications

(116 reference statements)

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“…In addition, the epidotizaton, tourmalinization, and sericitization of the deposit all occurred during the metallogenic period. In the case of IOCG deposits, these types of alterations mostly occur before the metallogenic period [56,58,59]. To summarize, we believe that the Huanggangliang deposit is a skarn-type Sn-Fe deposit whose genesis is related to Yanshanian medium-acidic magmatic activities.…”

Section: Indications For the Genesis Of The Depositmentioning

confidence: 81%

Trace Element Geochemistry of Magnetite: Implications for Ore Genesis of the Huanggangliang Sn-Fe Deposit, Inner Mongolia, Northeastern China

et al. 2018

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The Huanggangliang deposit is a super-large Sn-Fe deposit in the Huanggangliang-Ganzhuermiao metallogenic belt in the southern section of the Great Hinggan Range. The Sn-Fe deposits mainly occur in the skarn contact zone and were formed via the interaction of biotite-bearing alkali feldspar granite with limestone strata of the Permian Dashizhai and Zhesi Formations. Based on the intersecting relations among the ore-bearing veins and the different types of mineral assemblages within these veins, the Sn-Fe mineralization could be divided into two periods and four stages: the skarn period, which includes the garnet-diopside-magnetite (T1) stage (stage 1) and epidote-idocrase-cassiterite-magnetite (T2) stage (stage 2); and the quartz-magnetite period, which can be divided into the quartz-cassiterite-magnetite (T3) stage (stage 3) and quartz-magnetite (T4) stage (stage 4). In this paper, we discuss the genesis of magnetite, controlling factors for magnetite compositions, and type of ore genesis based on petrographic studies and LA-ICP-MS analyses of trace elements in these four types of magnetite from the Huanggangliang Sn-Fe deposit. The results demonstrate that the four types of magnetite are generally depleted in Ti (0.002-3.030 wt %), Al (0.008-1.731 wt %), and Zr (<1.610 ppm). In addition, the low Ni and Cr contents and relatively high and stable Fe contents in the four types of magnetite are indicative of hydrothermal genetic features. Compositions of the ore fluids and host rocks, formation of coexisting minerals, and other physical and chemical parameters (such as f O 2) may have influenced the variable magnetite geochemistry in the different Huanggangliang ore types, with fluid compositions and f O 2 probably playing the most important roles. The geological, petrographic, and geochemical characteristics of magnetite of the Huanggangliang Sn-Fe deposit lead us to conclude that the deposit is a skarn-type Sn-Fe deposit associated with Yanshanian medium-acidic magmatic activities.

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Section: Indications For the Genesis Of The Depositmentioning

confidence: 81%

Trace Element Geochemistry of Magnetite: Implications for Ore Genesis of the Huanggangliang Sn-Fe Deposit, Inner Mongolia, Northeastern China

et al. 2018

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“…Halogen-rich scapolite intergrown with magnetite (Figs. 9d-e) shows high Cl content of up to 4.04 %, suggesting that the hydrothermal fluid with high NaCl content was probably derived from evaporites before or during the late prograde stage (Zhu et al, 2015). Sulfur isotopic compositions are markedly different between the Cu-Fe and Fe skarn deposits in the Edongnan region ( Fig.…”

Section: Fe±cu Depositsmentioning

confidence: 95%

“…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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“…Next, the samples were dropped onto a reduction column and combusted at 1020°C. Water was removed using a 10-cm column packed with magnesium perchlorate, and SO 2 was separated from the other components using a 0.8-m polytetrafluoroethylene (PTFE) gas chromatography (GC) column (PN 260 070 80; Thermo Fisher Scientific) heated to 90°C; SO 2 was then passed into the mass spectrometer [40,41]. The results are expressed in standard delta notation as per mille deviations relative to Vienna-Canyon Diablo Troilite (V-CDT), and the external precision was typically better than 0.2‰ for d 34 S.…”

Section: S Isotope Composition Analysismentioning

confidence: 99%

Coupled Fe–S isotope composition of sulfide chimneys dominated by temperature heterogeneity in seafloor hydrothermal systems

et al. 2020

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Mineralogical and sulfur isotopic evidence for the incursion of evaporites in the Jinshandian skarn Fe deposit, Edong district, Eastern China

Cited by 28 publications

References 72 publications

Trace Element Geochemistry of Magnetite: Implications for Ore Genesis of the Huanggangliang Sn-Fe Deposit, Inner Mongolia, Northeastern China

Trace Element Geochemistry of Magnetite: Implications for Ore Genesis of the Huanggangliang Sn-Fe Deposit, Inner Mongolia, Northeastern China

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

Coupled Fe–S isotope composition of sulfide chimneys dominated by temperature heterogeneity in seafloor hydrothermal systems

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