The geological significance of Pb–Bi- and Pb–Sb-sulphosalts in the Damajianshan tungsten polymetallic deposit, Yunnan Province, China

Zhang, Lei; Wen, Hao; Qin, Chao-Jian; Du, Shanyi; Zhu, Chen; Fan, Haifeng; Zhang, Jinrang

doi:10.1016/j.oregeorev.2015.05.017

Cited by 9 publications

(11 citation statements)

References 45 publications

(39 reference statements)

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“…Our petrographic evidence shows that the Sb-Bi minerals were formed during the late stages of magmatic hydrothermal evolution. This situation is consistent with studies on other Sb-Bi mineral-bearing deposits [7]. In addition, Sb-Bi alloys are not intergrown with bismuthinite, unnamed BiS, or native bismuth in the Jialong deposit, which implies that Sb-Bi alloys and native bismuth were formed at different times.…”

Section: Formation Of Sb-bi Alloys and Sulphosalts During Mineralisationsupporting

confidence: 90%

“…Native bismuth is widely distributed in various deposits, e.g., W-Sn deposits [7,16,27,28], Pb-Zn deposits [29][30][31], and Au deposits [4,[32][33][34][35][36]. On the other hand, native Sb is less common and occurs mostly in Au-Sb or Au deposits [37][38][39][40], and in trace amounts in Pb-Zn deposits [41,42] and Sn-polymetallic deposits [43].…”

Section: Compositional Variations Of the Sb-bi Alloysmentioning

confidence: 99%

“…Bi and Sb are group V elements in the periodic table and occur within a range of sulphosalt minerals [2]. The complex substitution mechanisms of sulphosalts [3,4] are of particular geological interest for what they can reveal about the physico-chemical conditions of mineral formation [5][6][7][8][9]. Metallic Bi minerals include native bismuth, with some Pd-Bi (e.g., froodite PdBi 2 , [10,11]) and Au-Bi (e.g., maldonite Au 2 Bi, and Au 0.53 Bi 0.47 [12]) alloys.…”

Section: Introductionmentioning

confidence: 99%

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Sb-Bi Alloys and Ag-Cu-Pb-Sb-Bi Sulphosalts in the Jialong Cu-Sn Deposit in North Guangxi, South China

2018

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Abstract:Although native bismuth is a relatively common mineral, native antimony is less abundant, and Sb-Bi alloys are relatively rare phases in Nature. Sb-Bi alloys and Ag-Cu-Pb-Sb-Bi sulphosalts have been discovered in the Jialong vein-type Cu-Sn deposit in North Guangxi, South China. The Jialong deposit is hosted by schist within the contact zone of a Neoproterozoic granite. Four stages of ore formation are recognised, with the Sb-Bi alloy-and sulphosalt-bearing assemblage formed during the third stage. Sulphosalts include Pb-Bi-Ag sulphosalts (pavonite), Sb-Bi sulphosalts (tintinaite, terrywallaceite), and Sb sulphosalt (ullmanite, freibergite, bournonite). Grains of Sb-Bi alloy measure 2-20 µm in diameter, show rounded margins and occur together with galena along the edges or internal fissures of sulphosalts. The Sb-Bi alloys do not coexist with bismuthinite, BiS (an unnamed mineral), or with native bismuth. Two phases of Sb-Bi alloys are identified based on back-scattered electron image observations and electron microprobe analysis. The textural and thermodynamic relationships indicate that Phase I was formed before Phase II. Phase I contains high Sb (69.15-80.12 wt %) and lower Bi (18.01-27.85 wt %), while Phase II contains low Sb (0.89-25.24 wt %) and high . Cooling in the range of 270-400 • C and decreasing sulphur fugacity promote precipitation of Sb-Bi alloys and sulphosalts during the late stage of incursion of Sb-and Bi-bearing magmatic hydrothermal fluids.

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Section: Formation Of Sb-bi Alloys and Sulphosalts During Mineralisationsupporting

confidence: 90%

Section: Compositional Variations Of the Sb-bi Alloysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sb-Bi Alloys and Ag-Cu-Pb-Sb-Bi Sulphosalts in the Jialong Cu-Sn Deposit in North Guangxi, South China

2018

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“…The Bi-richest izoklakeite found so far was identified from Otome mine (Ozawa et al 1998) with Bi/(Sb + Bi) ratio of 0.68, whereas the and opening of the ore district in the second half of the 13 th century until the end of large-scale mining in the first half of 17 th century. (1986), Zakrzewski and Makovicky (1986), Moëlo et al (1995), Ozawa et al (1998), Orlandi et al (2010) and Zhang et al (2015); for giessenite from Karup-Møller (1973), Graeser and Harris (1986), and Makovicky and Karup-Møller (1986).…”

Section: The Bi and Bi-sb Sulphosalts And Their Chemical And Structurmentioning

confidence: 99%

“…Comparable contents of Bi in boulangerite are rare worldwide, but they are known e.g. from the Srednegolgota deposit, Transbaikalia (Bortnikov and Tsepin 1987), Apollo mine, Germany (Wagner and Cook 1996) or the Damajianshan deposit, China (Zhang et al 2015).…”

Section: Bi-rich Boulangeritementioning

confidence: 99%

Bismuth and bismuth-antimony sulphosalts from Kutná Hora vein Ag-Pb-Zn ore district, Czech Republic

Pažout¹,

Sejkora²,

Šrein³

2017

Jour. Geosci.

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A new, previously unknown association of Pb-Bi-Sb-Ag sulphosalt minerals has been found in samples from mine dumps of the Staročeské pásmo Lode of the Kutná Hora Ag-Pb-Zn ore district, central Bohemia, Czech Republic. These minerals form polymineral aggregates up to 1-3 cm in quartz or base sulphides. Apart from numerous members of lillianite homologous series, new occurrences of aramayoite, bismuthinite, cosalite, ikunolite, izoklakeite, matildite, galena ss , Bi-rich jamesonite, Bi-rich boulangerite, Bi-rich owyheeite and Bi-rich semseyite have been identified. An extraordinary extent of the Bi-Sb substitution is characteristic of the studied association. Bi-rich mineralization of this scope has not been previously known from the Kutná Hora ore district. The origin of this sulphosalt mineralization is related to the penetration of lower temperature fluids (c. 100-250 °C) into tectonically opened fractures in older ore veins filling. Virtually no mobilization of elements from the earlier vein filling took place; hydrothermal fluids must have been relatively rich in Ag and Pb and simultaneously poor in Cu. High Bi content was characteristic of the initial stage of the mineralization. Gradually, the Bi/Sb ratio decreased considerably with more Sb-rich minerals originating. At the final stage, Bi-rich Pb-Sb sulphosalts with lower Ag contents crystallized.

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Genetic implications for the Damajianshan W‐Cu‐As polymetallic deposit in Lvchun, Southwest China: Constraints from H–O, He–Ar, S, and Pb isotopes

Zhang

Wen

et al. 2018

Geological Journal

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The Sanjiang Tethyan domain in SE Asia is one of the most important mineral belts in China. The Damajianshan (DMJS) W‐Cu‐As polymetallic deposit is located in the southern part of Sanjiang Tethyan domain, related to Triassic quartz porphyry. Detailed exploration thereafter shows that the reserves of W, Cu, and As are 0.09, 0.42, and 0.12 Mt, respectively. The W is a typical oxyphile element and always coexisted with Sn–Li–Be–Nb–Ta. The Cu–As are typical sulphophile elements and always coexisted with Au–Ag–Pb–Zn–Sb–Hg. It is rarely reported that a deposit preserves tungsten and copper–arsenic simultaneously in the southern Sanjiang region. In this study, the S–Pb isotopic ratios of sulphides, the H–O isotopic compositions of fluid inclusions in hydrothermal quartz, and the He–Ar isotopic ratios of fluid inclusions in sulphides were analysed to constrain the origin of the DMJS deposit. Studies have shown that the δ34S values of sulphides from ores are mainly between −6.17‰ and +0.02‰; the sulphur isotope compositions indicate that the ore‐forming materials might originate from deep sources. The Pb isotope characteristics indicate that the ore metals might originate from deep sources and be closely related to the quartz porphyry. The δ18Ofluid values of ore‐forming fluids calculated from hydrothermal quartz range from −5.5‰ to +7.5‰, and the δD values of the fluid inclusions in quartz are from −81.7‰ to −50.2‰. The H–O isotope systematics indicate that the ore fluids in the DMJS deposit were probably initially sourced from magmatic water and later gradually mixed with Mesozoic meteoric water. Fluid inclusions in pyrite, chalcopyrite, arsenopyrite, and pyrrhotite possess 3He/4He ratios of 0.02–0.05 Ra, and their 40Ar/36Ar ratios range from 562.47 to 4159.15, indicating a complete crustal fluids and with higher radiogenic 40Ar. The noble gas isotopic data, along with the stable isotopic data, suggest that the ore‐forming fluids have a deep source. The unique geologic structure of the Sanjiang Tethys tectonic metallogenic region and the evolution of ore‐forming fluids both promoted the formation of this rare DMJS deposit.

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The geological significance of Pb–Bi- and Pb–Sb-sulphosalts in the Damajianshan tungsten polymetallic deposit, Yunnan Province, China

Cited by 9 publications

References 45 publications

Sb-Bi Alloys and Ag-Cu-Pb-Sb-Bi Sulphosalts in the Jialong Cu-Sn Deposit in North Guangxi, South China

Sb-Bi Alloys and Ag-Cu-Pb-Sb-Bi Sulphosalts in the Jialong Cu-Sn Deposit in North Guangxi, South China

Bismuth and bismuth-antimony sulphosalts from Kutná Hora vein Ag-Pb-Zn ore district, Czech Republic

Genetic implications for the Damajianshan W‐Cu‐As polymetallic deposit in Lvchun, Southwest China: Constraints from H–O, He–Ar, S, and Pb isotopes

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