Distribution and existing state of indium in the Gejiu Tin polymetallic deposit, Yunnan Province, SW China

Li, Yubang; Tao, Yan; Zhu, Fengxiao; Liao, Mingyang; Xiong, Feng; Deng, Xianze

doi:10.1007/s11631-015-0061-7

Cited by 19 publications

(5 citation statements)

References 17 publications

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“…In contrast, the marble‐hosted‐type Cu–Sn ores and vein‐type Pb–Zn ores have low In contents. The highest In contents in the deposit occur in sphalerite of the porphyry ores (0.27–10.1 wt.% In), and the sphalerite with the highest In content (8.7–10.1 wt.% In) in the porphyry‐type ores represents the highest concentration of In in sphalerite reported in south China (Murakami & Ishihara, ; Li et al , ; Pi et al , ). These sphalerite grains have a high Cu content (Table ), indicating a Cu + + In 3+ ⇔ Zn 2+ substitution processes, similar to that in the Huari Huari deposits in Bolivia (Murakami & Ishihara, ).…”

Section: Discussionmentioning

confidence: 99%

Indium Mineralization in the Yejiwei Sn‐Polymetallic Deposit of the Shizhuyuan Orefield, Southern Hunan, China

Liu

Rong

et al. 2017

Resource Geology

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The Yejiwei deposit, which is located in the southern Hunan W-Sn-Pb-Zn Metallogenic Belt in south China, is a large-scale porphyry-skarn-veinlet-type deposit containing 806 t In. Mineralization occurs as porphyrytype Sn (stockworks), skarn-type Sn-Cu, marble-hosted-type Sn-Cu (veinlet), and vein-type Pb-Zn ores. Thirty-five ore samples were collected from the Yejiwei deposit for bulk and mineral chemical composition, microscopic observation and electron microprobe analyses. The porphyry-type Sn ores contain variable amounts of In (2.3-76 ppm; mean of 17.4 ppm) with local In enrichment (226 ppm) and 1000 × In/Zn values are 3.8-52.4. The skarn-type Cu-Sn ore is richest in In (12.3-214 ppm; mean of 114 ppm), and 1000 × In/Zn values are 2.4-117. In contrast, the In content of the marble-hosted-type Cu-Sn ores is relatively low (7.4-34.9 ppm; mean of 20.3 ppm), and 1000 × In/Zn is in the range of 0.61-5.5, and the vein-type Pb-Zn ores in the external zone contain the lowest In contents (7.2-17.0 ppm; mean of 12.1 ppm) with 1000 × In/ Zn values of 0.07-0.09. The ore minerals in the deposit include pyrite, pyrrhotite, cassiterite, and In-bearing minerals of sphalerite, chalcopyrite, and stannite. Although only trace amounts of sphalerite are hosted in the porphyry ores, the sphalerite contains the highest In content (0.27-10.1 wt.% In) in the deposit. We observed the highest In contents of all In-bearing sphalerite reported in China. The In contents of sphalerite in the skarn-type ore range from 0.15 to 0.56 wt.%, whereas the marble-hosted-, and vein-type ores have lower In contents (0.00-0.04, and 0.03-0.06 wt.%, respectively). The In resources of the Yejiwei deposit are mainly hosted in skarn ores of the No. 31 and No. 32 orebodies. The genesis of In in the Yejiwei deposit was closely related to the shallow intrusive environment of related igneous rocks. As W-Sn-Mo-Bi-Cu-Pb-Zn-Ag mineralization is widespread in south Hunan, this study would suggest a focus on skarn-type Sn-Zn deposits for the future prospecting of In resources.

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Section: Discussionmentioning

confidence: 99%

Indium Mineralization in the Yejiwei Sn‐Polymetallic Deposit of the Shizhuyuan Orefield, Southern Hunan, China

Liu

Rong

et al. 2017

Resource Geology

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“…Indium concentrations in copper-containing sphalerite can vary in the range of 1500 to 10,000 µg/g (e.g., [14,[27][28][29][30]), up to 6-7 wt.% (e.g., [22,28]) or even 15-20 wt.% (e.g., [12,20]).…”

Section: Overview and Motivationmentioning

confidence: 99%

Indium and Antimony Distribution in a Sphalerite from the “Burgstaetter Gangzug” of the Upper Harz Mountains Pb-Zn Mineralization

et al. 2020

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The sphalerite from the Burgstaetter Gangzug, a vein system of the Upper Harz Mountain nearby the town of Clausthal-Zellerfeld, exhibits a very interesting and partly complementary incorporation pattern of Cu, In and Sb, which has not yet been reported for natural sphalerite. A sphalerite specimen was characterized with electron probe micro-analysis (EPMA) and atom probe tomography (APT). Based on the EPMA results and a multilinear regression, a relation expressed as Cu = 0.98In + 1.81Sb + 0.03 can be calculated to describe the correlation between the elements. This indicates, that the incorporation mechanisms of In and Sb in the structure differ substantially. Indium is incorporated with the ratio Cu:In = 1:1 like in roquesite (CuInS2), supporting the coupled substitution mechanism 2Zn2+ → Cu+ + In3+. In contrast, Sb is incorporated with a ratio of Cu:Sb = 1.81:1. APT, which has a much higher spatial resolution indicates a ratio of Cu: Sb = 2.28: 1 in the entire captured volume, which is similar to the ratio calculated by EPMA, yet with inhomogeneities at the nanometer-scale. Analysis of the solute distribution shows two distinct sizes of clusters that are rich in Cu, Sb and Ag.

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“…The Main ignoues rocks outcropped in the area are Longxianggai multiple-intruded pluton and granite porphyry or porphyriticdiorite veins around the mine [19]. Longxianggai pluton, which is formed in three stages, can be divided into intrusive pluton of fine-grained porphyritic biotite granite (96.6±2.5 Ma), the fine-grained biotite granite (94.3±2.2 Ma) and porphyritic biotite granite (93.8±0.84 Ma), in which fine-grained biotite granite and tin polymetallic ore are most closely related [20].…”

Section: Ore Deposit Geologymentioning

confidence: 99%

The Occurrence and Enrichment of Scattered Indium: A Case Study of Dachang Ore Field in Guangxi, China

Pi¹,

Di²,

Xiong³

et al. 2019

EARTH

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The Dachang tin-polymetallic deposit, which is located in the northwestern part of the Guangxi Zhuang Autonomous Region, contains great amounts of indium. But the occurrence and enrichment of indium are rather complex and not yet well understood. In this paper, the Dachang West ore belt (Tongkeng, Gaofeng) sphalerite is taken as the research object. Based on detailed field investigation and indoor microscopic observation of mineral phase, the spatial distribution law, occurrence state and relationship with main metallogenic elements of scattered elements indium were studied by means of high-precision electron probe and plasma mass spectrometry, in order to reveal its enrichment in sphalerite. The study results show that the content of scattered elements indium in the sphalerite of the Tongkeng deposit decreases with the increase of depth, while the Gaofeng deposit remains stable. Indium occurs mainly in the form of isomorphism and enters sphalerite lattice in the form of double substitution of zinc with copper, but does not exclude the possibility of indium being deposited as a sub-microinclusions. On the basis of previous studies, it is inferred that the indium-rich and copper-rich fluids produced by magma crystallization are metasomatic and enriched with the early-formed sphalerite in the late evolution of Granite Magma. The results of this study point the way to mineral processing and the search for scattered elements indium.

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Distribution and existing state of indium in the Gejiu Tin polymetallic deposit, Yunnan Province, SW China

Cited by 19 publications

References 17 publications

Indium Mineralization in the Yejiwei Sn‐Polymetallic Deposit of the Shizhuyuan Orefield, Southern Hunan, China

Indium Mineralization in the Yejiwei Sn‐Polymetallic Deposit of the Shizhuyuan Orefield, Southern Hunan, China

Indium and Antimony Distribution in a Sphalerite from the “Burgstaetter Gangzug” of the Upper Harz Mountains Pb-Zn Mineralization

The Occurrence and Enrichment of Scattered Indium: A Case Study of Dachang Ore Field in Guangxi, China

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