Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern China
Although numerous W–Sn–Pb–Zn polymetallic deposits are located in southern Hunan, and In-bearing deposits are related to W–Sn–Pb–Zn polymetallic deposits, Indium mineralization in southern Hunan is poorly studied. In order to investigate the In mineralization of the Xianghualing orefield, which is a...
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doaj-f7211226531e4a7eaa35b42c66bdd6d92020-11-24T20:48:01ZengMDPI AGMinerals2075-163X2017-09-017917310.3390/min7090173min7090173Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern ChinaJianping Liu0Yanan Rong1Shugen Zhang2Zhongfa Liu3Weikang Chen4Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Ministry of Education, Changsha 410083, ChinaKey Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Ministry of Education, Changsha 410083, ChinaKey Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Ministry of Education, Changsha 410083, ChinaKey Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Ministry of Education, Changsha 410083, ChinaKey Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Ministry of Education, Changsha 410083, ChinaAlthough numerous W–Sn–Pb–Zn polymetallic deposits are located in southern Hunan, and In-bearing deposits are related to W–Sn–Pb–Zn polymetallic deposits, Indium mineralization in southern Hunan is poorly studied. In order to investigate the In mineralization of the Xianghualing orefield, which is a typical orefield in southern Hunan, ore bulk chemistry, microscopic observation, and electron-probe microanalysis of vein-type (type-I) and porphyry-type (type-II) Sn–Pb–Zn orebodies were studied. The In contents of the type-I orebodies varies from 0.79 to 1680 ppm (avg. 217 ppm, n = 29), and that of the type-II orebodies varies from 10 to 150 ppm (avg. 64 ppm, n = 10). Although chalcopyrite and stannite contain trace amounts of In, sphalerite is the most important In-rich mineral in the orefield. Sphalerite in type-I orebodies contains from <0.02 to 21.96 wt % In, and in type-II orebodies contains from <0.02 to 0.39 wt % In. Indium-rich chemical-zoned sphalerite contains 7 to 8 wt % In in its core and up to 21.96 wt % In in its rim. This sphalerite may be the highest In-bearing variety in Southern China. The Cd contents of the In-rich sphalerite ranges from 0.35 to 0.45 wt %, which places it in the the “Indium window” of the Cu–In–S phases. The geological and structural features of the Xianghualing orefield indicate that the In mineralization of the two types of In-bearing Sn–Pb–Zn orebodies is related to the volatile-rich, In-rich, A-type granites, and is controlled by the normal faults of magmatic-diapiric activity extensional features.https://www.mdpi.com/2075-163X/7/9/173indiumIn-bearing sphaleriteSn-polymetallic depositsXianghualing orefieldsouthern China |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jianping Liu Yanan Rong Shugen Zhang Zhongfa Liu Weikang Chen |
spellingShingle |
Jianping Liu Yanan Rong Shugen Zhang Zhongfa Liu Weikang Chen Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern China Minerals indium In-bearing sphalerite Sn-polymetallic deposits Xianghualing orefield southern China |
author_facet |
Jianping Liu Yanan Rong Shugen Zhang Zhongfa Liu Weikang Chen |
author_sort |
Jianping Liu |
title |
Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern China |
title_short |
Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern China |
title_full |
Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern China |
title_fullStr |
Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern China |
title_full_unstemmed |
Indium Mineralization in the Xianghualing Sn-Polymetallic Orefield in Southern Hunan, Southern China |
title_sort |
indium mineralization in the xianghualing sn-polymetallic orefield in southern hunan, southern china |
publisher |
MDPI AG |
series |
Minerals |
issn |
2075-163X |
publishDate |
2017-09-01 |
description |
Although numerous W–Sn–Pb–Zn polymetallic deposits are located in southern Hunan, and In-bearing deposits are related to W–Sn–Pb–Zn polymetallic deposits, Indium mineralization in southern Hunan is poorly studied. In order to investigate the In mineralization of the Xianghualing orefield, which is a typical orefield in southern Hunan, ore bulk chemistry, microscopic observation, and electron-probe microanalysis of vein-type (type-I) and porphyry-type (type-II) Sn–Pb–Zn orebodies were studied. The In contents of the type-I orebodies varies from 0.79 to 1680 ppm (avg. 217 ppm, n = 29), and that of the type-II orebodies varies from 10 to 150 ppm (avg. 64 ppm, n = 10). Although chalcopyrite and stannite contain trace amounts of In, sphalerite is the most important In-rich mineral in the orefield. Sphalerite in type-I orebodies contains from <0.02 to 21.96 wt % In, and in type-II orebodies contains from <0.02 to 0.39 wt % In. Indium-rich chemical-zoned sphalerite contains 7 to 8 wt % In in its core and up to 21.96 wt % In in its rim. This sphalerite may be the highest In-bearing variety in Southern China. The Cd contents of the In-rich sphalerite ranges from 0.35 to 0.45 wt %, which places it in the the “Indium window” of the Cu–In–S phases. The geological and structural features of the Xianghualing orefield indicate that the In mineralization of the two types of In-bearing Sn–Pb–Zn orebodies is related to the volatile-rich, In-rich, A-type granites, and is controlled by the normal faults of magmatic-diapiric activity extensional features. |
topic |
indium In-bearing sphalerite Sn-polymetallic deposits Xianghualing orefield southern China |
url |
https://www.mdpi.com/2075-163X/7/9/173 |
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