Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type
Mississippi Valley Type (MVT)1 deposits represent the majority of carbonate-hosted Zn–Pb deposits globally. They typically form in an extensional tectonic setting along passive margins. However, studies on carbonate-hosted Zn–Pb deposits in the Sichuan–Yunnan–Guizhou Triangle area (SYGT) reveal diff...
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Frontiers Media S.A.
2023-03-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1136397/full |
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| author | Han Runsheng Zhang Yan Qiu Wenlong Ding Tianzhu Wang Mingzhi Wang Feng |
| author_facet | Han Runsheng Zhang Yan Qiu Wenlong Ding Tianzhu Wang Mingzhi Wang Feng |
| author_sort | Han Runsheng |
| collection | DOAJ |
| description | Mississippi Valley Type (MVT)1 deposits represent the majority of carbonate-hosted Zn–Pb deposits globally. They typically form in an extensional tectonic setting along passive margins. However, studies on carbonate-hosted Zn–Pb deposits in the Sichuan–Yunnan–Guizhou Triangle area (SYGT) reveal differences in terms of the essential features of typical MVT deposits. We discuss the main features of these deposits, controlled by folds and faults, high-grade Zn–Pb ores and symbiotic or associated elements (i.e., abundant Ag and dispersed amounts of Ge, Ga, and Cd) of significant economic value. Based on a comparison of Pb-Zn deposits in SYGT and classical MVT deposits formed in an extensional tectonic setting, as well as a subsequent discussion on deposit classification, we propose that the Huize-style Zn–Pb deposits are a new deposit style, whose basic features can guide future ore exploration. We define the Huize-style deposits based on four factors: i) Hierarchical ore-controlling system of strike-slip fault-fold structures, ii) litho-facies associated with typical alternation and mineralisation, iii) ore-forming geochemical features revealed by typical mineral assemblages, mineralisation alteration zoning, fluid-inclusion, isotope geochemistry and metallogenic acid–alkali geochemical barriers, and iv) different prospecting methods to those typically used for MVT deposits. The Huize-style and typical MVT deposits constitute the carbonate-hosted non-magmatic epigenetic hydrothermal-type (CNHT) Zn–Pb deposits. |
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| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T00:14:26Z |
| publishDate | 2023-03-01 |
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| spelling | doaj.art-6f279d5b582149c3ad47521c74dcc8c62023-03-16T05:53:46ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-03-011110.3389/feart.2023.11363971136397Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new typeHan Runsheng0Zhang Yan1Qiu Wenlong2Ding Tianzhu3Wang Mingzhi4Wang Feng5Kunming University of Science and Technology, Southwest of Geological Survey, Geological Survey Center for Non-ferrous Mineral Resources, Kunming, ChinaKunming University of Science and Technology, Southwest of Geological Survey, Geological Survey Center for Non-ferrous Mineral Resources, Kunming, ChinaKunming University of Science and Technology, Southwest of Geological Survey, Geological Survey Center for Non-ferrous Mineral Resources, Kunming, ChinaSichuan Huidong Daliang Mining Co., Ltd., Huidong, ChinaKunming University of Science and Technology, Southwest of Geological Survey, Geological Survey Center for Non-ferrous Mineral Resources, Kunming, ChinaYunnan Metallurgy Resources Exploration Co., Ltd., Kunming, ChinaMississippi Valley Type (MVT)1 deposits represent the majority of carbonate-hosted Zn–Pb deposits globally. They typically form in an extensional tectonic setting along passive margins. However, studies on carbonate-hosted Zn–Pb deposits in the Sichuan–Yunnan–Guizhou Triangle area (SYGT) reveal differences in terms of the essential features of typical MVT deposits. We discuss the main features of these deposits, controlled by folds and faults, high-grade Zn–Pb ores and symbiotic or associated elements (i.e., abundant Ag and dispersed amounts of Ge, Ga, and Cd) of significant economic value. Based on a comparison of Pb-Zn deposits in SYGT and classical MVT deposits formed in an extensional tectonic setting, as well as a subsequent discussion on deposit classification, we propose that the Huize-style Zn–Pb deposits are a new deposit style, whose basic features can guide future ore exploration. We define the Huize-style deposits based on four factors: i) Hierarchical ore-controlling system of strike-slip fault-fold structures, ii) litho-facies associated with typical alternation and mineralisation, iii) ore-forming geochemical features revealed by typical mineral assemblages, mineralisation alteration zoning, fluid-inclusion, isotope geochemistry and metallogenic acid–alkali geochemical barriers, and iv) different prospecting methods to those typically used for MVT deposits. The Huize-style and typical MVT deposits constitute the carbonate-hosted non-magmatic epigenetic hydrothermal-type (CNHT) Zn–Pb deposits.https://www.frontiersin.org/articles/10.3389/feart.2023.1136397/fulltypical geological-geochemical characteristicsrich Ge-Ag-bearing Zn-Pb depositSichuan-Yunnan-Guizhou Triangle area(SYGT)Huize-style depositdeposit classificationnew model |
| spellingShingle | Han Runsheng Zhang Yan Qiu Wenlong Ding Tianzhu Wang Mingzhi Wang Feng Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type Frontiers in Earth Science typical geological-geochemical characteristics rich Ge-Ag-bearing Zn-Pb deposit Sichuan-Yunnan-Guizhou Triangle area(SYGT) Huize-style deposit deposit classification new model |
| title | Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type |
| title_full | Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type |
| title_fullStr | Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type |
| title_full_unstemmed | Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type |
| title_short | Geology and geochemistry of Zn-Pb(-Ge-Ag) deposits in the Sichuan-Yunnan-Guizhou Triangle area, China: A review and a new type |
| title_sort | geology and geochemistry of zn pb ge ag deposits in the sichuan yunnan guizhou triangle area china a review and a new type |
| topic | typical geological-geochemical characteristics rich Ge-Ag-bearing Zn-Pb deposit Sichuan-Yunnan-Guizhou Triangle area(SYGT) Huize-style deposit deposit classification new model |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1136397/full |
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