Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning Technology
BACKGROUND As an epigenetic deposit dominated by supergene fluid, a sandstone type uranium deposit has many low-temperature minerals. In recent years, the Pengyang uranium deposit, a deep sandstone type uranium deposit, has been discovered in the southwest edge of the Ordos Basin, China. The deposit...
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| Format: | Article |
| Language: | English |
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Science Press, PR China
2022-09-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202112130202 |
| _version_ | 1797954173478633472 |
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| author | ZHANG Bo SI Qinghong Miao Peisen ZHAO Hualei ZHU Qiang CHEN Yin CHEN Lulu |
| author_facet | ZHANG Bo SI Qinghong Miao Peisen ZHAO Hualei ZHU Qiang CHEN Yin CHEN Lulu |
| author_sort | ZHANG Bo |
| collection | DOAJ |
| description | BACKGROUND As an epigenetic deposit dominated by supergene fluid, a sandstone type uranium deposit has many low-temperature minerals. In recent years, the Pengyang uranium deposit, a deep sandstone type uranium deposit, has been discovered in the southwest edge of the Ordos Basin, China. The deposit has the characteristics of large sand body scale, wide uranium mineralization area, large thickness and high grade. Many low-temperature altered minerals have developed, including calcite, gypsum, pyrite, and clay minerals. It is of great significance to study the spatial distribution characteristics of minerals and their relationship with uranium minerals to identify the main sources and properties of ore-forming fluids and their controlling on uranium mineralization. Near-infrared core spectral scanning technology can identify layered silicate minerals such as kaolinite, montmorillonite, sericite, and sulfate minerals such as gypsum and alunite, and carbonate minerals such as calcite and dolomite. OBJECTIVES To study the distribution characteristics of minerals and their relationship with uranium mineralization. METHODS Core samples were scanned by VNIR-SWIR spectroscopy core scanning system and analyzed by TSG 8.0. In addition, the microscopic occurrence characteristics of minerals related to uranium minerals were observed by scanning electron microscopy. RESULTS Minerals such as kaolinite, montmorillonite, illite, chlorite, carbonate, gypsum, and iron oxide were identified in the Luohe Formation. The mineral assemblage of uranium ore section was "illite+gypsum+carbonate", and minor kaolinite was present locally. CONCLUSIONS The uranium-bearing section of the Luohe Formation is mainly a set of alkaline environments in the sedimentary period. However, there is also an injection of reducing acid fluid in the metallogenic period. |
| first_indexed | 2024-04-10T23:14:29Z |
| format | Article |
| id | doaj.art-75add051b7a04f7393cac4aa597abc7a |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:14:29Z |
| publishDate | 2022-09-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-75add051b7a04f7393cac4aa597abc7a2023-01-13T03:03:33ZengScience Press, PR ChinaYankuang ceshi0254-53572022-09-0141573374310.15898/j.cnki.11-2131/td.202112130202yk202112130202Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning TechnologyZHANG Bo0SI Qinghong1Miao Peisen2ZHAO Hualei3ZHU Qiang4CHEN Yin5CHEN Lulu6Tianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaBACKGROUND As an epigenetic deposit dominated by supergene fluid, a sandstone type uranium deposit has many low-temperature minerals. In recent years, the Pengyang uranium deposit, a deep sandstone type uranium deposit, has been discovered in the southwest edge of the Ordos Basin, China. The deposit has the characteristics of large sand body scale, wide uranium mineralization area, large thickness and high grade. Many low-temperature altered minerals have developed, including calcite, gypsum, pyrite, and clay minerals. It is of great significance to study the spatial distribution characteristics of minerals and their relationship with uranium minerals to identify the main sources and properties of ore-forming fluids and their controlling on uranium mineralization. Near-infrared core spectral scanning technology can identify layered silicate minerals such as kaolinite, montmorillonite, sericite, and sulfate minerals such as gypsum and alunite, and carbonate minerals such as calcite and dolomite. OBJECTIVES To study the distribution characteristics of minerals and their relationship with uranium mineralization. METHODS Core samples were scanned by VNIR-SWIR spectroscopy core scanning system and analyzed by TSG 8.0. In addition, the microscopic occurrence characteristics of minerals related to uranium minerals were observed by scanning electron microscopy. RESULTS Minerals such as kaolinite, montmorillonite, illite, chlorite, carbonate, gypsum, and iron oxide were identified in the Luohe Formation. The mineral assemblage of uranium ore section was "illite+gypsum+carbonate", and minor kaolinite was present locally. CONCLUSIONS The uranium-bearing section of the Luohe Formation is mainly a set of alkaline environments in the sedimentary period. However, there is also an injection of reducing acid fluid in the metallogenic period.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202112130202sandstone type uranium orepengyang uranium depositnear infrared spectrum scanningreflection spectrumscanning electron microscope |
| spellingShingle | ZHANG Bo SI Qinghong Miao Peisen ZHAO Hualei ZHU Qiang CHEN Yin CHEN Lulu Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning Technology Yankuang ceshi sandstone type uranium ore pengyang uranium deposit near infrared spectrum scanning reflection spectrum scanning electron microscope |
| title | Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning Technology |
| title_full | Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning Technology |
| title_fullStr | Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning Technology |
| title_full_unstemmed | Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning Technology |
| title_short | Mineral Distribution Characteristics of the Pengyang Uranium Deposit Based on Near Infrared Core Spectral Scanning Technology |
| title_sort | mineral distribution characteristics of the pengyang uranium deposit based on near infrared core spectral scanning technology |
| topic | sandstone type uranium ore pengyang uranium deposit near infrared spectrum scanning reflection spectrum scanning electron microscope |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202112130202 |
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