Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan
BACKGROUND The Sichuan Jiajika ore field is one of the most concentrated areas of lithium resources in China and even in the world. At present, the understanding of the spectroscopy of the Jiajika lithium deposit is still very poor. OBJECTIVES To better understand the spectra of lithium ore deposits...
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| Format: | Article |
| Language: | English |
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Science Press, PR China
2018-09-01
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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.201701110003 |
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| author | DAI Jing-jing WANG Deng-hong DAI Hong-zhang LIU Li-jun LING Tian-yu |
| author_facet | DAI Jing-jing WANG Deng-hong DAI Hong-zhang LIU Li-jun LING Tian-yu |
| author_sort | DAI Jing-jing |
| collection | DOAJ |
| description | BACKGROUND The Sichuan Jiajika ore field is one of the most concentrated areas of lithium resources in China and even in the world. At present, the understanding of the spectroscopy of the Jiajika lithium deposit is still very poor. OBJECTIVES To better understand the spectra of lithium ore deposits and provide the basis for hyperspectral study of lithium ore deposits by spectrum measurement of typical rocks. METHODS Spectra of typical rocks and minerals collected in Jiajika area were measured by Analytical Spectral Devices (ASD) FieldSpec-4 Spectroradiometer and a spectral library of this area was built. The spectral characteristics of rocks and minerals including biotite schist, grenatiteschist, grenatite cordieriteschist, hornstone, granite, pegmatite containing spodumene, pegmatite without spodumene, quartz vein, feldspar, spodumenemono, biotite, aquamarine were analyzed. RESULTS The results indicate that there are differences in spectral characteristics between rock masses and surrounding rocks. The reflectance of surrounding rocks is less than 0.2, and absorption characteristics are not obvious, whereas the reflectance of rock masses is less than 0.5, and there are three absorption features at 1413 nm, 1911 nm, 2197 nm. In addition, granite, pegmatite containing spodumene, and pegmatite without spodumene can be discriminated by their unique spectra on 1413 nm and 2197 nm. The unique spectral characteristics of spodumene and aquamarine can be applied for ore exploration. CONCLUSIONS The research on the surface spectroscopy of the Jiajika type lithium ore deposit carried out in this paper has important guiding significance for hyperspectral remote sensing mapping and geological prospecting. |
| first_indexed | 2024-04-10T23:08:08Z |
| format | Article |
| id | doaj.art-ac9577b580234210b19a0a5368993e92 |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:08:08Z |
| publishDate | 2018-09-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-ac9577b580234210b19a0a5368993e922023-01-13T10:09:20ZengScience Press, PR ChinaYankuang ceshi0254-53572018-09-0137550751710.15898/j.cnki.11-2131/td.201701110003ykcs-37-5-507Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West SichuanDAI Jing-jing0WANG Deng-hong1DAI Hong-zhang2LIU Li-jun3LING Tian-yu4Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Natural Resources; Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, ChinaKey Laboratory of Metallogeny and Mineral Assessment, Ministry of Natural Resources; Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, ChinaKey Laboratory of Metallogeny and Mineral Assessment, Ministry of Natural Resources; Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, ChinaSchool of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, ChinaSchool of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, ChinaBACKGROUND The Sichuan Jiajika ore field is one of the most concentrated areas of lithium resources in China and even in the world. At present, the understanding of the spectroscopy of the Jiajika lithium deposit is still very poor. OBJECTIVES To better understand the spectra of lithium ore deposits and provide the basis for hyperspectral study of lithium ore deposits by spectrum measurement of typical rocks. METHODS Spectra of typical rocks and minerals collected in Jiajika area were measured by Analytical Spectral Devices (ASD) FieldSpec-4 Spectroradiometer and a spectral library of this area was built. The spectral characteristics of rocks and minerals including biotite schist, grenatiteschist, grenatite cordieriteschist, hornstone, granite, pegmatite containing spodumene, pegmatite without spodumene, quartz vein, feldspar, spodumenemono, biotite, aquamarine were analyzed. RESULTS The results indicate that there are differences in spectral characteristics between rock masses and surrounding rocks. The reflectance of surrounding rocks is less than 0.2, and absorption characteristics are not obvious, whereas the reflectance of rock masses is less than 0.5, and there are three absorption features at 1413 nm, 1911 nm, 2197 nm. In addition, granite, pegmatite containing spodumene, and pegmatite without spodumene can be discriminated by their unique spectra on 1413 nm and 2197 nm. The unique spectral characteristics of spodumene and aquamarine can be applied for ore exploration. CONCLUSIONS The research on the surface spectroscopy of the Jiajika type lithium ore deposit carried out in this paper has important guiding significance for hyperspectral remote sensing mapping and geological prospecting.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201701110003jiajikatypical rocks and mineralsground-object spectrometerspectrum measurement |
| spellingShingle | DAI Jing-jing WANG Deng-hong DAI Hong-zhang LIU Li-jun LING Tian-yu Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan Yankuang ceshi jiajika typical rocks and minerals ground-object spectrometer spectrum measurement |
| title | Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan |
| title_full | Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan |
| title_fullStr | Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan |
| title_full_unstemmed | Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan |
| title_short | Reflectance Spectral Characteristics of Rocks and Minerals in Jiajika Lithium Deposits in West Sichuan |
| title_sort | reflectance spectral characteristics of rocks and minerals in jiajika lithium deposits in west sichuan |
| topic | jiajika typical rocks and minerals ground-object spectrometer spectrum measurement |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201701110003 |
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