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- Title
川西甲基卡锂矿基地典型岩石及矿物反射波谱特征研究.
- Authors
代晶晶; 王登红; 代鸿章; 刘丽君; 令天宇
- Abstract
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) Field Spec - 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 indicated that there were differences in spectral characteristics between rock masses and surrounding rocks. The reflectance of surrounding rocks was less than 0.2, and absorption characteristics were not obvious, whereas the reflectance of rock masses was less than 0.5, and there were 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 hyperspeetral remote sensing mapping and geological prospecting.
- Publication
Rock & Mineral Analysis, 2018, Vol 37, Issue 5, p507
- ISSN
0254-5357
- Publication type
Article
- DOI
10.15898/j.cnki.11-2131/td.201701110003