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| 新疆可可托海稀有金属矿床矿物和岩石热红外光谱特征 | |
| 引用本文： | 回广骥,高卿楠,宋利强,孙东询.新疆可可托海稀有金属矿床矿物和岩石热红外光谱特征[J].岩矿测试,2021(1):134-144. |
| 作者姓名： | 回广骥 高卿楠 宋利强 孙东询 |
| 作者单位： | 中国地质调查局自然资源实物地质资料中心, 河北 三河 065201 |
| 基金项目： | 中国地质调查局地质调查项目“实物地质资料汇集与服务”（DD20190411） |
| 摘 要： | 当前新型材料、新能源在各个领域应用不断深化,稀有金属矿床迎来了世界范围内的研究与勘探热潮。新疆可可托海稀有金属矿床是我国最早开发利用稀有金属矿产资源的重要基地,但对其典型矿物和围岩的热红外反射光谱的认识还很缺乏,制约了对同类型矿床开展遥感地质调查和遥感地质学研究工作的推进。本文采用便携式热红外光谱仪,对可可托海3号脉的典型矿物岩石开展热红外光谱特征研究。结果表明:热红外光谱可以有效识别锂辉石、锂云母、绿柱石、电气石等典型的稀有金属矿物。其中,与锂云母相比,含锂云母伟晶岩产生了新的特征峰;含锂辉石伟晶岩、含电气石伟晶岩相比于各自单晶矿物,其反射特征峰均明显向短波方向偏移;含绿柱石伟晶岩光谱曲线反射特征峰比绿柱石单晶反射特征峰明显向长波方向偏移。本文初步建立了可可托海典型矿物和岩石热红外光谱特征数据库,总结了以锂辉石、锂云母等稀有金属矿床矿物、含矿伟晶岩及围岩的热红外光谱特征,可为热红外光谱进行稀有金属矿物的识别及花岗伟晶岩型矿床的勘探提供必要的基础数据支撑。 |
| 关 键 词： | 可可托海|稀有金属|热红外光谱|锂辉石|锂云母 |
| 收稿时间： | 2020/4/30 0:00:00 |
| 修稿时间： | 2020/8/6 0:00:00 |
Thermal Infrared Spectra Characteristics of Rare Metal Minerals and Rock in the Keketuohai Deposit, Xijiang |
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| HUI Guang-ji,GAO Qing-nan,SONG Li-qiang,SUN Dong-xun.Thermal Infrared Spectra Characteristics of Rare Metal Minerals and Rock in the Keketuohai Deposit, Xijiang[J].Rock and Mineral Analysis,2021(1):134-144. | |
| Authors: | HUI Guang-ji GAO Qing-nan SONG Li-qiang SUN Dong-xun |
| Institution: | Core and Samples Center of Land and Resources, China Geological Survey, Sanhe 065201, China |
| Abstract: | BACKGROUND: At present, the application of new materials and new energy in various fields continues to deepen, and rare metal deposits have ushered in a worldwide upsurge of research and exploration. The Keketuohai rare metal deposit is the earliest developed deposit for rare metal mineral in China. However, the thermal infrared (TIR) characteristics of minerals and rocks from this deposit have not been studied, which restricts remote sensing geological survey and relevant studies. OBJECTIVES: To analyze the characteristics of thermal infrared spectra of minerals and rock assemblages from the Keketuohai deposit, and provide the basic data for rare metal exploration. METHODS: A portable thermal infrared spectrometer was used to measure the spectrum data of typical minerals and rock assemblages of Keketuohai No.3 vein. Data was analyzed using techtonics/structural geology (TSG) and related databases. RESULTS: Typical rare metal minerals like spodumene, lepidolite, beryl and tourmaline can be separated with TIR. Compared with lepidolite, there was a new diagnosed peak for the TIR spectrum of lepidolite-bearing pegmatite. The spectrum peaks of spodumene-bearing pegmatite and tourmaline-bearing pegmatite were significantly shorter than those of spodumene and tourmaline. However, the spectrum peaks of beryl-bearing pegmatite were shorter than the peaks of beryl. CONCLUSIONS: A database of thermal infrared spectroscopy characteristics of typical minerals and rocks in the Keketuohai has been established, and the thermal infrared spectroscopy characteristics of spodumene and lepidolite, ore-bearing pegmatites and surrounding rocks in rare metal deposits have been summarized in this study. Basic data support for the identification of rare metal minerals using thermal infrared spectroscopy and the exploration of granite pegmatite deposits has also been provided. |
| Keywords: | Keketuohai|rare metals|thermal infrared spectroscopy|spodumene|lepidolite |
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