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  • 软件名称:基于地面反射波谱技术的锂含量定量反演研究
  • 软件大小: 0.00 B
  • 软件评级: ★★★
  • 开 发 商: 代晶晶,王登红,令天宇
  • 软件来源: 《遥感技术与应用》
  • 解压密码:www.gissky.net

资源简介

摘要: 锂是重要的新兴战略资源,四川甲基卡矿田是中国乃至于世界上锂矿资源最集中的地区之一。运用美国ASD FieldSpec-4便携式红外波谱仪,通过对甲基卡最大的矿脉X03号脉钻孔ZK1101孔的波谱测量,对比分析了含锂辉石伟晶岩、不含锂辉石伟晶岩及围岩的波谱特征,得出锂辉石具有1 413、1 900、2 207 nm三处吸收特征,区分含锂辉石伟晶岩、不含锂辉石伟晶岩及围岩的波谱吸收特征主要位于1 900 nm处,并通过1 900 nm吸收谷的吸收深度与锂含量的相关分析,建立了锂含量定量反演模型。本研究开启了对锂辉石这一标志性找矿矿物波谱特征的新认识,同时为今后锂含量定量评估奠定了高光谱理论基础。 关键词: 甲基卡;  锂矿;  反射波谱;  锂含量;  定量反演     Abstract: Lithium is an important strategic emerging resource. Jiajika ore deposit which is located in Sichuan province becomes one of the richest areas of Liresources in China and even in the world.The spectral measurement of its typical drill hole ZK1101 in the biggest X03 vein was conducted using ASD FieldSpec-4 portable spectroradiometer, and the spectral characteristics of pegmatite containing spodumene, pegmatite without spodumene, surrounding rocks were analyzed. It indicated that the spectrum of spodumene had three absorptions at 1 413 nm, 1 910 nm, 2 207 nm, and the discrimination of these three kinds of rocks was the spectral absorption features on 1 900 nm. Then the quantitative estimation model of lithium was built based on the correlation analysis between absorption depth of 1 900 nm and content of lithium. The study will start a new perspective of spodumene which plays an important role in ore prediction. What’s more, it will provide hyperspectral basis for quantitative estimation of content of lithium in the feature.

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