云南个旧富锡铜矿床表层土壤近红外光谱分析及其意义

在个旧卡房矿区矿体上部的覆盖层中均匀采集土壤样，用近红外光谱分析技术对样品进行测试分析。结果表明，近红外光谱技术能较好的识别出土壤中的矿物，包括蚀变矿物大致组合。将这些矿物组合与矿床的特征对比发现，土壤中的一些成分与深部矿体组份有一定程度的相关性，尤其是蚀变矿物，其与该区的蚀变条件是基本一致的。因此，推测土壤中的矿物成分可以用于指示深部矿体的一些信息，能为找寻该类型铜矿床提供一些依据。此外，矿床表层土壤近红外光谱信息是可以提供找矿依据的一种快速有效的研究手段，可以将其用于其他矿床类型的研究，尤其是为深部隐伏矿床以及地质环境较为脆弱的地区提供初步找矿依据。

The Significance of Analyzing the Soil above the Gejiu Copper Deposits,Yunnan with Near Infrared Spectral

The authros collected the soil samples uniformly above the target ore district and analyzed them with the near infrared spectrum. The results show that the NIR could identify the minerals in the soil well, including the combination of altered minerals roughly. Contrasting these mineral combination with the characteristics of orebody, we found that there was a certain degree of correlation between the soil and the concealed orebody, especially the altered minerals which was consistent with the altered conditions of this deposit. Therefore, we thought that any mineral composition of soil could be used to indicate some information from deep orebody and provide some basis for finding this type of copper. In addition, we also thought that the NIR information contained in the soil above the oreboday could serve as an effective research method inproviding some basis for prospecting . And we can use it for other deposits, especially for the deeply concealed orebody and some regions with a fragile geological environment.