中国矿山工程

The extraction of mineralized alteration information and the interpretation of remote sensing geological structure play an important role in ore deposit location. Taking Xialonggang lead polymetallic mine as an example, Landsat8 OLI data was selected to extract alteration information by means of principal component analysis, band ratio method and secondary principal component analysis, including interference signal removal, anomaly information extraction, anomaly classification and median filtering. The mixed anomaly information of iron stain and hydroxyl group was extracted by the secondary principal component analysis method. Five prospecting potential areas were identified through the analysis of remote sensing alteration information combined with remote sensing geological structure interpretation. The mixed alteration and variation of iron stain, hydroxyl group, iron stain and hydroxyl group were often superposition in the metallogenic prospect area, indicating that the Xialonggang area has good metallogenic potential. It provides scientific basis for geological prospecting in Xialonggang.