Remote Sensing Alteration Information Extraction of Manganese Mineralization in Postmasburg, South Africa

Inhalt:
In this paper, alteration information of ferric contamination, hydroxylate, carbonatization and manganese mineralization in Postmasburg area of South Africa was extracted by using ASTER multi-spectral satellite remote sensing data and principal component analysis algorithm according to spectral characteristics of alteration minerals related to manganese ore. The results of alteration extraction are compared with the data of regional geological survey and geochemical survey in the study area, and the distribution law of remote sensing alteration anomaly in regional space is summarized, and the spatial coupling relationship between remote sensing alteration anomaly and regional geology is discussed, which fully verifies the accuracy and reliability of the alteration information extracted in this paper. It can provide technical support for remote sensing alteration information extraction of subsequent mineral exploitation. In addition, the results obtained in this study are mutually interpreted with the existing research results, providing strong remote sensing evidence for the study of manganese ore geology in Postmasburg area.