Abstract： The information extraction of alteration minerals（sericite，kaoline，chlorite，hematite，limonite，etc.）by multi-spectral remote sensing technology has been widely used in mineral exploration. With Landsat 8 OLI data，the principal component analysis and threshold techniques are used to extract and classify iron oxides and hydroxyl-bearing anomalies . Good results have been achieved，which provided a basis for the metallogenic prediction and the next exploration in the working area.
2020, Vol. 36 
