Using absorbed value feature of known mineral criterion for reference,utilizing Landsat 7 ETM remote images and features of altered mineral spectrum from USGS,valuable alteration mineralization information are extracted by comparison of spectrum similarity.

Based on the principle of near-infrared spectrum absorption by altered minerals,optimum measurement wavelength ranges for altered minerals were fixed and qualitative and quantitative analysis for altered minerals in rocks by near infrared spectrometer were accomplished with the mathematics and spectrum learning methods.

The altered minerals and their assemblages have traditionally been identified by naked eyes in the field or by microscopes indoors.

Combining with the question for study,this essay mainly,introduces the processing and analysis methods about the field spectrum measurement data of Xiangshan Uranium Field to ensure the characteristic spectrums of the alteration minerals from the quantitativ.