Information Extraction of Typical Alteration Zone of Porphyry Copper Deposit and Delineation of Prospective Areas in Southern Peru
Wu Xiaojuan
Xiao Chenchao
Yang Rihong
Li Zhizhong
Cui Zhenying
Abstract：Every porphyry copper deposit has different geological structure,metallogenic epoch and ore controlling factors. Therefore,it is necessary to carry out geological investigation to obtain the information of the iconic alteration mineral assem-blage to extract the alteration information by using remote sensing technology and determine prospective areas.A comprehen-sive analysis of geological characteristics and ore controlling factors of porphyry copper deposit in southern Peru is carried out in this study.The combined information of argillic-and phyllic-alteration and propylitic alteration is established as the ore pros-pecting indicator and the technology of alteration information extraction is explored with ASTER data.Combined with existing mining geological data,hyperspectral image and field survey results,alteration extraction results are confirmed as reliable and effective and the other two prospective areas are delineated.The multi-spectral remote sensing prospecting model is constructed and its application proves successful in other porphyry copper districts such as Chile,Argentina.
Keywords：southern Peruporphyry copper deposittypical alteration zonemineral information extractiondelineation of pro-spective areaore geology
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 1802-1809 )