The reconnaissance of mineral resources through as

Authors: Lei Liu Jun Zhou Fang Yin Min Feng Bing Zhang

Publish Date: 2014/04/08

Volume: 25, Issue: 2, Pages: 397-406

PDF Link

Abstract

Advanced Spaceborne Thermal Emission and Reflection Radiometer ASTER data covering the Jiafushaersu area in Xinjiang were used for mapping lithology and hydrothermal alteration The study area situates at a potential mineralization zone in relation to small hypabyssal granodiorite or quartz monzonite intrusions along the margin of granitoid batholiths of Darbut foot wall The false colour composition of bands 521 and the first three principal component analyses PCA1 PCA2 PCA3 in RGB identify the lithological units and discriminate the small intrusions very well from the adjacent granitoid batholiths PCA and spectral angle mapper SAM algorithm were employed to discriminate alteration minerals The results indicate that the hydroxylbearing or ferric and less commonly carbonate types show good correlation with the quartz monzonite porphyry and aplite Field verification led to finding of the Jiafushaersu molybdenum mineralization The lithological and geochemical features imply that the molybdenum mineralization is close to the porphyry type This study further verified that the foot wall of the Darbut suture could have served as a more important metallogenic district for the porphyry copper and molybdenum deposits It is concluded that the ASTER databased methods can be used as a powerful tool for small intrusiontype mineral resources targeting

Keywords: