Study of the Oyu Tolgoi Cu-Au deposit characteristics using mult-spectral ASTER data

In this study, ASTER data was analyzed to extract spectral characteristics of the Oyu Tolgoi porphyry Cu-Au deposit region in Mongolia. We proposed extraction model of alteration zone and silicate mineral zone by using various band ratio logical operator. The central Oyu tolgoi deposit is associated with advanced argillic alteration. The south and southwest deposits are associated with phyllic alteration. Khan Bogd is associated with alkali feldspar minerals. The results show that these techniques have potentials in mineral prognostication.