Figure 10. Image is a color composite of the highly decorrelated bands 5, 3, and 1 in red, green, and blueintrusive rocks and clay minerals. Spectral anomalies of altered intrusive rocks are displayed in yellow and reddish from pink to blue and green. Felsic volcanic rocks are displayed in deep blue to blue green. Alluvial deposits show characteristic pink and purple composition of bedrock. Because of more or less original hues of rocks, the image is more interpretable than the principal coat La Escondida mining district are marked by symbols.

5, 3, and 1 in red, green, and blue. This inverse PCA color composite reflects best the distribution of altered intrusive rocks and clay minerals. Spectral anomalies of altered intrusive rocks are displayed in yellow and reddish colors. Sedimentary rocks are displayed in various colors, ranging

volcanic rocks are displayed in deep blue to blue green. Alluvial deposits show characteristic pink and purple colors but vary with chemical composition of bedrock. Because of more or less original hues of rocks, the image is more interpretable than the principal components with resulting anomalous hues. Current open pits