Jun 17, 2021 · For example, 1000ppm to 5900 ppm Bi, 1500 to 8000 ppm As, 1200 ppm to 3500 ppm Cu, % to % Pb, % to % Zn, /t to g/t Au, along with detectable Te of 10 ppm to 80 ppm Te, It is to be noted that this element suite is indiive in the district of PermoCarboniferous intrusive related gold signatures.