Electrical and PEXMEL Responses over a Sulphide Body in Shyami-ki-Dhani Area,Sikar District, Rajasthan.

摘要

Massive sulphide mineralisation with total sulphide content (TSC) about 25-30% in visual estimate was reported from the debri of a dug well dump near village Shyami-ki-Dhani in Neem-ka-Thana tehsil of Sikar district of Rajasthan. Integrated geological, geophysical and geochemical surveys were carried out in the area. In addition, to identify the type and abundance of metallic mineral present in the study area, PEXMEL (Partial Extraction of Metallic Ions by Electrolysis) survey was also carried out over the geophysical & geochemical anomaly zone. The results of the synergistic approach are presented in this paper. Results of PEXMEL survey over test traverse in this area are indicating 1025 NCC units for Zn over a background of 100 NCC units; and 150 NCC units of Pb over a background of 30 NCC units. A rock sample analyzed from well dump gives the following values: 1.3% Zn and 0.3% Cu. Surface Geophysical surveys employing electrical methods along with PEXMEL method were successful in identifying sulphide body's extension and type of metallic sulphide.