CSE:CDPR
The DIA provides the details and coordinates for the 40-hole drilling program that CDPR intends to carry out on its El Metalurgista Concession located within the Quiulacocha tailings deposit. The Quiulacocha tailings deposit covers approximately 115 hectares with tailings deposited in the Quiulacocha Tailings Storage Facility (TSF) from the early 1920´s to 1997. According to historical records, the Cerro de Pasco mine processed approximately 73 million tonnes of sulphide material between 1952 to 1997 from the open pit and underground workings, which was deposited into this facility during this time.
Cerro de Pasco mining operations started in 1630 and are still operational today. The tailings stored in the TSF, comprised of processing residues, come from the Cerro de Pasco open pit and underground mine. Initially these tailings resulted from the mining of copper-silver-gold mineralization with reported historical head grades of up to 10% Cu, 4g/t Au and over 300g/t Ag and later from the mining of zinc-lead-silver mineralized material with average historical grades of 7.41% Zn, 2.77% Pb and 90.33g/t Ag. The most recent Historical Mineral Resource Estimate for the Quiulacocha tailings by
This Historical Resource Estimate is detailed and discussed in the technical report titled The Excelsior Mineral Pile (EMP) and Quiulacocha Tailings (QT) associated with the
The drilling program presented in the DIA is planned with sonic drilling equipment and will focus on the central, deeper section of the tailings deposit. Drilling is planned on a 100 x 100-meter grid with drill depth to be limited by the base of the deposit (lake sediments and organic material). It is expected that the drilling will confirm the grades already established in the upper portion of the tailings while also intersecting the expected higher-grade tailings in the deeper sections of the deposit. The sampling and assaying program from the drilling will include a Quality Assurance/Quality Control (QA/QC) program which incorporates the insertion of blanks, standards, twin samples, duplicate pulps and coarse rejects and a selection of sample pulps to be sent to a secondary laboratory. After completing the sampling and assaying program and mineralogical studies, composites will be generated to undertake metallurgical studies.
Technical Information
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