Caldas Gold Corp. (TSX-V: CGC) announced additional higher-grade gold intercepts over broad widths from the final ten diamond drill holes (7,120 meters) drilled in the Marmato Deeps Zone, completing the extension of the 2019 Phase 2 infill drilling program at its Marmato Project in Caldas, Colombia. This latest drilling, which was successful in extending the recently discovered New Zone along strike to more than 400 meters, was designed to test the strike extension of the NZ to the southeast and the down plunge extension of the Main Zone below the 600 meters level that was set as the bottom of the Indicated Resources for the upcoming pre-feasibility study, which is expected to be finalized in mid-2020.
High-grade mineralization over a broad width was also intercepted in hole MT-IU-062, representing a potential new zone south of the MDZ. This zone is anticipated to be accretive to overall global resource growth as the mineralization lies either outside the boundary of the current mineral resource estimate block model for the MZ or in areas that were previously estimated to be below the cut-off grade due to lack of information.
Serafino Iacono, Chairman and Interim Chief Executive Officer of Caldas Gold, commented, “Our enthusiasm continues to build as the NZ continues to deliver robust gold grades of a size that begins to resemble the MZ. The strike extension of more than 400 meters provides us with a high potential zone ready for infill drilling to continue to grow our world class deposit. In addition, the discovery of another potential new high-grade zone opens a new scenario for resource growth. All in all, we remain very encouraged by the potential for mineral resource growth in the MDZ at our Marmato Project.”
This extension phase of drilling started in late November 2019 and was completed in mid-March 2020 with two contractor diamond drill rigs operating from three purpose-built underground drill stations. It comprised a total of 10 drill holes totaling approximately 7,120 meters, of which 175 meters were drilled to deepen drill hole MT-IU-045 in order to fully intersect the NZ.
The Company plans to drill up to 10,000 meters of infill drilling on the NZ commencing near the end of May. This infill drilling is designed to convert Inferred mineral resources to the Indicated category and to add additional mineral resources by stepping out along the southeastern extension of the NZ.
Intersections with high gold grades generated from the last ten drill holes of the extension of Phase 2 drilling reported herein (MT-IU-045 and MT-IU-055A to MT-IU-064), include:
The style of mineralization of the intersections associated with both the NZ and the NZ-2 is the same as the MZ and is characterized by very narrow veinlets of quartz-pyrrhotite-bismuth tellurides with free gold and minor amounts of pyrite and chalcopyrite, with a narrow halo of sodic-calcic alteration.
Key Highlights and Intercepts from the extension of Phase 2 drilling
The following table is a list of significant intersections from the ten drill holes (MT-IU-045 and MT-IU-055A to MT-IU-064) of the extension of Phase 2 drilling reported in this release:
|Hole ID||From (m)||To (m)||Width (m)||Au Grade
Please refer also to the attached illustrative images in Attachment 1 showing a plan view of the NZ that occurs outside the current mineral resources model for the MZ and a cross-section for hole MT-IU-062.
Dr. Stewart D. Redwood, PhD, FIMMM, Senior Consulting Geologist to the Company, is a qualified person as defined by National Instrument 43-101 – Standards of Disclosure or Mineral Projects and prepared or reviewed the preparation of the scientific and technical information in this press release. Verification included a review of the quality assurance and quality control samples, and review of the applicable assay databases and assay certificates.
Quality Assurance and Quality Control
The Marmato Project core samples were prepared by SGS Laboratories Ltd (ISO 9001:2008) at their laboratory in Medellin, and assayed in their laboratory in Lima, Peru. Gold was assayed by 30 g fire assay with atomic absorption spectrophotometer (“AAS”) finish. Samples over 10.0 g/t gold were re-assayed by 30 g fire assay with gravimetric finish. Silver was assayed by aqua regia digestion and AAS finish. Blank, standard and duplicate samples were routinely inserted for quality assurance and quality control.
About Caldas Gold Corp.
Caldas Gold is a Canadian junior mining company currently advancing a prefeasibility study for a major expansion and modernization of its underground mining operations at its Marmato Project in the Department of Caldas, Colombia with mineral resources of 2.0 million ounces of gold in the Measured and Indicated categories and 3.3 million ounces in the Inferred category. A Preliminary Economic Assessment study (Preliminary Economic Assessment Report, Marmato Project, Colombia, dated February 6, 2020 completed by SRK Consulting (U.S.), Inc.) is available on the Company’s SEDAR profile at www.sedar.com.
Plan view showing the strike extension of the New Zone compared with the block model for gold:
Cross-section showing the intersection associated with drill hole MT-IU-062 showing the potential New Zone 2 (NZ-2):
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We acknowledge the [financial] support of the Government of Canada.