GCM Mining Corp. Announces Multiple High-Grade Drill Results from the 2022 In-Mine and Brownfield Drilling Campaigns At Its Segovia Operations
June 27, 2022 at 07:17 am EDT
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GCM Mining Corp. announced multiple high-grade intercepts from the latest 32 diamond drill holes, totaling 8,299 meters, from the 2022 in-mine and near-mine drilling programs, as well as a further 28 diamond drill holes, totaling 7,735 meters, from the 2022 brownfield drilling programs at its Segovia Operations, Colombia. The Company also announced the assay results from one additional kick-off diamond drill hole, totaling 748 meters, from the ongoing directional drilling program on the El Silencio Deep Zone. Significant high-grade intercepts from the latest drill results include: In-mine Sandra K: 146.33 g/t Au and 712.0 g/t Ag over 0.30 meters on the Sandra K Techo Vein (SK-ES-035);
El Silencio: 271.16 g/t Au and 142.9 g/t Ag over 0.88 meters on the 450 Vein (ES-EU-047); and, El Silencio: 78.09 g/t Au and 20.0 g/t Ag over 1.29 meters on the Nacional Vein (ES-EU-48) Brownfield Marmajito: 23.55 g/t Au and 22.0 Ag over 0.60 meters on the Marmajito Vein (MAR-EU-018); Vera: 8.81 g/t Au and 479.9 g/t Ag over 0.54 meters on a SNO Vein (VER-ES-032A); and, La Guarida-Cristales Vein System: 48.45 g/t Au and 34.2 g/t Ag on the Cristales Vein over 0.47 meters (CR-ES-047A). GCM Mining currently has a total of 10 diamond drill rigs in operation at Segovia distributed as follows: In-mine and near-mine drilling - Two rigs are carrying out step-out drilling at the Sandra K Mine from two purpose-built surface platforms; and, Four rigs are carrying out resource definition on the El Silencio Deep Zone from one purpose-built underground drill station in the El Silencio Mine to test the 450 and Manto veins from the Lejanias sector, and two additional purpose-built underground drill stations on Levels 11 and 17 of the Providencia Mine to test the Nacional Vein. The fourth rig is conducting directional in-fill drilling on the southern ore-shoot below Level 38A from a purpose-built underground drill station on Level 3 of the Sandra K Mine; One rig is carrying out resource definition at the Carla Mine from a purpose-built underground station off Level 3 to guide the mine development. Brownfield drilling: Two rigs are operating from surface on the La Guarida-Cristales Vein System; and One rig is operating from surface on the Manzanillo Vein. Results from brownfield exploration drilling are reported for 28 holes (7,735 m) including: 5 holes (1,326 m)
at Vera (VER-ES-029 to VER-ES-032A) of which one was lost; 4 holes (1,298 m) at Marmajito (MAR-EU-
016 to MAR-EU-019) and 19 holes (5,111 m) on the La Guarida-Cristales Vein System (CR-ES-031B and
CR-ES-034 to CR-ES-048) of which three were lost. There are no results above cut-off grade for 3 holes
at Vera, 2 holes at Marmajito and 11 holes on La Guarida-Cristales Vein System.
Qualified Person:
Dr. Stewart D. Redwood, PhD, FIMMM, FGS, 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 Segovia samples were prepared and assayed by SGS Laboratories Ltd. (ISO 9001:2008) at their
laboratory in Medellin. Gold was assayed by 30 g fire assay with atomic absorption spectrophotometer
("AAS") finish. Samples above the upper detection limit of 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. Silver samples above
500 g/t were re-assayed by nitric and hydrochloric acid digestion with AAS finish for ore grades and the
highest in grade were double-checked by SGS Laboratories Ltd. in Lima, Peru. Blank, standard and
duplicate samples were routinely inserted and monitored for quality assurance and quality control.
Aris Mining Corporation is a Canada-based company, which is primarily engaged in the acquisition, exploration, development and operation of gold properties in Colombia, Guyana and Canada. The Company operates the Segovia Operations and Marmato Mine in Colombia. The Segovia Operations are located 180 kilometers (km) northeast of Medellin in the Segovia-Remedios mining district of Antioquia, Colombia. The Marmato mine is located in the Marmato gold district in the Caldas Department, a mountainous region approximately 80 km south of Medellin, Colombia. The Company is also the operator and 20% owner of the Soto Norte Project. The project is located within the traditional mining area of California, Vetas, which is located approximately 350 km north of Bogota and 55 km northeast of the city of Bucaramanga. The Company also owns the Toroparu Project in Guyana and the Juby Project, which covers an area of approximately 42,817 hectares and is located in the Cuyuni-Mazaruni Region of Guyana.