Montero Completes Geological Logging of 625.25-Metre Drillhole at Elvira and Reports Pyrite-Bearing High-Sulphidation Alteration
Montero’s Elvira drill hole validates the target model while assay results remain pending to confirm metal grades.
Montero Mining and Exploration Ltd. (MON) released a geological logging update on August 4, 2026, regarding drillhole MON-ELV-02 at its Elvira Gold Project in Chile. Drilled as a replacement for MON-ELV-01, the hole reached a final depth of 625.25 metres. Geological logging confirms the intersection of strongly altered volcanic rocks down to approximately 194.40 metres, followed by a feldspar-quartz-amphibole porphyry extending to the bottom of the hole.
Key geological features identified include widespread quartz-alunite-pyrite alteration, a base of oxidation at approximately 253 metres, and pyrite-bearing sulphide mineralisation below that depth. Assay results are currently pending as the company awaits laboratory confirmation of gold, silver, and copper grades.
The update follows a clear chronological progression of the company’s activities at the site:
- October 2025: Option agreements signed to acquire Elvira and Potrero.
- March 2026: Geochemical and geophysical modeling identified high-priority porphyry targets.
- May 2026: Phase 1 drilling commenced with four planned holes (~2,025m).
- July 2026: MON-ELV-02 completed; next hole (MON-ELV-03) began.
- August 2026: Detailed geological logging confirms the integrated targeting model.
Montero Mining and Exploration Ltd. (MON) released an update that is considered incremental within the context of its announced Phase 1 drill program. The company noted that geological logging alone does not constitute a resource or reserve; it merely validates the subsurface model, including the volcanic-porphyry contact, high-sulphidation alteration, and IP chargeability anomaly.
Without assay results, the market cannot price in any metal content or economic potential. The news confirms the execution of the exploration plan but does not materially alter the company's valuation or risk profile until grades are disclosed. The progression from target definition to drilling completion is on schedule, which is operationally positive but routine for a junior explorer in the field.
Montero Mining and Exploration Ltd. is a junior exploration company focused on gold and copper projects in Chile's Maricunga Belt. Its flagship asset is the Elvira Gold Project, a 1,000-hectare license situated at approximately 3,900m elevation. The project features a high-sulphidation epithermal system overlying a potential porphyry Cu-Au domain. Historical drilling by Buena Vista Gold reported 39m @ 0.66 g/t Au.
The company also holds the Potrero Gold Project, a 3,200-hectare license with historical intercepts of 126m @ 0.44 g/t Au. Additionally, Montero holds the Avispa Copper-Molybdenum Project, a 203,000-hectare license in the Atacama region.
The company holds options to acquire 100% of Elvira and Potrero, with a total consideration of US$7 million per project payable over six years. A 2% NSR royalty is retained by the vendor.