- Copper One (CSE:CEXY) reported a high-grade underground sample at Majuba Hill returning 10.5 per cent copper and 188 ppm silver from the historic Middle Adit
- Geological mapping confirmed known mineralized breccia systems and identified an additional north-northwest structural corridor that could host high-grade copper mineralization
- The company plans to drill beneath the high-grade sampling area, building on previous drill intercepts that returned significant copper and silver grades over substantial widths
- Copper One stock (CSE:CEXY) opened trading at $0.60
Copper One Resources (CSE:CEXY) has reported high-grade copper and silver assay results from a recent underground breccia mapping program at its flagship Majuba Hill Copper-Silver-Gold Project in Pershing County, Nevada. The results are part of the company’s ongoing efforts to refine drill targets and better understand the geological controls on mineralization at the project.
A standout sample from the historic Middle Adit, identified as MHR-793, returned grades of 10.5 per cent copper and 188 parts per million silver, equivalent to approximately 5.5 ounces per ton silver. The sample was collected during a 2026 geological mapping program designed to characterize breccia textures and mineralization within the underground workings.
The program examined 15 underground locations and included comparisons with eight historic rock samples collected in 2016 that returned copper grades ranging from 0.39 per cent to 1.6 per cent. According to the company, the high-grade MHR-793 sample and nearby sample MHR-794 contained oxide copper mineralization, primarily azurite, hosted within magmatic-hydrothermal intrusive breccias characterized by coarse-spongy and radiating tourmaline matrix textures.
This article is a journalistic opinion piece that has been written based on independent research. It is intended to inform investors and should not be taken as a recommendation or financial advice.
“Majuba Hill has entered an exciting new phase with drilling now underway on our initial ExploreTech AI-designed core hole,” David Greenway, president and CEO of Copper One said in a news release. “Recent underground mapping within the historic Middle Adit has strengthened our geological model by confirming breccia-hosted copper mineralization and its relationship to surface structures. By combining detailed field geology with AI-assisted exploration tools, we continue refining drill targets and improving the precision of our exploration program. These results provide additional confidence in our current drill program as we evaluate the extent and continuity of the mineralized breccia system.”
Mapping program expands geological understanding
Copper One said its 2026 spring geological mapping campaign focused on identifying and delineating surface exposures of tourmaline breccia bodies believed to be associated with higher-grade copper mineralization. Subsequent underground mapping within the Middle Adit confirmed the presence of the same breccia styles observed at surface.
The work reinforced the project’s known northeast-trending breccia system while also identifying a previously under-reported north-northwest-trending breccia corridor. Management believes the additional structural information strengthens geological interpretations and may help guide future exploration efforts.
The company noted that the findings provide increased confidence for its ongoing 2026 drill program by refining existing structural targets and highlighting additional areas that may host high-grade copper mineralization.
Upcoming drill test planned
Copper One’s planned drill hole, designated 26PDH-1, has been positioned to test mineralization beneath the high-grade samples collected from the Middle Adit. The hole is also intended to evaluate the southern extension of the tourmaline-bearing hydrothermal-magmatic breccia system identified during mapping.
The company believes the drill program could help determine the continuity of the mineralized breccias at depth and assess their potential relationship to broader copper-silver mineralization within the Majuba Hill system.
Historical drill results provide context
The newly reported sampling results build on previous drill intersections from the project that demonstrated the presence of copper and silver mineralization within tourmaline-bearing breccias.
Notable historical intercepts include:
- MHB-2: 146 feet (44.5 metres) grading 1.41 per cent copper and 97.6 ppm silver, including 28 feet grading 0.74 per cent copper and 120.8 ppm silver.
- MHB-32: 379.5 feet (115.7 metres) grading 0.33 per cent copper and 16.97 ppm silver, including 40 feet (12.2 metres) grading 1.36 per cent copper and 13.33 ppm silver.
These historical drill results, combined with the recent high-grade underground sampling, support the company’s view that tourmaline-bearing hydrothermal-magmatic breccias may represent an important control on copper and silver mineralization at Majuba Hill.
Investor takeaway
The 10.5 per cent copper and 188 ppm silver result from sample MHR-793 represents one of the highest-grade rock samples reported from the current mapping program and provides additional evidence of significant copper-silver mineralization within the Middle Adit area. While rock samples are selective in nature and not necessarily representative of broader mineralized zones, the results are helping Copper One refine drill targets as it advances exploration at Majuba Hill.
Investors will likely be watching the results from the planned 26PDH-1 drill hole for indications of whether the high-grade mineralization observed underground extends at depth and over broader widths that could support future resource growth.
About Copper One Resources
Copper One Resources Corp. engages in the acquisition and exploration of mineral property assets in North America. It primarily explores gold, silver, tin, and copper deposits. Its flagship is the Majuba Hill project consists of 403 federal lode mining claims, as well as four private property parcels, covering an approximately 3,919 hectares located in Nevada.
Copper One stock (CSE:CEXY) opened trading at $0.60 and though it has risen 7.14 per cent last week it has lost 69.23 per cent since the year began.
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