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Mercado Minerals Ltd. (CSE: MERC, OTCQB: MRMNF) has revealed drill outcomes from its first-ever 3,000-metre diamond drilling program at the Copalito Project in Sinaloa, Mexico. The company achieved a remarkable 0.80 metres grading 675 g/t silver equivalent within a broader 3.40-metre interval of 403 g/t silver equivalent at the El Pilar Vein, marking the most mineral-rich intercepts recorded at this target to date. Step-out drilling across several veins has successfully expanded known mineralized zones and uncovered new exploration targets for upcoming drilling campaigns.
Key Highlights
- Mercado Minerals Ltd. (CSE: MERC) announced key drill results from its inaugural 3,000-metre diamond drill program at the Copalito Project in Sinaloa, Mexico.
- El Pilar Vein yielded two of the highest-grade intercepts so far, including 0.80 metres grading 675 g/t silver equivalent and a broader 3.40-metre section grading 403 g/t silver equivalent.
- Drilling has defined the El Pilar Vein over a 1,250-metre strike length, highlighting a higher-grade corridor approximately 400 metres long by 200 metres down dip.
- Additional veins tested—El Agua, 5 Señores, El Pilar Sur, El Medio, and Chente—have a combined mapped strike length exceeding 1,900 metres, offering significant targets for future exploration drilling.
El Pilar Vein Produces Premier High-Grade Intercepts in Initial Drilling
The El Pilar Vein was the focal point of the initial drill program, with step-out holes delivering the most significant intercepts in this update. Drill hole COP-26-019 intersected 3.40 metres grading 11 g/t silver, 3.53 g/t gold, 1.45% lead, and 4.41% zinc (403 g/t silver equivalent) starting at 118 metres depth. Nested within this interval was 0.80 metres grading 9 g/t silver, 5.37 g/t gold, 1.65% lead, and 10.05% zinc, equating to 675 g/t silver equivalent.
Drill hole COP-26-018 also delivered notable results at El Pilar Vein, returning 4.05 metres grading 9 g/t silver, 1.86 g/t gold, 1.19% lead, and 4.08% zinc (264 g/t silver equivalent) from 117.40 metres. This included a higher-grade 0.65-metre section with 18 g/t silver, 3.80 g/t gold, 3.14% lead, and 11.85% zinc, equivalent to 635 g/t silver equivalent. These results have delineated a sub-horizontal, higher-grade zone roughly 400 metres in strike by 200 metres down dip, with the vein remaining open in all directions.
El Agua Vein Shows Expansion Along Strike and Depth
Step-out drilling at the El Agua Vein intersected strong mineralization, defining a higher-grade corridor approximately 500 metres along strike and 200 metres down dip. The vein itself extends 950 metres in mapped strike length. Drill hole COP-26-017 tested a shallower section, returning 1.25 metres grading 66 g/t silver, 0.06 g/t gold, 0.08% lead, and 0.10% zinc (68 g/t silver equivalent) from 44.75 metres depth. This included 0.55 metres grading 128 g/t silver, 0.08 g/t gold, 0.09% lead, and 0.13% zinc (127 g/t silver equivalent).
Drill hole COP-26-023 targeted a deeper portion, yielding a broad 48.40-metre intercept grading 26 g/t silver, 0.33 g/t gold, 0.10% lead, and 0.57% zinc (64 g/t silver equivalent) from 81.60 metres depth. Within this interval, 8.00 metres graded 103 g/t silver, 1.11 g/t gold, 0.18% lead, and 0.86% zinc (200 g/t silver equivalent). Mineralization remains open along strike in both directions and partially at depth.
5 Señores Vein and Other Secondary Targets Defined
At the 5 Señores Vein, drilling successfully intersected the southeast extension, with drill hole COP-26-016 encountering two wide vein intercepts of 4.50 metres and 7.80 metres. The first interval returned 15 g/t silver, 0.17 g/t gold, 0.02% lead, and 0.09% zinc (28 g/t silver equivalent) from 11.30 metres. The second interval, from 29.00 to 36.80 metres, graded 3 g/t silver, 0.28 g/t gold, 0.04% lead, and 0.22% zinc (29 g/t silver equivalent), including 1.00 metre with 3 g/t silver, 0.90 g/t gold, 0.05% lead, and 0.30% zinc (78 g/t silver equivalent).
The 5 Señores Vein currently maps 250 metres in strike length and remains open in all directions. Future exploration will focus on vectoring toward zones of potentially higher-grade mineralization. Additionally, a significant new structure was discovered at the El Pilar Sur Vein, where drilling intersected an 8.80-metre wide vein with a 300-metre strike length yet to be tested for higher-grade zones.
Newly Identified and Early-Stage Vein Systems
Initial drill holes COP-26-016, -020, -021, -022, and -024 successfully intersected structural features and vein mineralization in previously untested areas, confirming the presence of Southeast 5 Señores, Chente, El Pilar Sur, and El Medio veins at depth. These four veins have a combined mapped strike length exceeding 1,900 metres, with only seven drill holes completed to date.
CEO Daniel Rodriguez expressed satisfaction with the inaugural drill program results at Copalito, noting successful expansion of known mineralized zones along strike and at depth at El Agua, 5 Señores, and El Pilar veins. He highlighted encouraging early exploration at SE 5 Señores, El Pilar Sur, and El Medio, with clear follow-up targets aimed at enlarging higher-grade zones and exploring vein extensions.
Silver-Equivalent Metrics and Metallurgical Context
Silver-equivalent grades reported are based on typical recoveries derived from metallurgical studies of similar epithelial vein deposits. The company clarifies these calculations may not reflect the actual metallurgy of the Copalito property, as no metallurgical testing has yet been conducted. Assumed recoveries used are 91% for silver, 94% for gold, 70% for lead, and 75% for zinc.
Metal price assumptions for silver-equivalent calculations are US$24/oz silver, US$1,900/oz gold, US$0.90/lb lead, and US$1.10/lb zinc. Investors should note these figures are estimates and actual recoveries and prices may vary significantly. All intervals reported are core lengths, with further drilling needed to determine true widths.
Quality Assurance, Control, and Analytical Procedures
The company implemented stringent quality assurance and control measures during sampling and analysis. Drill cores were halved, with one half sent for laboratory analysis and the other retained for reference. Mercado personnel inserted duplicates, standards, and blanks regularly into the sample stream. Samples were bagged, secured with unique ID tags, and transported via secured courier to ALS Laboratories in Hermosillo.
At the lab, samples were crushed to over 70% passing below 2 mm, riffle split, and pulverized to over 85% passing below 75 microns. Gold was analyzed by fire assay with atomic absorption finish on 30-gram subsamples (Au-AA23), with samples exceeding 10 g/t gold re-assayed by fire assay with gravimetric finish on 50-gram subsamples (Au-GRA21). A 34-element ICP-AES analysis followed four-acid digestion. Samples with overlimit silver, lead, or zinc values underwent ore-grade analysis.
Qualified Person Review and Company Background
Kelson Willms, P.Geo., of Archer, Cathro & Associates (1981) Limited, a Qualified Person under National Instrument 43-101 standards, reviewed and approved the technical information disclosed, ensuring compliance with Canadian mineral project disclosure requirements.
Mercado Minerals is a silver-focused exploration company targeting discoveries in Mexico's emerging Western Silver Belt within the prolific Sierra Madre Occidental mining district. The company boasts a proven team with extensive Mexican exploration experience and is advancing multiple projects spanning over 3,000 hectares. Mercado is committed to creating shareholder value through disciplined exploration, strategic growth, and discovery-driven results.
Exploration Program Scope and Upcoming Drilling Plans
The initial 3,000-metre diamond drill program marks the first systematic drilling at Copalito, providing a solid foundation for prioritizing future drill targets. Upcoming work will concentrate on expanding higher-grade mineralization zones at El Agua and El Pilar veins, alongside exploration drilling of vein extensions and other priority targets identified through recent data.
The extensive unmapped and untested vein systems discovered suggest significant drilling potential ahead. With over 1,900 metres of combined strike length across four main veins and defined higher-grade corridors at El Pilar and El Agua, the property presents multiple drill-ready targets. The open-ended mineralization along strike and depth indicates promising opportunities for resource expansion.
Investment Outlook and Project Advancement
The immediate impact on Mercado Minerals’ share price remains unclear from public data. Investors should monitor management’s capital allocation for follow-up drilling, particularly at the high-grade El Pilar and El Agua zones. The disclosure of multiple mineralized veins over a large strike length may attract investors interested in early-stage precious and base metal exploration with multiple discovery avenues.
Mercado’s focus on disciplined exploration and discovery-driven growth offers a framework for assessing future progress. Prospective investors should recognize that exploration success is not guaranteed, and initial drill results do not ensure economic mineralization or mine development. The consistency and quality of future results, combined with management’s ability to fund ongoing drilling and advance resource definition, will be critical to the company’s path toward potential resource estimation.
