POTOSÍ, BOLIVIA – Eloro Resources Ltd. (TSX: ELO; OTCQX: ELRRF; FSE: P2QM) has officially released the initial assay results from its latest phase of expansion diamond drilling at the Iska Iska silver-tin polymetallic project. The findings, derived from the first three drill holes (DSB-94, DSB-95, and DSB-96) of a targeted 10,000-meter program, signal a significant step forward in the company’s objective to upgrade its mineral resource inventory and refine its upcoming Preliminary Economic Assessment (PEA).
The Iska Iska project, situated in the Potosí Department of southern Bolivia, continues to demonstrate its potential as a world-class epithermal-porphyry complex. By focusing on infill and step-out drilling within the "Potential Starter Pit" area of the Santa Barbara Zone, Eloro is methodically defining the lateral and vertical extent of high-grade mineralized domains.
The Strategic Importance of the Expansion Program
The current drilling campaign, which encompasses approximately 30 holes, aims to bridge the gap between inferred and indicated mineral resources. In the mining industry, the transition from "Inferred" to "Indicated" status is a critical milestone that allows for more reliable economic modeling and mine planning.
The three holes reported—totaling 1,459.23 meters—were strategically placed to intersect the distinct geological domains identified at the site. DSB-94 targeted the Silver-Tin (Sn) Domain on the western flank, DSB-95 explored the newly defined Gold-Silver-Zinc-Lead Epithermal Domain in the east, and DSB-96 penetrated the central Polymetallic Domain. While DSB-96 faced a brief 45-day suspension due to logistics and technical challenges, the team has confirmed the site is once again operational, with the company remaining on track to complete the full 10,000-meter phase by the end of 2026.
A Detailed Look at the Assay Results
The geological data retrieved from these holes underscores the complex, multi-pulse nature of the Iska Iska mineral system. The presence of high-grade ore pockets within permeable lithologies—such as breccias and dacites—suggests that the hydrothermal system is more extensive than previously mapped.
Drill Hole Highlights:
- DSB-94: This hole delivered a consistent mineralization trend, specifically within the Silver-Tin domain. Notable intercepts included a substantial 42-meter section grading 44.06 g/t Ag eq. within a larger 79.5-meter interval.
- DSB-95: Demonstrating the rich, diverse epithermal potential, this hole intersected 6.0 meters grading 280.93 g/t Ag eq. and another 3.0-meter section yielding 294.99 g/t Ag eq. These results validate the high-grade potential of the eastern epithermal domain.
- DSB-96: Centrally located, this hole hit an impressive 17.9-meter intercept grading 228.03 g/t Ag eq. and a 126.1-meter zone grading 64.53 g/t Ag eq., confirming the strength of the polymetallic core.
These results are crucial for the PEA because they confirm that the high-grade structures remain open in all directions. As the drill density increases, the company is finding fewer gaps in the resource model, which previously were characterized as "internal waste" or low-grade zones.
Chronology of the Santa Barbara Development
Eloro’s journey at Iska Iska has been one of consistent, data-driven expansion since the initial discovery in 2020.
- September 2020: Commencement of underground diamond drilling from the Huayra Kasa workings.
- January 2021: Discovery of the Santa Barbara Breccia Pipe (SBBP), where hole DHK-15 yielded 257.5 meters of polymetallic mineralization.
- October 2023: Filing of the maiden NI 43-101 Technical Report, outlining the initial Inferred Mineral Resource Estimate (MRE).
- January 2024: Metallurgical testing of a 6.3-tonne bulk sample indicated that silver grades were likely significantly underreported in smaller core samples, providing a "upside surprise" for the project’s economics.
- September 2024 – Present: Initiation of the current intensive 10,000-meter expansion drilling program, focusing on closing the 50m x 50m grid spacing to upgrade resource classification.
Official Perspectives: Leadership Insights
Tom Larsen, CEO of Eloro Resources, expressed optimism regarding the latest data. "We are pleased to report these results, which confirm higher-grade intercepts, particularly in drill holes DSB-94 and DSB-96," Larsen stated. "These positive outcomes provide a solid foundation as we work to expand the Indicated Mineral Resource in support of our planned PEA."
Dr. Osvaldo Arce, Executive Vice President of Exploration and Operations for Latin America, provided a more technical assessment of the findings. "The mineralized intercepts demonstrate the diverse nature of the Santa Barbara Zone," Dr. Arce noted. "The system is characterized by widespread multi-pulse overprints, which have likely precipitated within permeable host rocks. This geological setting is exactly what we look for when trying to identify high-grade ore pockets that can materially change the economics of the project."
Dr. Arce further emphasized that because the mineralized zones remain open at depth and laterally, there is significant potential for further resource expansion as the program continues through the end of the year.
Technical Rigor and Quality Assurance
Eloro maintains a rigorous industry-standard QA/QC (Quality Assurance/Quality Control) program to ensure the integrity of its assay data. Samples were processed by two major, internationally accredited laboratories: ALS and AHK.
The analytical methodology is robust:
- Silver, Zinc, and Lead: Analyzed via Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) utilizing a four-acid digestion process.
- Tin: Analyzed by X-Ray Fluorescence (XRF), with check samples subjected to sodium peroxide fusion.
- Gold: Analyzed by standard fire assay on 50g pulps with an Atomic Absorption Spectroscopy (AAS) finish.
By using dual laboratories and cross-referencing results through regular check samples, Eloro ensures that the potential for error is minimized, providing investors with a high degree of confidence in the reported metal grades.
Implications for the Future of Iska Iska
The ongoing expansion at Iska Iska is not merely about increasing the total volume of mineralized rock; it is about "de-risking" the project. By tightening the drilling grid, Eloro is creating a more precise map of the deposit. In mining, geological confidence is directly correlated with the ability to secure project financing and obtain regulatory permits.
As the company moves toward the completion of its PEA, these drilling results serve as critical inputs for the economic model. The ability to demonstrate continuity in high-grade silver and tin, especially within the "Potential Starter Pit," suggests that the early years of a potential mining operation could be significantly more profitable than initially modeled.
Moreover, the property’s status as a royalty-free, road-accessible site adds a layer of economic attractiveness that is increasingly rare in the junior mining sector. With the Potosí region having a long history of successful mining—reminiscent of the famous Cerro Rico de Potosí—Eloro is well-positioned to capitalize on the established infrastructure and geological expertise in the area.
Conclusion
With 27 drill holes already completed in the current phase and a clear roadmap for the remainder of 2026, Eloro Resources is demonstrating the operational discipline required to bring a large-scale project toward development. The latest results from holes DSB-94, DSB-95, and DSB-96 reinforce the view that Iska Iska is a complex, high-potential asset. As the company continues to unlock the geological secrets of the Santa Barbara Zone, shareholders and industry analysts alike will be watching closely to see how these expanding mineral footprints translate into the final PEA figures, which will ultimately dictate the path toward production.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Investors should perform their own due diligence and consult with professional advisors before making investment decisions.
