By Charles Pitts
Lundin Gold (TSX: LUG) has announced the discovery of two new copper-gold porphyry systems on its concessions in southeast Ecuador, bringing the total number of identified porphyry centers in the district to seven. The new discoveries, named Sandia Northeast and Sandia Southeast, emerged from an intensive 2026 exploration campaign designed to expand the resource base surrounding the company’s flagship Fruta del Norte (FDN) gold mine.
The expansion of the Sandia cluster reinforces the Cordillera del Cóndor as one of the most prolific emerging copper-gold districts in the Andes. Lundin Gold has confirmed that it is now fast-tracking the original Sandia deposit toward a maiden mineral resource estimate (MRE), currently targeted for early 2027. This move signals a strategic shift for the company as it transitions from a single-asset gold producer into a multi-asset developer with significant copper exposure.
The Sandia Discoveries: Expansion of a 10 km Corridor
The two new systems were identified through scout drilling targeting geochemical anomalies south and east of the main Fruta del Norte operations. Sandia Northeast was discovered approximately 500 meters from the primary Sandia deposit, following the testing of a significant copper-molybdenum soil anomaly. Meanwhile, Sandia Southeast was located in a previously undrilled area between the Sandia and Trancaloma targets.
These discoveries are part of a broader 10-kilometer mineralized corridor that hosts shallow copper-gold porphyry systems. The current list of identified porphyry centers includes:
- Sandia (Main)
- Sandia Northeast (New)
- Sandia Southeast (New)
- Trancaloma
- Trancaloma West
- Castillo
- Chontas
The geological significance of these systems lies in their scale and proximity to existing infrastructure. Unlike deep-seated porphyries that require massive capital for underground development, the Sandia cluster appears to host relatively shallow mineralization, which could drastically improve the economics of any future satellite operations.
Drilling Results and Technical Analysis
Lundin Gold’s 2026 drilling program at Sandia has yielded some of the most consistent mineralized intervals in the region’s history. Data from the most recent holes at the main Sandia deposit indicate broad zones of mineralization that remain open in several directions.
The following table summarizes key intercepts from the 2026 campaign at the Sandia project:
| Hole ID | Interval (m) | Copper (%) | Gold (g/t) | Silver (g/t) | From (m) |
|---|---|---|---|---|---|
| SND-2026-510 | 909.45 | 0.38% | 0.06 | 1.93 | 29.0 |
| SND-2026-502 | 551.30 | 0.42% | 0.08 | 1.62 | 67.0 |
| SND-2026-498 | 454.00 | 0.22% | 0.11 | 0.82 | 278.7 |
| SND-2025-001* | 603.00 | 0.68% | 0.10 | 2.85 | 27.0 |
*Historical reference from discovery year.
The results from hole SND-2026-510 are particularly noteworthy, showing nearly a kilometer of continuous mineralization starting almost from the surface. This level of vertical continuity is a hallmark of large-scale Andean porphyry systems and suggests that the Sandia cluster could eventually support a large-tonnage operation. The high molybdenum (Mo) values reported in several holes: averaging nearly 40 ppm in some sections: provide additional evidence of a robust hydrothermal system.
Strategic Context: The $85 Million Exploration Push
The success at Sandia is the result of Lundin Gold’s largest-ever exploration budget. For 2026, the company allocated US$85 million toward discovery and resource conversion, a move aimed at diversifying its production profile as global demand for copper intensifies.
The budget is divided into three primary pillars:
- Near-Mine Exploration (US$56 million): Focuses on the 100,000-meter surface and underground program at FDN and the immediate porphyry corridor.
- Regional Exploration (US$21 million): Dedicated to testing 8,000 meters of advanced targets across the broader land package.
- Resource Conversion (US$8 million): Supports the 25,000-meter program to upgrade existing reserves at FDN and the new FDNS development.
This aggressive spending comes at a time when the global copper supply deficit is projected to widen due to the twin pressures of the energy transition and industrial AI demand. By proving up secondary copper assets alongside its primary gold production, Lundin Gold is positioning itself to capture the premium associated with multi-commodity producers.
Ecuador’s Mining Landscape: A Shift in Perception
For years, Ecuador was viewed as a high-risk jurisdiction for mining investors, often overshadowed by its neighbors Peru and Chile. However, the successful operation of Fruta del Norte and the development of SolGold’s Cascabel project have begun to shift that narrative.
The Ecuadorian government has signaled continued support for the sector, recognizing mining as a critical driver of foreign direct investment. While regulatory hurdles and local community permitting remain complex, the “Lundin Model” of high-standard ESG and community engagement has set a blueprint for success in the region.
The discovery of seven porphyry centers suggests that the Cordillera del Cóndor may host a cluster of deposits similar to the world-class porphyry belts found in Chile. For investors and operators, the critical question remains the timeline for permitting and the eventual integration of these assets into a regional hub-and-spoke production model.
2027 Outlook and Key Milestones
The roadmap for the Sandia project is now clearly defined. With four drill rigs currently active on-site, the company is focused on gathering the necessary data density to support the maiden MRE.
Key milestones to watch over the next 12–18 months include:
- H2 2026: Investment decision on the “Mine-to-Mill” expansion study to increase throughput beyond 5,500 tpd.
- Q4 2026: Final assays from the 133,000-meter regional drilling program.
- Early 2027: Release of the Sandia Maiden Mineral Resource Estimate.
- 2027: Possible commencement of a Preliminary Economic Assessment (PEA) for a standalone or integrated porphyry operation.
As Lundin Gold continues to de-risk its exploration pipeline, the market will likely look for clarity on how these copper-heavy discoveries will be financed and developed. Given the proximity to FDN, shared infrastructure and logistical synergies are expected to be primary drivers of future project economics.
Summary of Risks
While the exploration results are encouraging, several risks persist:
- Geological Uncertainty: Early-stage scout drilling does not guarantee economic viability.
- Permitting: Ecuador’s permitting process remains rigorous and subject to regional political shifts.
- Commodity Prices: Significant fluctuations in copper and gold prices could impact the required internal rate of return (IRR) for future developments.
For more insights on global porphyry hits, see our coverage of high-grade discoveries in British Columbia and stay updated with the latest Skillings Mining Intelligence reports.
