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Mogotes Metals is an early-stage exploration company focused on a land package straddling the Argentina-Chile border, directly south of Filo del Sol. This conversation with Technical Advisor Stephen Nano delves into the company’s geological targeting strategy, which leverages deep-penetrating geophysical surveys (IP and MT), surface geochemistry, and alteration mapping to define porphyry and epithermal drill targets, primarily at Los Mogotes and Meseta. The discussion also covers the rationale behind publishing early targeting updates, the geological basis for confidence despite limited data, anticipated drill depths and alteration zoning, structural controls, and how the company is managing both investor communication and operational logistics in preparation for a drill campaign expected to begin by late 2025.
TL;DR
- 1. Mogotes Metals is rapidly advancing a series of porphyry and epithermal drill targets along the Argentina-Chile border, using deep-penetrating geophysics and geochemical data to define high-priority anomalies.
- 2. The company’s most advanced target, Los Mogotes, exhibits strong geophysical responses and coinciding alteration and geochemical signatures, suggesting a potentially intact porphyry system at drillable depths.
- 3. Meseta, a high-elevation target to the north, displays characteristics of an epithermal system with preserved pathfinder geochemistry and breccia clasts sourced from deeper mineralized environments.
- 4. Drilling is expected to begin by late October 2025, contingent on seasonal access, permitting progress, and a bilateral Chile-Argentina accord currently in process.
- 5. The company is actively marketing ahead of drilling to maintain shareholder transparency and interest, as significant geophysical and geochemical datasets are still being processed.
Why Announce Drill Targets Before Receiving All the Data?
Mogotes Metals’ decision to release early-stage drill targeting updates before receiving full datasets stems from a deliberate strategy to maintain investor engagement through a phased, geoscience-driven communication approach. According to Technical Advisor Stephen Nano, the company chose to publish updates in “bite-sized pieces” to avoid overwhelming readers with overly technical, multi-layered releases. “There’s just so much information here,” Nano explained, citing the use of new geophysical techniques and detailed geological interpretations that require context and explanation.
This approach, he argued, also reflects transparency: “We’re using a very geoscience-driven approach here… It’s not necessarily simple things to explain.” He acknowledged that the data is preliminary and that more lines of geophysical surveying are still pending, with a 3D model and accompanying geochemical results expected soon.
How Confident Are They in These Targets?
Nano struck a cautious but optimistic tone: “Exploration is a very humbling business… there are no guarantees of discovery.” The language in their news releases – laden with caveats like “could” and “potentially” – is, in his view, necessary and responsible.
Later, Stephen highlighted the Meseta and Los Mogotes targets as standout zones, citing “the strongest geophysical responses we’ve seen so far within the property.” He emphasized that while surface copper anomalies aren’t economic on their own, they gain significance when interpreted in context with geophysics and alteration signatures.
Did the DDIP Look Beneath the Lithological Cover?
Yes.
The company employed both Deep Detection Induced Polarization (DDIP) and Magnetotellurics (MT) to penetrate beneath lithological cover.
Nano stated that DDIP reliably models to about 500 meters depth and MT to at least 1 kilometer. He noted that the Los Mogotes target is encouraging in part because the anomaly lies “hundreds of meters” below surface, relatively shallow for a porphyry setting.
Is the Chargeability Anomaly a Pyrite Halo?
Likely.
While surface sulfides are oxidized, mapping shows strong iron oxide staining and phyllic alteration typical of pyrite-rich zones. Nano added that geophysical chargeability patterns are matching mapped geology, forming a classic outer pyrite-rich halo around a conductive core, consistent with porphyry systems.
What Is Stephen’s Favorite Target?
“Certainly my favorite target at the moment,” Nano said, referring to Los Mogotes.
It sits on a major structural intersection and shows alignment with both surface alteration patterns and regional mineralized trends, including Filo del Sol.
He also highlighted Meseta to the north, at higher elevation and epithermal level, which he believes may be part of a vertically extensive porphyry-epithermal system.
What Would He Consider Success?
Nano’s expectations are benchmarked against Filo del Sol: “Hundreds of meters of Filo-like intersection grades.”
While not expecting immediate high-grade core hits, he hopes for significant copper-gold-silver intercepts suggesting a substantial system. Current surface geochemistry includes oxidized copper, molybdenum, silver, and trace elements like bismuth and antimony, considered indicators of proximity to a porphyry center.
What Is the Source of the Los Mogotes Anomaly?
Nano ruled out exotic, transported copper as the primary source. He emphasized the co-occurrence of copper with trace metals and the presence of a “stinking big geophysical anomaly” underneath. Additionally, mineral chemistry data from the phyllic halo provides a “bullseye pattern” pointing to a central heat source.
How Deep Could the Potassic Core Be?
The conductivity anomaly interpreted as a potential potassic core is estimated to start within 300 meters and be well into the target by 400 meters depth. Nano noted topographic variability and emphasized these figures are preliminary until the full 3D model is received.
How Thick Is the Litho Cap?
Only remnants of the lithocap are preserved, visible as ferruginous breccia structures at surface. The current interpretation places the exploration focus at the interface between the base of the lithocap and the phyllic alteration zone.
Do the Geophysical Anomalies Coincide with the Geochem?
Yes.
Nano described the spatial relationship as a “donut”: chargeability forms a halo, the conductivity anomaly sits in the center, and geochemical anomalies align directly over the conductive core. This co-location of geophysical and geochemical signals is a key validation step.
How Variable Are the Copper-Molybdenum Ratios?
Ratios vary significantly across the property. Targets like Colorida are copper-molybdenum porphyries with minimal gold. In contrast, Los Mogotes shows a copper-silver-gold assemblage akin to Filo del Sol. Meseta exhibits high-level epithermal pathfinders (antimony, arsenic) with some gold and silver, consistent with strong acid leaching.
What Is the Source of the Clasts?
Massive silica clasts at Meseta appear to be hydrothermally transported, possibly from a deeper porphyry source. In the western breccias, clasts are buggy silica typical of high-sulfidation epithermal systems. The eastern breccias include porphyry-style clasts, suggesting deeper derivation from a mineralized system.
How Do They Know It’s Geochemical Leakage?
Nano explained that the surface expression likely represents geochemical leakage from a deeper concealed system. The low-grade surface anomalies are associated with distal halo elements, supporting this interpretation. Drilling is needed to confirm.
Has the Exploration Target Size Changed?
Yes, slightly.
Based on preliminary geophysical lines, the conductive core at Los Mogotes is up to 800 meters wide, an encouraging footprint for a porphyry target. Nano cautioned that this estimate is based on limited data and awaits confirmation from additional geophysical lines and full 3D modeling.
What’s Happening at Cuenca?
Cuenca (or “Quanka”) is a new early-stage prospect showing gold, silver, antimony, and arsenic in veined structural zones over a 300 to 500 meter area. Alteration minerals are consistent with high-level epithermal environments. At least one geophysical line will cross the area to test for a deeper source.
What Is the Dominant Structural Control at Cuenca?
The structure follows the Macho Muerto trans-orogenic fault, with subordinate northeast-trending cross structures hosting sheared veins and anomalous geochemistry. These intersections are believed to be the main controls on mineralization.
How Do These Targets Compare to Filo del Sol?
Nano views the company’s ground as an extension of Filo del Sol, both in alteration style and structural trends. He acknowledged limited surface geochemical data from Filo for direct comparison, but stated that geologic continuity and alteration zones align.
“The grades have to improve as we drill deeper into the geophysics target or it’s not a deposit.”
Is There Magnetic Continuity Between Filo and Los Mogotes?
Unclear.
Nano has not reviewed detailed magnetics from Filo’s hole 116. However, he emphasized structural and alteration continuity between Filo and Mogotes, especially along northwest-oriented splays paralleling the Mucho Muerto Fault zone.
When Will They Be Drilling?
Assuming a typical southern hemisphere winter, drilling could begin by late October. Permitting is in progress, and the team is also pursuing a bilateral accord between Chile and Argentina to allow cross-border access. One side of the accord has already been signed.
What Are the Specific Next Steps?
Pending steps include receiving the remainder of geophysical lines, finalizing 3D modeling, incorporating geochemical and alteration data, planning access roads, and designing drill pad locations. The company is also awaiting final government approvals for bilateral access.
Why Keep Marketing Before Drilling?
Nano defended the company’s aggressive pre-drill marketing strategy: “Shareholders need to be informed how we’ve deployed their capital.” He views this as both an obligation and a strategic necessity, especially as new data flows in from both sides of the border.
What Keeps Stephen Up at Night?
“Waiting for those results to come in,” Nano admitted. The team is eager to validate early interpretations with hard data. He reiterated that more information from both the Argentine and Chilean sides will be released in the coming months.
Mogotes Metals interview with Technical Advisor, Stephen Nano.
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