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TARGET #1
Cerro
Blanco
Cerro Blanco represents one of San Lorenzo’s most promising targets within the Salvadora property. Located in Chile’s prolific Mega Porphyry Belt, the target area exhibits multiple hallmarks of a large, mineralized porphyry system — now validated by initial drilling.
KEY HIGHLIGHTS
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Discovery hole intersected 153.5 m of 1.04 g/t gold, confirming the presence of a gold-rich porphyry system
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Over 2 km of exposed alteration zone at surface
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Strongly anomalous copper and gold values in soil and rock samples
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Subsurface chargeability anomalies identified through IP geophysics
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Situated on the margin of a collapsed caldera, adjacent to the world-class El Salvador mine
INVESTOR TAKEAWAY
Cerro Blanco now transitions from a promising geophysical and geochemical target to a confirmed discovery. The scale, grade, and continuity observed in the first drill hole support aggressive follow-up drilling and significant upside potential.
CERRO BLANCO 2024-2025 DRILL PROGRAM
Strong Early-Stage Results
Drilling initiated at Cerro Blanco in December 2024 has returned strong early-stage results, confirming a large, open-ended porphyry system with significant mineralization at depth.
KEY DISCOVERY HIGHLIGHTS:
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All three holes intersected gold mineralization from surface to depth.
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Drill results correlate strongly with IP chargeability zones and surface geochemistry.
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Potassic alteration at depth suggests proximity to a porphyry core, similar to the nearby El Salvador mine complex.
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The target remains open in all directions.
“The three holes in the maiden drill test of the Cerro Blanco target area were sited to test varied combinations of IP chargeability and surface geochemistry. All three holes, located roughly 500 metres from each other, reported substantial gold intercepts, highlighting Cerro Blanco as a large and well-mineralized system.”
- Al Kroontje, San Lorenzo’s CEO
CERRO BLANCO TARGET LOCATION
Strategically Positioned in Chile’s Mega Porphyry Belt
The image (left) highlights the Cerro Blanco target zone, located just 15 km north of the >1Bt El Salvador copper-gold porphyry mine.
EXPLORATION NOTES
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Extensive white leach cap and argillic alteration, indicative of potential mineralization at depth.
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Alteration features match those found at nearby producing porphyry systems.
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Surface soil and rock assays confirm the presence of enriched gold and copper values.
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Located on the rim of a structural caldera, a setting commonly associated with significant porphyry development.
INVESTOR TAKEAWAY
This is a prime geological setting—one proven to host major deposits in Chile. Early-stage findings validate the potential for large-scale discovery.
HYDROTHERMAL ALTERATION
Alteration Bands Visible For 1.2 Km Along River Valley Floor
The image (right) is taken from the valley floor looking south, clearly illustrating a significant alteration zone that rises approximately 250 vertical metres to the ridge top.
EXPLORATION NOTES
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The highly altered rock exposed at surface is the result of hydrothermal fluids rising from a deep-seated magmatic source—evidence of a powerful mineralizing system at depth.
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The system spans ~1.5 km in width with at least 250 m of visible thickness.
INVESTOR TAKEAWAY
This level of extensive and intense alteration is typically associated with major geological events, such as those responsible for porphyry or epithermal deposit formation. The presence of both IP anomalies and geochemical support makes Cerro Blanco a compelling drill target.
SOIL SAMPLING
Copper and Gold Zones Defined by Surface Geochemistry
The map (left) shows the location of 12 anomalous samples collected during the December 2023 surface sampling campaign. Green points indicate elevated copper values; red points indicate elevated gold values. IP survey lines are overlaid to show the corresponding chargeability anomaly.
EXPLORATION NOTES
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Third-phase surface program completed in December 2023
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57 soil samples collected across the Cerro Blanco target
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IP survey conducted in parallel to support geochemical interpretations
INVESTOR NOTES
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Gold-rich samples are concentrated in the northwest
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Copper-rich samples are primarily located in the southeast
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The pattern suggests a classic zonation—consistent with a large mineralized system at depth, potentially indicating porphyry-style copper and epithermal gold zone
COMPILATION & INTERPRETATION
Integrated Geophysics
+ Geochemistry
Compilation map (left) of soil, rock, and IP data shows two major N-S trending anomalies, each 500–1100 metres wide and open in several directions.
EXPLORATION NOTES
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IP survey indicates robust chargeability anomalies aligned with geochemical highs
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Data supports a multi-phase hydrothermal system with mineralization at depth
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Planning underway for access and drill mobilization
INVESTOR TAKEAWAY
The scale and consistency of anomalous zones confirm Cerro Blanco’s readiness for targeted drilling.
SUMMARY & NEXT STEPS
Multi-Million-Ton
Resource Potential
Recent drilling has confirmed Cerro Blanco as a significant, newly identified gold-rich porphyry system within the Salvadora property.
KEY HIGHLIGHTS
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Discovery hole (Hole 1) intersected 153.5 m @ 1.04 g/t Au, including high-grade intervals up to 12.78 g/t Au.
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Hole 2 returned 85.7 m @ 1.02 g/t Au, including 4.0 m @ 8.14 g/t Au.
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Hole 3 intersected 93.6 m of mineralized gold, including:
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24.0 m @ 1.28 g/t Au
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10.5 m @ 1.63 g/t Au
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13.4 m @ 1.08 g/t Au
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Mineralization remains open in all directions and to depth.
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All three holes correlate strongly with existing IP chargeability and surface geochemical data.
NEXT STEPS
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Conduct additional IP coverage to expand geophysical interpretation.
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Plan and execute a second-phase drill program to test deeper porphyry potential and lateral system extent.
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Finalize technical reporting and target refinement using core logging, geochemistry, and IP data.