Mirasol ties high-grade gold-copper surface samples at Sobek to a deep resistivity anomaly, sharpening the drill target at the VN-Zone before the next campaign in Chile's Vicuña District.
Mirasol Resources has tied the high-grade gold-copper surface samples at its Sobek project in Chile to a deep resistivity anomaly, giving the company a clearer target for the next drill campaign. The VN-Zone, a cluster of rock-chip results including 5.03 g/t gold with 2,200 ppm copper and 4.50 g/t gold, sits above a strong resistivity contrast that increases with depth, according to a geophysical survey the company released Thursday.
The Induced Polarization Pole-Di-Pole survey outlined a structurally controlled resistivity feature beneath the surface mineralization. Mirasol's geologists interpret the relationship as evidence that the gold-copper showings are controlled by discrete structures and lithological contacts within the broader Sobek Central corridor. The company plans follow-up work to evaluate how the banded quartz veining at surface connects to the subsurface geophysical anomaly before committing to drilling.
Two diamond holes drilled this season at the 46 South target, about 300 meters south of the VN-Zone, returned anomalous gold intervals that confirm the hydrothermal system extends southward. Hole S46-DDH-002 intersected structurally controlled, oxidized dacitic rocks with hydrothermal breccias and crackle textures. The results are early-stage but keep the southern extension alive as a target.
At the north end of the corridor, the Green Wall target shows a separate copper-rich trend. Surface samples returned 14.7% copper and 131 g/t silver from narrow sub-meter structures. Mirasol now interprets those within a broader northwest-trending mineralized corridor controlled by structures near the contact between sedimentary and volcanic units. The presence of preserved copper sulphides – chalcocite, relict bornite, neodigenite – alongside oxides suggests the surface values may be the oxidized expression of a larger concealed copper system, the company said.
Sobek sits 7 kilometers west of the Filo del Sol gold-copper deposit and 3 kilometers southwest of NGEx Minerals' Lunahuasi discovery, both in the Vicuña District of northeast Chile. Mirasol staked the project in 2016, before either discovery, and has been consolidating ground in the district since.
President Tim Heenan said the company continues to prioritize drill targets while integrating geophysical, geochemical, and geological data. The VN-Zone and Green Wall remain the two most advanced targets within the Sobek Central corridor, with no drilling yet at either.
Mirasol is self-funding the Sobek exploration. The company has over 20 years of operating experience in Chile and Argentina and maintains a pipeline of earlier-stage projects alongside the flagship.
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