VANCOUVER, BC / ACCESS Newswire / May 19, 2026 / Marimaca Copper Corp. has reported encouraging results from its ongoing exploration drilling program at the Pampa Medina deposit. This site is located approximately 28 kilometers east of the Company’s Marimaca Oxide Deposit and has shown promising continuity and scale in its sediment-hosted copper-silver mineralization.
#Latest Drilling Developments
The 2026 drilling initiative includes step-out drilling executed on 150-meter intervals, designed to evaluate the uniformity between previously conducted 300-meter drilling efforts. The results demonstrate not only significant grades but also the continuity of high-grade manto-type mineralization within an initial target area of 3 kilometers by 1.5 kilometers.
Recent findings from the exploration drilling solidify the consistency of both oxide and sulfide mineralization throughout the central high-grade zone. Notable high-grade intercepts have been documented, particularly in the southwestern zone where drilling identified a sedimentary horizon extending the mineralized area.
#Noteworthy Assay Results
Detailed analysis of drilling samples highlights several high-grade intercepts. For instance, hole SPRD-06 registered 424 meters grading 0.58% copper and 2.2 grams per tonne silver, revealing five mineralized mantos. Other drill holes, such as SPRD-02 and SWRD-05, back this up with similarly robust mineralization, affirming the deposit's significance.
#Geological Insights
Pampa Medina features a manto-style copper deposit found within Jurassic-Triassic sedimentary units, enriched with both volcanic and metamorphic elements. This complex geological setting paves the way for diverse mineral zones, primarily hosting copper minerals like atacamite and bornite, which are valued for both their copper and accompanying silver content.
Following Marimaca's consolidation of the project area in 2024 and the development of an updated geological model, the current drilling campaign is concentrated on defining the central high-grade zone, tracing oxide extensions, and testing broader mineralization possibilities acknowledged through geophysical surveys.
#Future Directions
As Marimaca Copper advances with its drilling initiatives, the company aims to further delineate the high-grade areas within Pampa Medina, which may complement its existing infrastructure at the Marimaca Oxide Deposit. The continued high-grade assay results are anticipated to bolster investor confidence and support future operational growth.
#Key Takeaways
- Marimaca Copper has reported promising assay results from its exploration drilling at the Pampa Medina deposit.
- Drilling has identified high-grade copper-silver mineralization continuity across a significant 3km x 1.5km area.
- Recent holes indicate multiple stacked high-grade mantos, enhancing the deposit's potential significance.
- The geological framework supports diverse mineralization, reinforcing the viability of ongoing exploration efforts.
- Future drilling will focus on delineating high-grade zones and expanding the discovery within the broader mineral system.
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