Marimaca Copper drills 70 m of 1% Cu at Pampa Medina
Executive Summary
- Marimaca Copper reports high‑grade sediment‑hosted copper mineralization extended 300 m westward at the Pampa Medina deposit (hole SMRD‑16).
- Significant intersections include 70 m @ 1.0 % Cu (including 10 m @ 4.2 % Cu) and multiple sulphide zones up to 12.0 % Cu.
- The mineralized envelope now spans a 1.2 km × 1.2 km area and remains open to the north and west, supporting plans for further step‑out and infill drilling.
Key Details
- Hole SMRD‑16 (true width ≈95 % of reported):
- 70 m @ 1.0 % Cu from 434 m depth (includes 10 m @ 4.2 % Cu from 438 m).
- 116 m @ 0.61 % Cu from 516 m (highlights: 8 m @ 1.8 % Cu at 528 m, 10 m @ 1.2 % Cu at 568 m, 20 m @ 1.1 % Cu at 612 m).
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50 m @ 0.53 % Cu from 744 m (includes 10 m @ 1.1 % Cu at 782 m).
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Hole SMRD‑15: 42 m @ 0.51 % Cu from 158 m depth, confirming uplifted eastern extension and near‑surface oxide mineralization.
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Hole SMRD‑13 (300 m west of SMRD‑15): 6 m @ 12.0 % Cu from 594 m within a broader 26 m @ 4.1 % Cu zone; also 100 m @ 1.3 % Cu from 580 m.
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Historical holes (context):
- SMRD‑02: 40 m @ 2.1 % Cu from 282 m; 132 m @ 1.0 % Cu from 278 m.
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SMRD‑12: 56 m @ 1.4 % Cu from 566 m.
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Project scale: Mineralized stratigraphy now defined across a 1.2 km × 1.2 km area; open to further west and north step‑outs.
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Infrastructure advantage: Proximity to existing mines (MOD, Sierra Gorda, Mantos Blancos, Spence, Antucoya) and regional powerlines, water pipelines, ports; low altitude flat terrain reduces permitting risk.
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Assay protocol & QA/QC: Continuous 2 m sampling, core splitting, standard drying‑crushing‑pulverizing procedures; assays for total Cu (%CuT) and acid‑soluble Cu (%CuS); blanks, standards, duplicates employed with acceptable results.
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Qualified Person: Sergio Rivera, VP Exploration, qualified under NI 43‑101 and JORC 2012.
Notable Quotes
“SMRD‑16 is a farther 300 m step out to the west of the previously announced SMRD‑12 and has intersected a similar broad zone of high‑grade copper mineralization… We see enormous potential for a large‑scale, highly economic, underground copper mining opportunity.” – Hayden Locke, President & CEO
“Our strategy remains to step out significantly to try to define the limits of what is a very large system… we will now also turn our attention to planning an infill campaign … with the objective of delineating updated resources for the project.” – Sergio Rivera, VP Exploration