High-Grade Sediment Hosted Mineralization Extended at Pampa Medina - 300m Western Step-out SMRD-16 Intersects 10m of 4.2% Cu within 70m of 1.0% Cu

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[{"type":"text","content":"High-Grade Sediment Hosted Mineralization Extended at Pampa Medina – 300m Western Step-out SMRD-16 Intersects 10m of 4.2% Cu within 70m of 1.0% Cu\n\n\n\n VANCOUVER, British Columbia, Aug. 15, 2025 (GLOBE NEWSWIRE) --\n \n Marimaca Copper Corp. (“Marimaca Copper” or the “Company”)\n \n\n (TSX:MARI, ASX:MC2)\n \n is pleased to announce further drilling at the Pampa Medina deposit, extending the high-grade sediment-hosted manto-system 300m to the west from previous drilling. Pampa Medina is located at low altitude approximately 28km east of the Company’s Marimaca Oxide Deposit (“MOD”) in a flat “pampa” valley within the Atacama Desert (Figure 1). The Company is executing a 10,000m extensional drilling program with three rigs currently on site.\n \n\n\n Highlights\n \n\n\n\n\n Hole SMRD-16 extends the high-grade manto-system a further 300m to the west, with varying depths of the oxide to sulphide transition (Figure 1 and 4)\n \n\n\n\n Further validation of the Pampa Medina exploration model: a unique stratiform, sediment hosted, copper system with extensive high-grade sequences\n \n\n\n\n\n\n Interbedded sandstone, shale and conglomerate units continue to deliver the highest-grade zones (>1% Cu) across broad thicknesses\n \n\n\n\n The favourable mineralized stratigraphic sequence is now defined by drilling across a 1.2km x 1.2km area at the Pampa Medina deposit and remains open – extensional drilling will focus on the north and the west\n \n\n\n\n Highlights from SMRD-16 (true widths estimated to be 95% of reported intersection):\n \n\n\n\n 70m of 1.0% from 434m including:\n \n\n\n\n 10m of 4.2% Cu from 438m downhole within 30m of 2.1% Cu from 434m (Figure 3)\n \n\n\n\n Oxide and secondary sulphide\n \n\n\n\n\n\n 116m of 0.61% Cu from 516m including:\n \n\n\n\n 8m of 1.8% Cu from 528m (sulphide)\n \n\n\n\n 10m of 1.2% Cu from 568m (sulphide)\n \n\n\n\n 20m of 1.1% Cu from 612m (sulphide)\n \n\n\n\n\n\n 50m of 0.53% Cu from 744m including:\n \n\n\n\n 10m of 1.1% Cu from 782m (sulphide)\n \n\n\n\n\n\n\n\n Hole SMRD-15 demonstrates uplifting of the eastern extension, with a broad zone of near-surface oxide mineralization intersected at 122m down hole in hosted by remnants of sediments just above the contact with basement rocks\n \n\n\n\n SMRD-15 intersecte...

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