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

Core Insights - Marimaca Copper Corp. has announced further drilling at the Pampa Medina deposit, extending the high-grade sediment-hosted manto system by 300 meters to the west [1][4] - The company is executing a 10,000-meter extensional drilling program with three rigs currently on site [1] - Significant intersections from the latest drill hole SMRD-16 include 70 meters at 1.0% Cu and 116 meters at 0.61% Cu, indicating strong mineralization potential [3][4] Exploration Results - Hole SMRD-16 has extended the high-grade manto system 300 meters west, confirming a broad zone of high-grade copper mineralization [4][11] - The drilling has defined a mineralized stratigraphy across a 1.2 km by 1.2 km area, with true thicknesses averaging between 50 meters to 100 meters [5][11] - The exploration model indicates a unique stratiform, sediment-hosted copper system with extensive high-grade sequences [4][5] Geological Context - Pampa Medina is characterized by Jurassic-Triassic sedimentary units, with copper mineralization observed in both oxide and sulphide forms [9][52] - The deposit is located in a favorable area with proximity to existing infrastructure, which is expected to facilitate future development [4][9] - The geological model has been updated following the consolidation of the project area, identifying productive horizons for future drill targeting [10][52] Future Plans - The company plans to continue extensional drilling to define the limits of the mineralized system and will also focus on an infill campaign to delineate updated resources [7][9] - The strategy includes advancing the Pampa Medina and Madrugador Oxide projects to grow copper cathode production and extend mine life [8][9] - Upcoming exploration work will include geophysical surveys and deeper drilling campaigns to assess potential extensions [57]