Super Copper identifies IOCG-style system at Castilla

Executive Summary

• Super Copper Corp. released geological interpretations from its Phase 1 surface sampling and mapping program at the 100%-owned Castilla copper-gold project in Chile’s Atacama region.
• The company identifies the project as a large-scale, structurally controlled Iron-Oxide-Copper-Gold (IOCG) system, characterized by extensive strike continuity (up to 500m), vertical continuity (historical workings to 50m), and high-grade surface mineralization.
• Next steps include property-wide magnetics and Induced Polarization (IP) surveys to refine drill targeting for Phase 2 drilling.

Key Details

• Deposit Type: Identified as an IOCG system, associated with some of the world's largest copper-gold mines.
• Strike Continuity: Mineralized vein systems and mine workings have strike lengths of up to 500 meters within the project and up to 700 meters within the district; remains open along strike and under shallow cover.
• Vertical Continuity: Historical underground workings confirm mineralization to depths of at least 50 meters; no modern drilling has been conducted to test depth extensions.
• High-Grade Surface Results: Select samples returned values up to:
  • 53.8 grams per tonne gold (g/t Au)
  • 17.7% copper (Cu)

  • 50% iron (Fe)

• Geological Setting: Mineralization is hosted within Cretaceous-age plutonic rocks (quartz diorite to tonalite) within a belt of Upper Triassic to Lower Cretaceous intrusive units.
• Mineralization Style 1 (High-Grade Veins):
  • Dense vein swarm of gold- and copper-bearing quartz and quartz-carbonate veins.
  • Trend: Predominantly north-northeast, north-south, and northwest; dipping subvertically.
  • Dimensions: Veins range from 0.5 to 3.0 meters in width, with mapped strike lengths from 20 meters up to 500 meters.
  • Mineralogy: Quartz with pyrite, chalcopyrite, chalcocite, covellite, and secondary minerals (malachite, chrysocolla).
  • Alteration: Boxwork textures and oxidation products indicate a well-developed near-surface oxidation zone.
• Mineralization Style 2 (Massive Iron Oxide Core):
  • Located in the central portion of the project, interpreted as the core of the IOCG system.
  • Composition: Dominated by specular hematite and magnetite, locally associated with copper sulphides.
  • Dimensions: Iron oxide bodies range from 1 to 3 meters in width and extend 10 to 300 meters along strike.
  • Historical Production: Selectively mined in the 1960s with reported iron grades between 60% and 66% Fe.
• Strategic Location: Situated within the Atacama Fault system, a primary structural corridor for major copper-gold mineralization in northern Chile.
• Next Steps (Phase 2 Planning):
  • Further property-wide detailed sampling and mapping.
  • Property-wide magnetics survey to map magnetite-bearing zones (IOCG veins, breccia zones, skarns).
  • Induced Polarization (IP) geophysics to map sulphide concentrations and identify high-priority targets at depth.
  • Integration of 3-D magnetic inversions with IP chargeability and resistivity data to finalize drill locations.
• QA/QC: Samples submitted to ALS Group Chile (prep in Copiapo, analysis in Peru). Gold analyzed by fire assay with AAS/gravimetric finish; Copper analyzed via four-acid digestion ME-MS61.

Notable Quotes

• "Our phase 1 work confirms that Castilla is not a collection of isolated veins, but a structurally coherent and potentially large IOCG system," said Zachary Dolesky, chief executive officer of Super Copper. "The combination of very high-grade gold and copper at surface, extensive strike continuity, and a well-developed iron oxide core suggests the system strengthens at depth. Importantly, many of these structures extend beneath shallow cover, indicating significant exploration potential beyond what is currently exposed."