Quimbaya Identifies Mineralized High-Sulfidation Porphyry System at Surface at Tahami

Executive Summary

• Quimbaya Gold reports the discovery of a large, multi‑kilometre Cu‑Mo‑Au porphyry‑style target at surface within its 100 % owned Tahami Center Project in Antioquia, Colombia.
• The target covers a 2.0 km × 1.4 km footprint and exhibits complete porphyry alteration zonation (potassic, quartz‑sericitic, advanced argillic) together with visible copper‑molybdenum mineralization and active artisanal gold workings.
• Preliminary rock channel and stream sediment assays show notable Cu, Mo and Au grades (e.g., 2.10 m @ 0.12 % Cu, 301 ppm Mo, 0.10 g/t Au; stream sediments up to 304.5 ppm Cu, 66 ppm Mo, 0.29 g/t Au), underscoring the exploration potential of the district‑scale system.

Key Details

• Target Size & Location: 2.0 km × 1.4 km surface footprint, ~2.5 km NE of active Tahami South drill program; within same corridor as Aris Mining’s Segovia operations.
• Alteration Zonation (Terraspec confirmed):
• Potassic zone – biotite‑magnetite ± albite
• Phyllic overprint – quartz‑sericite
• Advanced argillic lithocap – alunite, pyrophyllite, dickite, kaolinite
• Veinlet Suite: Full porphyry veinlet sequence (A, M, EB, B, D) mapped across multiple stations.
• Surface Mineralization Observed: Copper oxides, molybdenite, chalcocite, chalcopyrite, copper sulfates (chalcanthite, brochantite).
• Preliminary Geochemistry – Rock Channels: 2.10 m @ 0.12 % Cu, 301 ppm Mo, 0.10 g/t Au.
• Preliminary Geochemistry – Stream Sediments (selected samples):
• Robusta: 8 ppb Au, 137.6 ppm Cu, 66 ppm Mo
• Robusta: 7 ppb Au, 304.5 ppm Cu, 19 ppm Mo
• Robusta: 289 ppb Au, 133.1 ppm Cu, 24 ppm Mo
• Bourbon: 123 ppb Au, 157.8 ppm Cu, 27 ppm Mo
• Assay Status: Pending assay results for an additional 54 m of underground channel rock samples and 8 stream sediment samples.
• QA/QC: Samples processed by SGS (Medellín & Peru) with standard QA/QC protocols; insertion rate 12.5 % indicating acceptable data quality.
• Qualified Person: Ricardo Sierra, AusIMM, Vice President Exploration, reviewed and approved technical information under NI‑43‑101.

Notable Quotes

“This kind of result doesn’t come as a surprise… the fact that it’s so close to where we’re actively drilling at Tahami South makes it a natural extension of our exploration work.” – Alexandre P. Boivin, President & CEO

“Identifying a textbook porphyry system with visible copper and molybdenite at surface… strongly validates our district‑scale model at Tahami.” – Ricardo Sierra, VP Exploration