Quimbaya Identifies Mineralized High-Sulfidation Porphyry System at Surface at Tahami. Surface work confirms Cu-Mo-Au mineralization, classic porphyry type style-alteration, and active gold workings, reinforcing district-scale upside at Quimbaya’s flagship project in Colombia

We received from Quimbaya Gold Inc. and we are happy to publish the following press release:

“Quimbaya Gold Inc. (CSE: QIM | OTCQB: QIMGF | FSE: K05) (“Quimbaya” or the “Company”) is pleased to report the identification of a large, multi-kilometer Cu-Mo-Au porphyry-style target at surface within its 100%-owned Tahami Center Project in Antioquia, Colombia.

Located approximately 2.5 kilometers northeast of the Company’s active drill program at Tahami South, the target spans a 2.0 by 1.4-kilometer footprint and exhibits hallmark porphyry characteristics confirmed by surface mapping, mineralogy, and geochemical anomalies.

Importantly, multiple artisanal gold workings are active within the footprint, confirming near-surface gold mineralization and reinforcing the system’s potential as a preserved porphyry system with a vertically zoned epithermal overprint.

Key Highlights

• Large Surface Footprint: 2.0 km x 1.4 km target with preliminary mapped porphyry-style alteration and veinlets.
• High-Sulfidation Epithermal Overprint: Presence of a preserved lithocap with advanced argillic alteration (alunite–pyrophyllite-dickite-kaolinite) confirms a high-sulfidation system at surface. These environments are globally recognized for hosting high-grade gold zones and often occur above or adjacent to copper-gold-molybdenum porphyry systems, supporting the interpretation of a vertically zoned, mineralized system.
• Complete Porphyry Signature: Potassic (biotite-magnetite), quartz-sericitic and advanced argillic zones confirmed by Terraspec analysis.
• Veinlet Suite: Full porphyry veinlet sequence (A, M, EB, B, D) identified across multiple stations.
• Surface Mineralization: Copper oxides, molybdenite, chalcocite, chalcopyrite and copper sulfates (chalcanthite, brochantite) observed in outcrops.
• Preliminary Geochemistry: Preliminary rock channels with 2.10m @ 0.12% Cu, 301 ppm Mo, 0.10 g/t Au; stream sediments return up to 304.5 ppm Cu, 66 ppm Mo, 0.29 g/t Au, and gold in pan.

• Strategic Location: Within the same corridor as Aris Mining’s Segovia operations and just 2.5 km from Quimbaya’s current drill pads.

Figure 1. District Location Map: Tahami South Project and Tahami Center Project.

“This kind of result doesn’t come as a surprise, it’s the outcome of years spent assembling a high-quality portfolio in a region we know well,” said Alexandre P. Boivin, CEO of Quimbaya Gold.

“What we’re seeing at surface, including artisanal mining within the footprint, is a direct reflection of the geological potential we believed was there from the beginning. 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 and a testament to the strength of the entire Quimbaya team.”

Contextual Significance

Colombia is globally recognized for its high-grade epithermal gold veins, particularly in the Segovia belt, but porphyry systems, especially those with Cu-Mo-Au potential, remain one of the country’s most underexplored geological domains. The scale, preservation, and surface expression of the mineralized system at Tahami suggest a rare geological setting with clear exploration potential. With one of the few consolidated land positions in the region, Quimbaya is well positioned to advance porphyry and high-sulfidation exploration in one of Colombia’s most productive gold districts.

Technical Overview

Surface mapping and geochemical sampling have delineated a porphyry type system consistent with preserved high-level mineralization.

• Alteration Zonation:
  • Potassic Sodic: Biotite-magnetite ± Albite
  • Phyllic overprint: Quartz-sericite
  • Advanced argillic lithocap: Alunite–pyrophyllite–dickite–kaolinite, confirmed by Terraspec (Universidad Nacional de Colombia)
• Veinlet Types:
  • A, M, EB, B, and D veinlets mapped, consistent with well-developed porphyry systems.
• Mineralization Observations:
  • Chalcopyrite, chalcocite, molybdenite in outcrops
  • Secondary copper sulfates (chalcanthite, brochantite) at surface
  • Visible gold observed during stream sediment panning

Figure 2. Preliminary geochemistry: the first two prospects have been identified in the property related with high mineralisation of copper/molybdenite and epithermal gold veins.

Table 1. Robusta Prospect underground channel rock sampling highlights

* Pending assay results for 54 meters of underground channel rock samples

Table 2. Stream sediments sampling highlights

* Pending multi-element assay results for 8 stream sediment samples

Figure 3. Porphyry Footprint outcrops with strong alteration zones, and porphyry type veinlets.

“Identifying a textbook porphyry system with visible copper and molybdenite at surface, and active gold extraction from epithermal veins strongly validates our district-scale model at Tahami,” said Ricardo Sierra, VP Exploration of Quimbaya Gold. “The alteration zoning, veinlet architecture, and early geochemical signatures are highly consistent with porphyry copper systems globally.”

Figure 4. Porphyry Footprint outcrops with strong Advance Argillic alteration and quartz-sericitic alteration.

Figure 5. Porphyry type veinlets stockwork and mineralisation. Chalcopyrite (Cpy), Chalcocite (Cc), Chalcanthite (Chal), Brochantite (Bro), Magnetite (Mt).

Sample preparation and analysis

Quimbaya Gold used SGS laboratory to prepare and assay samples collected on the Tahami Project. These include SGS Medellin and SGS Peru for preparation and analysis. SGS preparation and Fire Analysis in the SGS laboratory in Medellin Colombia, and SGS multielement analysis located in Peru.

Rock samples delivered to SGS were prepared in Medellin, samples were received and labelled, dry at 100°C +- 5°C, primary crushing in a jaw crusher to 95% passing 20 mesh, secondary crushing with roll mill ant slow revolution, cleaning with compressed air and quartz, with 85% passing 10 mesh, with every 10 sampled control and granulometry, riffle split coarse crushed sample in jones splitter, to extract 250 to 500 gr; Pulverization of samples is completed in a ring mill, with >95% passing 140 sieve and cleaning with clean sand.

Samples were assayed for Fire Assay for Au in Medellin using FAA313 and FAG303 method, and multielement analysis in Peru using ICP40B0 method.

Stream sediments samples delivered to SGS were prepared in Medellin, samples were received and labelled, previously air drying (inhouse) and dry at 60°C +- 5°C, 100% passing -80 mesh; pulverization of samples is completed in a ring mill, with >95% passing -140 sieve and cleaning with clean sand. Samples were assayed for Fire Assay for Au in Medellin using FAA313, FAG303 and AAS12C method, and multielement analysis in Peru using ICP40B, in line with QA/QC best practices.

The insertion rate is acceptable for CRM’s, field duplicates and blanks. Quimbaya Gold procedures require 7 blanks, 3 duplicates and 3 CRM’s (OREAS 501d, OREAS 506) per 104 samples submitted for the current Batch_031, Batch_032 and Batch_035″.

To date Quimbaya Gold an insertion percentage of 12.5%, sufficient to judge the quality of sampling and assaying.

The author reviewed QAQC and expresses satisfaction that they generally demonstrate a high degree of accuracy at the assaying SGS laboratory.

Standard deviations were used as control gates for submitted CRM’s (3x and 2x).

About Quimbaya

Quimbaya aims to discover gold resources through exploration and acquisition of mining properties in the prolific gold mining districts of Colombia. Managed by an experienced team in the mining sector, Quimbaya is focused on three projects in the regions of Segovia (Tahami Project), Puerto Berrio (Berrio Project), and Abejorral (Maitamac Project), all located in Antioquia Province, Colombia.

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