COPPER GIANT EXTENDS THE MOCOA COPPER PORPHYRY EAST, INTERSECTING COPPER MINERALIZATION IN ZONES PREVIOUSLY MODELLED AS WASTE
- 656-metres at 0.52 % CuEq* (0.39% Cu and 0.03% Mo), starting from surface, in step–out hole MD–046 underpins near–term resource growth and district–scale potential
- MD-046 includes 72 metres at 0.92% CuEq* (0.74% Cu and 0.05% Mo), starting from 304.48m, within current constrained shell potentially a significant extension to the east of the northernly plunging high-grade core
- Copper mineralization occurs beneath the current constrained shell in ground previously classified as waste
- Holes MD0-43, MD-044, MD-045 and MD-046 together cover an extensive 1,000-metre by 600-metre block down approximately 1,000-metres of depth of continuous mineralization starting at surface - confirm continuity, scale, and high-grade zones, supporting a potential multi-billion tonne porphyry system
- Second rig mobilized and original rig moved to a new pad to accelerate expansion with significant step-outs and new target testing
Hole MD-046
Copper Giant continues to advance its 14,000-metre resource expansion drilling program at the Mocoa porphyry deposit. Hole MD-046 represents a pivotal step-out to the east, marking the third hole of the campaign. The drill hole was strategically designed to test the eastern extension of the deposit and target both lateral and vertical continuity in a zone previously untested by drilling and modeled as waste (see figure 1). Importantly, this hole intersected strong mineralization well below the base of the current pit-constrained resource design (see figure 2 and table 1).
Detailed anaconda logging of drill hole MD-046 shows multiple stages of hydrothermal alteration, providing insights into the complex hydrothermal evolution of the deposit. The first 90m intersected a strongly argillized dacite porphyry with multiple generations of D-veinlets, locally altered to iron oxides. Below this depth, the hole intercepted an early potassic-altered (K-feldspar) porphyry (E0 and E1), hosting well-developed A-type veinlets and disseminated chalcopyrite and molybdenite mineralization (see figure 3A). As drilling progressed, MD-046 intercepted an intermineral porphyry unit with intense sericite alteration, locally brecciated (see figure 3B). This unit contains multiple C-type (chalcopyrite-dominant) veinlets cross-cutting earlier B-type (molybdenite-dominant) veinlets, indicative of a complex and prolonged mineralization history (see figure 3C).
MD-046 |
From (m) |
To (m) |
Interval (m) |
Cu% |
Mo% |
CuEq* |
|
0 |
1,007 |
1007 |
0.28 |
0.02 |
0.38 |
including |
137.47 |
966.65 |
829 |
0.33 |
0.03 |
0.44 |
and including |
137.47 |
793.22 |
656 |
0.39 |
0.03 |
0.52 |
and including |
304.48 |
793.22 |
489 |
0.42 |
0.03 |
0.57 |
and including |
304.48 |
376.25 |
72 |
0.74 |
0.05 |
0.94 |
and including |
531.3 |
793.22 |
262 |
0.42 |
0.02 |
0.52 |
Table 1 - Assay results for drill hole MD-046. *Copper equivalent (CuEq) for drill hole interceptions is calculated as: CuEq (%) = Cu (%) + 4.2 × Mo (%), utilizing metal prices of Cu -
Below 700-metres down-hole, MD-046 intercepted a newly discovered early propylitic-altered quartz-diorite unit (E2) overprinted by potassic alteration defined by A-type and K-spar veinlets (see figure 3D) and intruded by the intermineral sericite-altered dacite porphyry unit. Hole was ended over an early diorite porphyry (E0) with multiple A-type veining.
Results from MD-046, together with previous holes MD-043, MD-044, MD-045 (for more details refer to news releases dated
- Early magmatic pulses: (E0) - related to the intrusion of a potassic altered (secondary biotite) micro-diorite porphyry with disseminated chalcopyrite and molybdenite. (E1) – related to a second early intrusion of a potassic altered (Kspar) quartz-diorite with EB-veining crossing by late A and K-spar veining. (E2) – related to a propylitic-altered quartz-diorite with multiple overprinting K-spar and A-type veining.
- Intra-mineral magmatic pulse: (I1) – related to a strong sericite altered dacite porphyry with multiple C and B-type veinlets generations and locally overprinted potassic alteration.
- Brecciation stage: brecciation (Bx) – three breccias have been recorded within the porphyry system. This stage is characterized by the introduction of third generation of chalcopyrite and a second generation of molybdenite as a matrix-infill. A notable feature within the breccia is the presence of early potassic-altered porphyry fragments (E0 and E1), which exhibit truncated A-type and K-spar veinlets, as well as strongly phyllic-altered intra-mineral dacite porphyry fragments (I1) containing early C and B-type veinlets.
These features support the interpretation of a well-preserved, multi-phase porphyry system potentially influenced by more than one magmatic center with multiple magmatic-hydrothermal pulses, each contributing to the metal endowment. The interplay of early, intra-mineral, and late-stage brecciation events, as well as vein overprinting relationships, point to a large, dynamic porphyry system with room for further growth.
The multi-phase intrusion history, overlapping vein generations, and zoned alteration footprint confirmed across multiple holes are all hallmarks of a well-preserved, large-scale porphyry system.
Qualified Person and Technical Notes
*Copper equivalent (CuEq) for drill hole interceptions is calculated as: CuEq (%) = Cu (%) + 4.2 × Mo (%), utilizing metal prices of Cu -
Mineralized zones at Mocoa are bulk porphyry-style zones and drilled widths are interpreted to be very close to true widths.
Copper Giant operates according to a rigorous Quality Assurance and Quality Control (QA/QC) protocol consistent with industry best practices. Core diameter is a mix of HQ and NQ depending on the depth of the drill hole. Diamond drill core boxes were photographed, sawed, sampled and tagged in maximum 2-metre intervals, stopping in geological boundaries. Samples were bagged, tagged and packaged for shipment by truck from Copper Giant's core logging facilities in Mocoa,
About the Mocoa Porphyry System
The Mocoa project is located in the department of Putumayo, approximately 10 kilometres from the town of Mocoa in southern
Discovered in 1973 through a regional geochemical survey by the
The deposit is hosted in Middle Jurassic dacite and quartz-diorite porphyries intruding andesitic to dacitic volcanics, within
The system features over 1,000 metres of vertical continuity, overlapping hydrothermal stages, and a broad alteration footprint. Multiple intrusive phases, brecciation events, and vein generations suggest a dynamic magmatic-hydrothermal evolution likely driven by more than one porphyry center.
Mocoa remains open in all directions, with several satellite targets identified across the broader land package. These features support the interpretation of a district-scale porphyry system and position Mocoa as one of the most significant undeveloped copper-molybdenum assets in the Andes
1
For further information refer to National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101") Technical Report, entitled "Technical Report on the
About Copper Giant
The Company is led by a team with uncommon experience, having successfully taken some of the few major copper mines developed in the past two decades from discovery through to construction.
Copper Giant's current focus is the Mocoa copper-molybdenum deposit in southern Colombia, one of the largest undeveloped resources of its kind in the
Guided by the values of respect and responsibility, and grounded in its Good Neighbor philosophy, Copper Giant is committed to creating enduring value for all stakeholders and playing a meaningful role in the global energy transition.
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This news release includes forward-looking statements that are subject to risks and uncertainties. All statements within, other than statements of historical fact, including statements regarding the drilling results of MD-046, the outcome of the Company's current resource expansion strategy; other activities and achievements of the Company, including but not limited to: the timing and success for the advancement of the
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