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Pecoy Project

Pecoy Project

Overview

Location Arequipa Province, Peru
Ownership 100% Pecoy Copper Corp.
Deposit Type Porphyry system
Mineralization Copper-Gold-Molybdenum-Silver

Summary

The Pecoy Project is a large-scale, open-pit copper–gold–molybdenum porphyry system covering 9,975 hectares across 19 concessions in southern Peru’s Coastal Copper Belt, part of the same district hosting major deposits such as Cuajone, Toquepala, and Cerro Verde. With an inferred resource of 865 million tonnes grading 0.34% Cu (6.45 billion lbs contained copper) plus gold, silver, and molybdenum credits, Pecoy ranks among the largest undeveloped copper deposits in Peru. Fully consolidated under Pecoy Copper Corp., the project offers significant potential for integrated growth and sustainable development.

Ownership Pecoy is 100% owned by Pecoy Copper Corp.
Location Pecoy lies approximately 275 km northwest of the city of Arequipa and 85 km north of the coastal town of Ocoña, within the Condesuyos Province of southern Peru. The project sits at an elevation of ~1,650 m above sea level, significantly lower than most Andean copper deposits, enabling year-round access and efficient logistics. It benefits from proximity to the Pan-American Highway, grid power, skilled labor, and deep-water ports at Matarani and Ilo.

Location Map

Mineral Resources

As of April 30, 2025, the project hosts an Inferred Mineral Resource of 865 million tonnes grading 0.34% Cu, 0.012% Mo, 0.05 g/t Au, and 1.33 g/t Ag, containing over 6.45 billion pounds of copper (NI 43-101, Mining Plus 2025). The resource is reported within a Whittle pit shell using a 0.23% Cu cut-off and remains open in all directions. Future drilling will target resource conversion and extensions along strike and at depth.

PECOY – Inferred Resources (100% basis)
Cut-off Tonnage Grade Contained
% Cu M tonnes Cu % Mo % Au ppm B Lbs Cu
0.15 2,278 0.24 0.010 0.03 12,053
0.20 1,302 0.29 0.011 0.04 8,324
0.23 865 0.34 0.012 0.05 6,451
0.25 742 0.36 0.012 0.05 5,889
Notes [ + ]
  1. Mineral Resources are not Mineral Reserves and have not demonstrated economic viability.
  2. The MRE has been categorized in accordance with the CIM Definition Standards (CIM, 2014).
  3. All figures are rounded to reflect the relative accuracy of the estimates. Minor discrepancies may occur due to rounding to appropriate significant figures.
  4. The Mineral Resource was estimated by Ms. Muñoz QP (MAIG) of Mining Plus, Independent Qualified Person under NI 43-101.
  5. The effective date of the Mineral Resource Estimate is 30 April 2025.
  6. The Mineral Resource is reported inside a whittle pit shell with a cut-off grade of 0.23 % copper, estimated using a copper price of US$/lb 3.25, molybdenum price of US$ 8/lb, gold price of US$ 1,400/oz and silver price of US$ 20/oz.
  7. Mining Plus is not aware of any legal, political, environmental

Geology

The Pecoy deposit is a classic calc-alkaline porphyry copper system hosted within Paleocene–Eocene intrusive rocks of the Peruvian Coastal Batholith. Mineralization occurs primarily in granodiorite and porphyritic intrusions associated with strong potassic and phyllic alteration, with copper present mainly as chalcopyrite and bornite, accompanied by molybdenite, gold, and silver.

A key feature of the system is the presence of extensive breccia bodies, particularly in the South Breccia Zone, which hosts higher-grade copper and gold mineralization. These breccias represent zones of intense hydrothermal activity and fluid flow, contributing significantly to metal enrichment within the broader porphyry system. Structural controls trend northeast–southwest, aligning with the regional mineralized corridor that also hosts the Cerro Verde and Zafranal deposits.

Geology

Metallurgical Testwork

Preliminary metallurgical testing by C.H. Plenge & Cía. S.A. in Lima, Peru, included flotation, comminution, mineralogy, and column leach tests on primary and supergene composites. Flotation results produced clean, saleable copper concentrates with gold, silver, and molybdenum credits and no deleterious elements, achieving 70–93% Cu recovery and concentrate grades above 26% Cu. Column leach tests on supergene material indicated ~60% copper recovery using conventional acid heap leaching.

Description CU (%) MO (%) AU (%) AG (%)
Oxide and Supergene 69.9 32 36.3 67
South Breccia 88.5 70 55.1 --
Primary (Granite) 93.3 72 39.9 79.5
Average Results based on Proportions within the Resources
Flotation recovery 87.7 64 44.04 83.42

Exploration

Over 48,500 metres of drilling across 121 diamond drill holes have defined the current mineral resource. Historical exploration included surface mapping, soil and rock geochemistry, IP/resistivity surveys, and magnetics. Current work programs are focused on expansion drilling and updating the geological and metallurgical databases.

Exploration Potential The Pecoy deposit remains open in all directions, with three key target areas defined around the current pit outline: the Center Pit, West, and East–Southeast, and South Breccia zones. Drilling and geophysical data indicate strong potential for porphyry expansion beneath existing holes to the south, where chargeability and alteration anomalies suggest a deeper mineralized system. The South Breccia Zone also presents opportunities for higher-grade extensions within the broader porphyry system.

Location Map

Expansion and Growth

Multiple Targets for Expansion and Growth

Target Distance from Pecoy Main Description
Centre Pit In-Pit 63 Mt in middle of pit currently valued at 0% Cu due to drill spacing
Oxides In-Pit Remains open in all directions
South Breccia In-Pit & East Current mineralized zone open to northeast, east and southeast
Depth Below Pit Several historical drill holes ending in mineralization
West Pampa 500 m Current mineralized zone open to west and northwest
East Ridge 300 m Strong geochemical signature – never drilled
East 2.0 km Large 800 m x 800 m airborne K/Th anomaly with IP Chargeability at 260 m depth
Road 3.5 km 1,200 m x 400 m area of porphyry style, batholith hosted Cu oxide and sulphide mineralization - Values up
Waka Waka 2.5 km Strong geochemical signature similar to Pecoy remains undrilled and untested
Tororume 8.0 km Very large geochemistry anomalies coincident with alteration anomalies and chargeability – footprint is 3 times larger than Pecoy – only 9 drill holes

Pre-Pecoy Exploration

Prior to the Pecoy Copper consolidation, the project was independently explored as two adjoining properties with different owners and project names as follows:

  • The northern sector was called the Pecoy Project (Old Pecoy Project) and was explored by the Trafigura Group (Cormin) and Pembrook Copper Corp (Pembrook).
  • The southern sector was called the Arirahua Project, a name originally assigned by Minera Andina de Exploraciones S.A.A. (Minandex). Subsequently, it was referred to as the Ocaña Project by Indico Resources Ltd. (Indico) under a purchase option agreement signed with Minandex in 2010 and later renamed the Irmin Project in June 2015; however, the agreement was not finalized, and the property reverted to Minandex.

The historical exploration works carried out by Indico, Pembrook and Cormin are described below. The two show a summary of the results obtained from the historical surface sampling and the historical drill holes.

Sampling Summary – Au, Ag, Cu, Mo Grades
Company Type Sample N. Samples Au ppm Ag ppm Cu ppm Mo ppm
      Min. Max. Min. Max. Min. Max. Min. Max.
Indico Channels 341 0.0005 0.235 0.25 6.4 60.9 4670 0.5 945.5
Rock Chips 288 0.0004 0.698 0.5 12.4 9.0 9876.5 0.5 2110
Indico Total 629 0.0004 0.698 0.25 12.4 9.0 9876.5 0.5 2110
Cormin Channels 67 0.001 0.51 0.1 29 146 5184 5 509
Rock Chips 26 0.005 0.16 1.1 35.6 182 9180 5 483
Selective 85 0.002 0.296 0.2 82 330 13000 3 320
*Cormin Total 178 0.001 0.51 0.1 82 146 13000 3 509
Pembrook Unknown 1 0.011 0.011 0.5 1860 1860 54 54 54
Channels 529 0.0005 0.629 0.25 12.8 27 25240 0.5 557
Pembrook Total 538 0.0005 0.629 0.25 12.8 27 25240 0.5 557

*Cormin includes superficial sampling of other companies (Angloamerican, Teck, Minarsa, Orion) carried out at Pecoy Project during his administration or prior to Cormin (370 samples).

History to the north sector of the Pecoy Project (Old Pecoy Project)

The Barreno 1 and Barreno 2 concessions were obtained in the early 1980’s by the Carlessi Family, who own the Arirahua Mine (MINARSA), located 6.5 km east of Cerro Pecoy.

The Carlessi Family only carried out a minimal amount of prospecting on the property, including the collection of 178 rock samples in the mid 90’s. Subsequently, companies such as Teck Comico Ltd., Anglo and Noranda carried out surveys and sampling. In the database, Pembrook has identified 97 rock samples collected by the first 2 companies. Additionally, magnetometer and induced polarization (IP) geophysical surveys were conducted by Teck.

In 2008, the Trafigura Group (Urion México Holdings) optioned the Pecoy property, and together with the Carlessi Family, formed Pecoy Sociedad Minera (51% and 49%, respectively). Trafigura became the operator of the Project and analyzed the existing geochemical and geophysical data, conducted further mapping and sampling and undertook a drilling program in 2009.

Trafigura’s diamond drilling campaign consisted of 11 drill holes totaling 3,454.80m. The results of the program were encouraging with porphyry-type mineralization defined, but only one drill hole intersected significant mineralization. The exploration group from Trafigura (Cormin) proposed another exploration phase, but it was never completed.

In 2012, Trafigura organized a site visit for various companies with the aim of optioning the property.

Pembrook showed interest in the Project and after some coordination with Trafigura conducted a regional geological mapping exercise at a scale of 1:2000, in November 2012. Pembrook eventually signed the Subscription, Option and Shareholders’ Agreement and mining assignment agreement with the concession holder, Pecoy Sociedad Minera on August 28, 2013.

History to the south sector of the Pecoy Project (Ocaña Project)

Minera Andina de Exploraciones S.A.A. (Minandex) the initial owner of the south Sector of Pecoy Project, signed in 2010 a contract with a purchase option with Inversiones Minerales S.A.C. (Inversiones Minerales), who renamed the project the Ocaña Project. Subsequently, this company was associated with the company Indico Resources Ltd. (Indico) and in May of 2015, Indico in turn associated with the Company Aruntani S.A.C.(Aruntani), to continue developing the Project, establishing the company called Irmin S.A.C., in which Aruntani has the 70% participation and Indico the remaining 30%.

Indico developed exploration works as part of the contract with a purchase option; however, in 2015, the full right of the contract between Minandex with Inversiones Minerales was terminated, so the Ocaña Project returned to Minandex administration.

There is no recorded history of work on the Ocaña concessions prior to Indico acquiring them. There is artisanal mining throughout Peru and, based on the existing activity on the edges of the concessions, there would likely have been some activity historically. However, no records are available, and there is little surface evidence, other than a couple shallow excavations on the slope south of camp.

Initial exploration has been performed on the adjoining, non-Indico Resources, Barreno-1 and Barreno-2 concessions, administered by Pembrook Copper Corp. (Pembrook).

Pecoy Project - Technical Report April 30, 2025 PDF