Mr. Charles Cryer reports

OROCO REPORTS SELECT SURFACE SAMPLE OF 7.57% COPPER AND COMPLETION OF DRONE MAGNETIC SURVEY AT VAINILLA

Oroco Resource Corp. has released preliminary results from reconnaissance rock-chip sampling and geological mapping at the Vainilla project in northern Sinaloa, Mexico, including one selective sample from the El Platano breccia pipe that returned 7.57 per cent copper. The company has also completed a high-resolution drone magnetometry survey over the property.

Highlights

• Mapping and sampling have advanced the definition of three principal mineralized areas: El Platano, Mazomique and Cristina.
• One selective rock-chip sample from a historical working at El Platano returned 7.57 per cent copper; the sample is not representative of the overall grade or continuity of mineralization.
• El Platano is interpreted as a mineralized breccia body hosting copper-iron oxides, secondary copper minerals, precious metal anomalies, quartz-tourmaline brecciation within a broad propylitic alteration halo in andesitic volcanics.
• Mapping surrounding Mazomique has identified magnetite-pyrite-chalcopyrite mineralization and copper oxides associated within exo-skarns exposed in previous mining operations.
• At Cristina, a structurally controlled breccia is host to anomalous gold, silver, copper and lead.
• A property-wide, high-resolution drone magnetic survey has been completed to assist in defining structural, intrusive, porphyry and skarn-related exploration targets.

The geological program identified structurally controlled veining, skarn-hosted copper mineralization and brecciation, hydrothermal alteration, and polymetallic mineralization across the property. At El Platano, copper mineralization is exposed in surface outcrops and historical artisanal mine workings within an alteration feature presently mapped over approximately 600 metres by up to 250 metres. These dimensions describe the mapped alteration and do not imply continuous mineralization.

"While our primary focus remains the advancement of Santo Tomas, the preliminary results at Vainilla support further systematic evaluation of this property," said Oroco chief executive officer Charles Cryer. "The combination of a selective high-grade copper sample at El Platano, widespread alteration and several distinct mineralized prospects provide a basis for disciplined target development. The proximity to Santo Tomas may also offer logistical benefits if future exploration is successful."

Vainilla project progress

The 2,973.7-hectare Vainilla concession lies approximately eight kilometres east of Choix and approximately 17 kilometres south of the South zone of Oroco's Santo Tomas project, within the Santo Tomas cluster of the belt of Laramide orogenic-association porphyry intrusions. The company holds an option to acquire a 100-per-cent interest in the Vainilla concession, subject to final approval by the TSX Venture Exchange.

Note that the company does not hold rights or title to the La Alicia, El Rosario and Cuauhtemoc concessions (total area of 78.75 hectares) internal to the Vainilla concession. Sampling at the La Alicia concession were taken with the consent of the concession holder.

Copper and local gold and silver values occur at El Platano. Additional mapping, sampling and geophysical interpretation are required to assess the extent, distribution, and geological controls of mineralization before drill targets can be finalized.

At Mazomique, chalcopyrite occurs with pyrite and magnetite in veins of replacement-style mineralization. The significance and extent of this mineralization remain to be determined through further fieldwork and integration with the drone magnetic data.

Copper and molybdenum values were returned from selective samples of intrusive breccia east-southeast of Mazomique and warrant follow-up mapping and sampling.

Drone magnetic survey

The drone survey covered approximately 3,114 hectares and comprised approximately 707 line kilometres, including 390 survey lines spaced 100 metres apart, and 35 tie lines. The data were processed to generate total magnetic intensity, reduced-to-pole and derivative products, together with preliminary three-dimensional magnetic susceptibility and magnetic-vector inversion models.

Preliminary interpretation identifies a complex northwest-trending structural and intrusive framework and three principal areas of interest with magnetic characteristics that may be consistent porphyry and skarn systems. These interpretations are preliminary, and require integration with geological mapping, geochemistry and field verification.

Next steps

Oroco is integrating the magnetic results with its geological and geochemical database to prioritize follow-up mapping and sampling. The company will also assess prospective structural intersections, intrusive contacts and magnetic anomaly margins as potential targets for further geophysical work and future drilling. Applications for drilling permits have been initiated, anticipating further positive results from more detailed mapping sampling and geophysical surveys.

Quality assurance/quality control

Blank and low-grade copper standards (as utilized in the Santo Tomas resource drilling programs) with known low-grade gold and silver values were inserted into the sample consignment sent to ALS in Hermosillo. Higher-grade copper and silver values returned are reliant upon laboratory standards for QA/QC (quality assurance/quality control) and are to be treated as indicative exploration results and not as standards-controlled assays.

Qualified person

Andrew Ware, RM-SME, a qualified person as defined in National Instrument 43-101 -- Standards of Disclosure for Mineral Projects, and a senior consulting geoscientist to the company, has reviewed and approved the technical disclosures in this news release. The company adheres to CIM (Canadian Institute of Mining) Best Practices Guidelines in conducting, documenting and reporting exploration activities.

About Santo Tomas

Oroco controls the Santo Tomas project, an advanced-stage porphyry copper project in Choix, Sinaloa, Mexico. Oroco holds a net 87.0-per-cent interest in the 1,173-hectare Core concessions and an 80-per-cent interest in surrounding concessions at Santo Tomas. The project was tested by historical drilling from 1968 to 1994 and by Oroco's phase 1 program, which totalled 48,481 metres in 76 diamond drill holes and supported the revised mineral resource estimate (MRE) and updated preliminary economic assessment (PEA) filed in August, 2024.

The August, 2024, MRE, prepared by SRK Consulting (U.S.) Inc., outlined an indicated resource of 540.6 Mt at 0.33 per cent Cu (copper), 0.008 per cent Mo (molybdenum), 0.028 part per million Au (gold) and 2.1 ppm (parts per million) Ag (silver), and an inferred resource of 530.3 Mt at 0.31 per cent Cu, 0.007 per cent Mo, 0.023 ppm Au and 1.9 ppm Ag. The updated PEA, prepared by Ausenco Engineering USA South Inc., contemplates a staged open-pit operation ramping from 60,000 tonnes per day in year 1 to 120,000 t/d by year 8 over a 22.6-year life of mine, generating an after-tax NPV (net present value) 8 per cent of $1.48-billion (U.S.) and an after-tax IRR of 22.2 per cent.

The PEA is preliminary in nature, includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the results of the preliminary economic assessment will be realized. Mineral resources that are not mineral reserves do not have demonstrated economic viability. Market conditions, metal prices, costs, exchange rates, financing conditions, permitting requirements and other assumptions may have changed since the Aug. 15, 2024, effective date.

About Oroco Resource Corp.

Oroco Resource is a Vancouver-based mineral exploration and development company advancing the Santo Tomas copper project in Sinaloa, Mexico.

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