Algo Grande Identifies Additional Skarn Mineralization 3km South of Cerro Grande, with Samples Above 3% Copper and Confirms Copper in Multiple Targets on the Property
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Algo Grande Identifies Additional Skarn Mineralization 3km South of Cerro Grande, with
Samples Above 3% Copper and Confirms Copper in Multiple Targets on the Property
VANCOUVER, BC – March 11, 2026 – Algo Grande Copper Corp. (“Algo Grande”) (TSX-V:
ALGR; OTC: KNDYF; FRA: KM00) is pleased to provide an exploration update on its 100%-
owned Adelita Project in Sonora, Mexico. The update includes the successful completion
of the Company’s Phase I drill program at the flagship Cerro Grande Skarn and the results
of a property-wide surface prospecting campaign, during which 49 rock samples were
collected, including 19 samples grading above 1% Cu.
The campaign confirmed copper–gold–silver mineralization across multiple target areas,
including Potrero South, Las Trancas, Cerro Grande Northwest, La Molina and Mezquital,
and led to the discovery of a new skarn zone at Potrero South target, located approximately
3 km south of the Cerro Grande central discovery, with over 300 metres of surface exposure
and samples exceeding 3% Cu. Additionally, the program successfully confirmed
mineralization at targets generated through the Company’s machine learning exploration
program, including the emerging La Molina target.
Enrico Gay, CEO of Algo Grande, commented: “All the data we are processing at the Adelita
project is pointing to a rich multi-deposit geological system which includes skarn-porphyry
and epithermal mineralization across the Adelita land-package. The new Skarn zone
discovered has never been drilled and represents a new high-grade copper-gold-silver
opportunity, 3km away from Cerro Grande. ”
Phase I Drill Program: Assays Pending
All outstanding drill core from hole AG_GC_001, AG_GC_002 (450m-600m), AG_GC_003 and
AG_GC_004 from the recently completed Phase I drill program have been delivered to ALS
Hermosillo Limited:
Core samples have been securely transported and logged
Sample preparation and geochemical analysis are underway.
Assay results are expected in the coming weeks.
The Phase I program was designed to expand and better define mineralization within
the Cerro Grande Skarn system, while testing the vertical and lateral continuity of
previously identified outcropping high-grade copper-gold-silver mineralization within a
300m strike zone. Results from the first 450 metres of drill hole AG_GC_002, previously
reported on February 51 (read news release here), confirmed the discovery of three
1 See Algo Grande news release of February 5, 2026, entitled “Algo Grande Discovers Three New Skarn
Horizons, Reports 36.00 Metres Above 1.0% Copper, Including 14.79 Metres of 1.4% Copper and Identifies
Evidence for Porphyry Potential at Depth”
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previously unknown high-grade skarn horizons, with mineralization extending from surface
to a depth of 390 metres and remaining open at depth.
In total, five high-grade skarn horizons now define the Cerro Grande mineralized system.
Intercepts from hole AG_GC_002 across these horizons returned more than 70 metres of
cumulative mineralization, including 36 metres grading above 1% Cu.
January 2026 Surface Prospecting Program: New Mineral Occurrences Identified
In parallel with drilling, the Company completed a successful property-wide prospecting
and geological mapping campaign in January.
Key Highlights from Surface Program:
19 rock samples with above 1% Cu, and an outstanding sample with 41.4% Cu
Identification of new mineral occurrences across the broader Adelita property
Discovery of an additional skarn occurrence located approximately 3 kilometers
South from the Cerro Grande discovery, at the Potrero South target, with an
outcropping extent of 300 metres at surface
Confirmation of mineralization on the northwest side of Cerro Grande, indicating that
mineralization occurs on both limbs of the folded limestone unit hosting the Cerro
Grande Skarn system
First reconnaissance campaign completed at the Las Tablas target, confirming
mineralization and prospective geology in a previously underexplored area
Identification of tourmaline-breccias in the Mezquital Porphyry target area
Advancement of geological knowledge of the Las Trancas target including an
outstanding sample with 41.4 % Cu, 1.97 g/t Au 1,570 g/t Ag
Identification of new priority target - La Molina, produced by Machine Learning
algorithms, in an area with lack of geochemical and geophysical information
A total of 49 samples were submitted to ALS Geochemistry Hermosillo Laboratory for
analysis (see Appendix A for all samples collected during the January 2026 prospecting
campaign). ALS is independent of the Company.
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These prospecting results (figure 1) confirm that the Adelita Project hosts a district-scale
multi-deposit system, with multiple mineralized centers beyond the currently drilled Cerro
Grande Central Skarn discovery.
Figure 1 – Highlight Results for the field campaign completed in January 2026
Potrero South Skarn Target
The identification of a second skarn occurrence approximately 3 kilometers south from
Cerro Grande area with a surface expression exceeding 300 metres, reinforces
management’s view that Adelita represents a multi-center, district-scale copper-dominant
skarn system with meaningful gold and silver by-product credits. This target has never been
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drilled and will be incorporated into the Company’s Phase II drill program planned for Q2,
2026.
In the target, 14 rock samples successfully identified copper mineralization with 3 samples
above 1% Cu, 4 samples above 1g/t Au and a maximum value of 3.06% Cu, 3.72 g/t Au and
232 g/t Ag.
Las Trancas Epithermal Target
A site visit to the Las Trancas target confirmed copper and silver mineralization at surface,
accompanied by hematitic and sericitic alteration, similar to that observed at the
neighboring Pan American Silver owned Alamo Dorado mine. These observations have
improved the Company’s understanding of the hydrothermal system and confirmed the
presence of structurally controlled mineralization.
Historical trenching at the target returned 9.5m @ 16.4 g/ Au and 1.9% Cu. Historically, this
target has not been drilled with diamond drilling; only step-out drilling has been conducted,
without prior structural interpretation of the mineralized system.
Four rock samples confirmed the presence of copper mineralization, including one outcrop
sample, two float samples from historical trenching, and one float sample from a stock of
old mining work. Notably, three of the four samples returned grades above 1% Cu, with peak
assays of 41.40% Cu, 13.45 g/t Au, and 1570 g/t Ag; this represents a selective rock sample
from an old stockpile.
The Las Trancas target will be prioritized in upcoming exploration campaigns,
including detailed geological mapping, systematic sampling, and a first-pass drill program
near the historical adit, which will be incorporated into the Company’s Phase II drill program
planned for Q2 2026.
Cerro Grande Northwest Target
Additional mineralization was confirmed on the northwest side of the Cerro Grande, near
historical drill hole AD-23-0034. The confirmation of mineralization on both limbs of the
anticline supports the interpretation that the host limestone unit may be mineralized in
multiple zones, with only the Cerro Grande zone being systematically tested by drilling.
In the target, 8 rock samples from outcrops successfully identified copper mineralization
with maximum assay values of 0.98% Cu, g/t 0.85 Au and g/t 31.40 Ag. These findings can
add 1.5 kms of strike to the Cerro Grande discovery zone.
La Molina Target
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La Molina target, is a new emerging target, defined during the prospecting campaign of
January 2026. Multiple high-grade rock sample and copper showing have been identified in
this new target, not previously recognized historically. The target La Molina was one target
recently identified in the Machine Learning exercise performed by GSM Geoscience, see
news release 9 January 2026, where machine learning algorithms successfully identified
prospective areas, where detailed geochemical and geophysical data is absent. Algo Grande
considers this a major step forward in the use of AI technology to improve targeting and fast
forward exploration.
In the target, 5 rock samples successfully identified copper mineralization with 2 samples
above 1% Cu and a maximum assay value of 1.99 % Cu,17.90 g/t Au and 44 g/t Ag.
Mezquital Porphyry Target
In the Mezquital porphyry target, a short reconnaissance visit was able to identify multiple
copper mineralization float samples and tourmaline breccia float samples.
Tourmaline breccias are commonly associated with boron-rich magmatic–hydrothermal
fluids and may represent hydrothermal breccia conduits related to intrusive systems. In
porphyry environments, quartz–tourmaline breccias can develop during late-magmatic fluid
release and are frequently observed along structural zones or at the margins of porphyry
intrusions, where they act as pathways for hydrothermal fluids.
Although the samples identified at Mezquital are float and therefore their source has not yet
been located, the presence of tourmaline breccia fragments together with copper-bearing
float samples is considered encouraging. This association may indicate proximity to a
magmatic-hydrothermal center capable of generating copper–gold mineralization,
consistent with exploration models for porphyry and related hydrothermal systems. Follow-
up work will focus on locating the bedrock source of both the copper mineralization and the
tourmaline breccias through systematic mapping, sampling and structural interpretation.
In the target, 3 rock float samples successfully identified copper mineralization with 1
sample above 1% Cu and a maximum assay value of 1.58 % Cu, 2.02 g/t Au and 82.10 g/t
Ag.
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Figure 2 - Key showings across the Adelita property from the successful field campaign of
January 2026
All drill core and rock samples referenced in this news release were collected under the
supervision of the Company’s geological team following industry-standard protocols. Drill
core was logged, sawed in half, with one half retained for reference and the other
submitted for analysis. Surface samples were grab samples of outcropping mineralization.
Grab samples are selective in nature and may not be representative of the overall
mineralization on the property.
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Samples were securely transported to ALS Limited in Hermosillo, Sonora, Mexico, an
independent ISO/IEC 17025 accredited laboratory. Samples were prepared by crushing and
pulverizing prior to analysis.
Gold is analyzed by fire assay with an atomic absorption finish. Copper, silver, and multi-
element analyses are determined using ICP methods following a four-acid digestion.
Overlimit samples are reanalyzed using ore-grade methods where applicable.
The Company maintains a QA/QC program that includes the insertion of certified reference
materials, blanks, and duplicates at regular intervals. QA/QC results are reviewed by the
Qualified Person prior to disclosure.
Trench results referenced in this release were generated by a previous operator. The
Company has obtained and reviewed the original certified analytical results from the
independent laboratory. While the Company did not conduct the trenching program, the
Qualified Person considers the analytical results to be reliable for exploration purposes.
ICP Engagement
The Company also announces the engagement of ICP Securities Inc. (“ICP”) to provide
automated market making services, including use of its proprietary algorithm, ICP
Premium™, in compliance with the policies and guidelines of the TSX Venture Exchange and
other applicable legislation. The Company will pay ICP a monthly fee of C$7,500, plus
applicable taxes, from its working capital. The agreement between the Company and ICP
was signed with an eƯective start date of March 2, 2026 (the “EƯective Date”) and is for
four (4) months and shall be automatically renewed for subsequent one (1) month terms
(each month called an “Additional Term”) unless either party provides at least thirty (30)
days written notice prior. There are no performance factors contained in the agreement and
no stock options or other compensation in connection with the engagement. ICP and its
clients may acquire an interest in the securities of the Company in the future.
ICP is an arm’s length party to the Company. ICP’s market making activity will be primarily
to correct temporary imbalances in the supply and demand of the Company’s shares. ICP
will be responsible for the costs it incurs in buying and selling the Company’s shares, and
no third party will be providing funds or securities for the market making activities.
About ICP Securities Inc.
ICP Securities Inc. is a Toronto based CIRO dealer-member that specializes in automated
market making and liquidity provision, as well as having a proprietary market making
algorithm, ICP Premium™, that enhances liquidity and quote health. Established in 2023,
with a focus on market structure, execution, and trading, ICP has leveraged its own
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proprietary technology to deliver high quality liquidity provision and execution services to a
broad array of public issuers and institutional investors.
Qualified Person and Data Verification
The technical information disclosed in this news release has been reviewed and approved
by João Rocha, EurGeol, Vice President of Exploration of Algo Grande Copper Corp., a
Qualified Person as defined by National Instrument 43-101. The Qualified Person has
verified the data disclosed herein, including drilling, sampling, analytical, and test data,
through review of original assay certificates, drill logs, and quality assurance and quality
control data.
About Algo Grande Copper Corp.
Algo Grande Copper Corp. is a growth-focused mineral exploration company advancing the
Adelita Project, a district-scale, multi-system copper-gold-silver opportunity positioned in
the prolific Arizona-Sonora copper belt.
The company is dedicated to unlocking the full mineral potential of this under-explored
corridor through disciplined data-driven exploration, technical excellence, and a firm
commitment to value creation for shareholders. The 5,895-hectare Adelita Project is
anchored by the high-grade Cerro Grande Cu-Au-Ag skarn discovery, which exhibits strong
continuity along a defined corridor extending over 6 kilometers. Reprocessing of legacy
geophysical data and field mapping indicate the presence of a potential porphyry system at
depth, suggesting a classic skarn-porphyry mineralization model similar to major deposits
found throughout northwestern Mexico.
ON BEHALF OF ALGO GRANDE COPPER CORP .
Enrico Gay
Chief Executive OƯicer
For more information, please contact:
E-mail: [email protected]
Website: www.algo-grande.com
Cautionary Statement on Forward-Looking Information
NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS
THAT TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS
RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS RELEASE.