La Huayca Project · Andean Copper Exploration

Project at a glance — 01

A focused exploration company with twelve years of technical groundwork.

4,000ha

Exploration Concessions

with expansion to ~10,000 ha in progress.

~4,500m

Altitude · Chilean Puna

High-altitude Andean plateau, Antofagasta Region.

4.2 × 3.6km²

AMT Conductive Footprint

Conceptual envelope to ~1,050 m depth defined by AMT survey.

12yrs

Continuous Programme

2013–2026 · IP, AMT, drilling, and laboratory studies.

Project Company: Sociedad Contractual Minera La Huayca SpA · Chilean special-purpose mining company
Target Commodity: Copper — concealed, structurally controlled hydrothermal system
Stage: Exploration. No JORC- or NI 43-101-compliant resource defined.
On-site Infrastructure: Operational 12-person camp · water supply · satellite communications
Current Activity: Borehole S6 deep test (target 1,000–1,500 m) · paused at 112 m · resumes October 2026

Why this project — 02

Eight reasons La Huayca merits deep drill testing.

A coherent technical case built from independent, multi-method evidence — not a single dataset.

Large, deep geophysical target

The 2023–24 AMT survey defined a coherent ~1.97 billion m³ conductive envelope to 1,050 m depth across a 4.2 × 3.6 km² area — consistent with the scale of a concealed hydrothermal system.

Hypogene system confirmed by drilling

Drilling intersected a fresh pyrite → chalcopyrite paragenesis below 245 m. Sulfur values rise from ~4% to 8.6% with depth, supporting a hypogene (primary) hydrothermal system rather than surface weathering.

Trans-Andean structural corridor

Sits on the Huaytiquina anticline (>8 km strike), interpreted as the local expression of the >100 km Olacapato–El Toro fault system — a textbook fluid-conduit setting.

Multi-method convergence

Two independent geophysical methods (IP 2014, AMT 2023–24) anchor the same anomalous zone. The probability that the signal is a single-cause artefact is materially reduced.

Tier-1 mining jurisdiction

Chile's Antofagasta Region — globally recognised investor framework, court-granted concession title, established regional infrastructure, on-site camp already operational.

A clearly defined catalyst

Borehole S6 (target 1,000–1,500 m) is the first physical test of the AMT core. The outcome is binary: a result that confirms and re-rates the project, or one that constrains and reframes it.

A reactive geological fluid trap

The Paleocene–Eocene Siglia Formation limestone — intersected in every completed hole — provides both a chemical (carbonate reactivity) and physical (permeability contrast, brecciation) trap for ascending hydrothermal fluids.

Drilling problem solved

The clay-altered horizon that terminated three earlier holes was successfully cleared by both S5 and S6 in 2026. The upper-cap drilling challenge — a key historical risk — is now demonstrably tractable.

The geological target — 03

A conductive volume visible from surface to depth.

Audio-magnetotelluric imaging across nine profiles (17,860 m, 2023–24) reconstructed a three-dimensional conductive envelope beneath the project area. The depth slices below show the system widening and intensifying with depth — the signature of a concealed hydrothermal body.

AMT Depth Slice

200m

Conductive volume mapped from nine 2-D AMT profiles. Yellow zones mark the most intense conductors — the principal copper exploration targets.

Plan view ~4.2 × 3.6 km Grid 200 x 200 m Yellow area 0-100 Ω·m - Green area 100-250 Ω·m - Blue area 250-500 Ω·m AMT depth slice at 200m

Depth below surface (metres)

~1.97billion m³

Total envelope

Conductive volume reconstructed from nine AMT profiles, extending from ~200 m to over 1,050 m depth.

>600m depth

Principal target

The most intense conductive cores sit beyond the reach of any drill hole completed to date.

26–40ppm Cu (S3)

Sub-economic shallow

Trace copper consistent with peripheral sampling above an economic core — neither confirms nor excludes one.

0deep holes to date

Test not yet performed

Twelve years of preparation. The defining drill test of the deep target begins with Borehole S6.

Twelve years of work — 04

A staged, technically disciplined programme.

Each phase has progressively improved understanding of the concealed system — and increased confidence in the principal target.

2013

Geophysical screening

Regional gravimetric analysis

NW–SE structural corridor analysis identifies La Huayca as a priority target area within the Olacapato–El Toro lineament framework.

2014

Geophysical survey

Induced Polarization & Resistivity

Six profiles totalling 28,400 m surveyed by DPI Ingenieros Ltda. Four chargeability anomalies defined within a 3 × 4 km² area. Reported 2016.

2017–
2018

Drilling · S1 & S2

First diamond drilling campaign

Two HQ holes (~130 m TD each) confirm stratigraphy: ignimbrite cover, clay-altered tuff, calcareous breccia. Trace sulfides identified toward base of holes.

2021

Drilling · S3 + Laboratory

Hypogene sulfide system confirmed

Borehole S3 (304 m TD) + chalcographic, mineralogical, and ICP-AES studies confirm pyrite → chalcopyrite paragenesis. Sub-economic Cu (26–40 ppm) at peripheral position.

2022–
2023

Geological synthesis

Petrographic study & structural model

Advanced argillic alteration documented in surface outcrop (alunite, jarosite, gypsum, trace pyrophyllite). Two independent geological reports published.

2023–
2024

Geophysical survey

Audio-Magnetotelluric (AMT) Survey

Nine profiles, 17,860 m, imaging to ~3,000 m depth. Defines a coherent 3-D conductive envelope of ~1.97 Bm³ to 1,050 m — the principal exploration target.

2025

Drilling · S4

First deep-test attempt

First attempt to penetrate below the argillic cap toward the AMT principal target. Halted at ~100 m in clay-altered ground.

2026

Drilling · S5 & S6 — Active

Deep drilling — argillic cap cleared

Boreholes S5 (118 m, halted by contractor handling error) and S6 (112 m, suspended for winter) successfully cleared the clay-altered horizon. S6 resumes October 2026 toward 1,000–1,500 m target depth.

Forward programme — 05

A phased plan with a formal decision gate.

Phase 1 is funded by the Project Company. Phase 2 is contingent on a positive Phase 1 result.

Phase 1A

Deep drilling

Q4 2026 — Q2 2027

S6 deep drilling resumes October 2026
Detailed geological logging
Systematic core sampling
Petrographic & mineralogical follow-up

Phase 1B

Integration & gate

Q1 — Q2 2027

Results integration & model update
Updated technical report
Phase 2 decision gate

Phase 2 · Contingent

Programme scale-up

From Q4 2027 — earliest

2–4 additional deep holes
Independent CP / QP report
Preliminary resource (if warranted)

Phase 2 · Partnership

Phases 1A and 1B are fully funded by La Huayca. For Phase 2, we are seeking a strategic partner.

Following a positive Phase 1 result, the Company intends to engage prospective partners to support the deep-drilling program and the path to an independent CP / QP resource assessment. Potential structures include earn-in, option, strategic joint venture, or acquisition — subject to mutual due diligence.

Open a confidential conversation →

Near-term catalysts

Oct 2026

S6 drilling resumes

Re-establishes the deep-target test pathway.

Q4 2026

First core from AMT zone

First direct observation of the deep conductive system.

Q1 2027

First assay results

Quantitative test of the exploration thesis.

Q2 2027

Phase 1 technical report

Updated model and Phase 2 decision basis.

Important disclosures — 06

An exploration-stage project. Read this carefully.

No mineral resource. No mineral resource estimate compliant with JORC 2012, NI 43-101, SAMREC or any other recognized reporting standard has been prepared for the La Huayca Project. None of the geophysical interpretations, geological models, drilling results, or laboratory studies summarized on this site has been signed off, reviewed, or independently verified by a Competent Person (CP) or Qualified Person (QP).

Conceptual targets only. All exploration targets described on this site are conceptual. The principal AMT-defined conductive zones have not been penetrated by any drill hole. Whether the deep conductors correspond to economic copper mineralization is the project's defining unresolved question.

Independent verification not yet performed. Engagement of an independent Competent Person or Qualified Person with relevant Andean copper exploration experience is contemplated as part of Phase 2 and is a stated prerequisite for any future preliminary mineral resource estimation.

Risk of total loss. Exploration-stage investments carry a high risk of total loss of invested capital. The probability of discovering economic mineralization at depth cannot be quantified from currently available data.

This site is provided for general information at the exploration stage. It is not a technical report, an offer to sell securities, or a solicitation of investment. Detailed technical information, including the integrated technical report and supporting annexes, is available subject to a non-disclosure agreement.

Contact & data room — 07

Detailed information available under NDA.

Investor & Partnership Enquiries

Carlos E. Longeri

CFO · Investor Relations · Founder

carlos.longeri@lahuayca.com

Lead point of contact for prospective partners and investors. Manages the NDA-gated data room and external communications. Coordinates commercial structuring of Phase 2 partnership conversations.

Project Company

Sociedad Contractual Minera La Huayca SpA

Jurisdiction

Republic of Chile

Available under NDA

Integrated technical report · supporting annexes · drill logs · geophysical datasets · concession schedule

A concealed copper system in the high Andes of northern Chile.