El Tropezón is centred on one of the largest airborne radiometric anomalies identified by CNEA in Chubut Province, hosting both sandstone-hosted and calcrete-hosted uranium mineralisation with a potential combined mineralised thickness of approximately 5–20 m immediatelow below surface.

Project Snapshot

Location

Chubut Province, Argentina

Proximity

~260 km west of Trelew; ~35 km south of National Route 25

Access

Via Via Provincial Route 53; nearest settlement Las Plumas (~70 km)

Ownership

100% owned by Powerhaus

Tenure

3 Manifestación de Descubrimiento (Statements of Discovery) applications

Area

~30 km² of near-surface uranium prospectivity; principal radiometric anomaly ~20 km²

Target Depth

Approximately 5–20 m for sandstone-hosted Uranium targets; 30–60 cm for calcrete-hosted uranium horizons.

Primary Target Styles

Near-surface sandstone-hosted uranium and overlying calcrete-hosted uranium

Location and Access

El Tropezón is located approximately 260 km west of Trelew in Chubut Province, accessible year-round via well-maintained regional roads approximately 35 km south of National Route 25.

The nearest settlement is the village of Las Plumas, approximately 70 km from the project area. The project area is uninhabited, with no permanent dwellings or farming activity

Why El Tropezon Matters

Major Radiometric Anomaly

Principal anomaly covers ~20 km², with a broader lower-level anomaly over ~40 km² — one of the largest identified by CNEA in Chubut.

Near-Surface Targets

Sandstone-hosted and calcrete-hosted uranium targets. Potential target thicknesses are approximately 5–20 m for sandstone-hosted targets and 30–60 cm for calcrete-hosted horizons within a target area of more than 30 km², making them amenable to low-cost drilling.

High-Grade Intercepts

Historical channel sampling returned up to 1,370 ppm U₃O₈ over 0.55 m, while rock chips samples returned values up to 3,183 ppm U₃O₈.

Never Drill-Tested

Despite strong radiometric anomalies and high-grade surface sampling results, the Project has never been drill tested, providing a significant first-mover opportunity.

Project History

The El Tropezón Project lies on a prominent 1970s airborne radiometric anomaly extending over 20 sq km, with a weaker response over 40 sq km, making it one of the largest in Chubut.

The El Tropezón Project has the potential to host stacked calcrete-hosted and sandstone-hosted uranium mineralisation within a broad 30 km² target area, with potential target thicknesses of 5–20 m for sandstone-hosted targets and 30–60 cm for calcrete-hosted horizons. The project lies on a gently sloping plateau, with sub-horizontal layers of the Puesto Manuel Arce (Cretaceous) and Salamanca (Tertiary) Formations exposed along the northern escarpment.

Two distinct uranium-bearing horizons have been identified:

Sandstone Hosted Uranium Horizon
Located within basal conglomerates and sandstones of the Salamanca Formation immediately above the Puesto Manuel Arce Formation, this horizon comprises 3–5 m of anomalous sediments. Rock-chip samples returned values up to 3,183 ppm U₃O₈, with vanadium values up to 1,000 ppm, while channel sampling returned 0.55 m at 1,370 ppm U₃O₈.

Near-Surface Calcrete Horizon
Identified in shallow calcareous material, this horizon is interpreted to reflect recent uranium remobilisation. Geochemical results returned values up to 839 ppm U₃O₈ within a more enriched 15–30 cm interval, with a potential calcrete-hosted target thickness of approximately 30–60 cm. The full vertical extent of mineralisation remains unknown because most historical hand-dug pits were shallow. One pit reached 1.30 m and intersected black Salamanca sandstone with elevated radioactivity beneath the calcrete horizon.

This suggests that the principal target is sandstone-hosted uranium mineralisation within the Salamanca Formation, locally overlain by a thin calcrete horizon interpreted to be related to recent remobilisation.

The Company notes that the near-surface nature of the targets at El Tropezón may present a development risk given Chubut’s prohibition on open-pit metal mining and cyanide use in mining production.

El Tropezón Rock Chip Sampling

Previous Exploration

Limited exploration by then TSX-listed Portal Resources was completed in 2007–2008 and included rock-chip, surface and channel sampling. Despite rock-chip results up to 3,183 ppm U₃O₈, the near-surface nature of the uranium mineralisation and the scale of the radiometric anomaly, the El Tropezón Project has never been drill tested.

Previous exploration returned the following results (see image below):

57 surface rock samples, with values up to 3,183 ppm U₃O₈ and an average of 387 ppm U₃O₈.
Channel Sampling, along 23 traverses, on inclined Salamanca Formation outcrops (up to 30cm deep) covering approximately ~2 km of outcrop:
- Best interval: 0.55 m @ 1,370 ppm U₃O₈
- 114 continuous samples with an average grade of 85 ppm U₃O₈
Hand trenched surface sampling (up to 30 cm deep) within the calcrete horizon. Confirmed calcrete-hosted uranium mineralization, with values up to 839 ppm U3O8.
- 9 samples with an average grade of 219 ppm U3O8.
- Vanadium values exceeding 10,000 ppm.
Radiometric survey: 1,659 readings collected over 20 km².

These results indicate widespread uranium mineralization at surface.

Exploration Focus

Historical exploration has confirmed both sandstone-hosted and calcrete-hosted uranium mineralisation. Exploration will focus on assessing the geometry, continuity and exploration potential of both mineralisation styles.

Stakeholder Engagement

Engage with local stakeholders to facilitate the exploration programme.

Verification & Sampling

Verify historical results and complement target definition through geological mapping and surface sampling.

Environmental Baseline

Complete baseline environmental studies and exploration documentation to support permitting.

Drilling Program

20 sonic drill holes to 15–25 m depth targeting both sandstone-hosted and calcrete-hosted mineralisation, subject to receipt of the required approvals.

Given the near-surface nature of the El Tropezón targets, the Company recognises that Chubut’s prohibition on open-pit metal mining and cyanide use in mining production may constrain potential development options.

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