# Aldebaran Files PEA on Sedar+ and Announces Termination of the Option Agreement with Nuton Holdings Ltd.

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/aldebaran-files-pea-on-sedar-and-announces-termination-of-the-option-agreement-w--795d7aa3-df9a-44c5-b8f1-4924ca8ada91

Original source: https://money.tmx.com/en/quote/ALDE/news/5543077420220930/aldebaran-files-pea-on-sedar-and-announces-termination-of-the-option-agreement-w

Publisher: tmx

Original announcement: 2025-11-24T12:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Aldebaran Resources Inc.

- Ticker: ALDE

- Exchange: TSX

- Region: San Juan Province, Argentina

- Primary commodity: Copper

- Secondary commodities: Gold, Silver

- Document categories: Resource update, Agreement transaction

- Extracted: 2026-08-21 04:14:09 UTC

Narrative sentiment: 0.10 · Bullish

## Minestarters Atlas summary

Aldebaran Resources has filed a Preliminary Economic Assessment \(PEA\) for the Altar copper-gold project in Argentina, reporting an NPV of US$2 billion and an IRR of 20.5%. Concurrently, the company announced the termination of its option agreement with Nuton Holdings Ltd \(a Rio Tinto venture\), though they may still pursue a technology licensing deal.

Reasoning: The announcement is a dual-edged sword: it delivers a highly material PEA with strong economic indicators for a major project, but simultaneously reports the loss of a strategic JV partner \(Nuton\) due to their shifting priorities.

- Positive factor: Strong PEA economics \(NPV US$2B, IRR 20.5%\)

- Positive factor: Large-scale porphyry copper-gold project

- Positive factor: Long-life project with attractive cash costs

- Negative factor: Termination of Nuton \(Rio Tinto venture\) option agreement

- Negative factor: Loss of potential 20% JV partner

Facts used in scoring: 3

## Classification and evidence

**PEA-Supporting**

Polarity: neutral

Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: The announcement is the filing of a Preliminary Economic Assessment \(PEA\) for the Altar project.

Evidence · text

> Aldebaran Files PEA on Sedar+

**Maiden Resource**

Polarity: neutral

Definition: First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component.

Why it applies: While the PEA is new, it is based on an updated technical report and resource estimate.

Evidence · text

> filed on SEDAR+ of an updated Technical Report and Preliminary Economic Assessment

## Extracted facts

Stored fact records: 3. Some facts used in scoring do not have a stored record.

## Resource Estimates (3)

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-files-pea-on-sedar-and-announces-termination-of-the-option-agreement-w--795d7aa3-df9a-44c5-b8f1-4924ca8ada91#fact-resource-facts-0)

copper

#### Identity

- Commodity: copper
- Ticker: ALDE

#### Resource Data

- Category: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-11-24T00:00:00.000Z

Reasoning: PEA establishes the economic viability of the copper component of the Altar project.

- Positive factor: Significant production potential

Evidence · text

> delivering significant copper, gold, and silver production

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-files-pea-on-sedar-and-announces-termination-of-the-option-agreement-w--795d7aa3-df9a-44c5-b8f1-4924ca8ada91#fact-resource-facts-1)

gold

#### Identity

- Commodity: gold
- Ticker: ALDE

#### Resource Data

- Category: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-11-24T00:00:00.000Z

Reasoning: PEA establishes the economic viability of the gold component of the Altar project.

- Positive factor: Significant production potential

Evidence · text

> delivering significant copper, gold, and silver production

### inferred

[Link to this fact](https://atlas-staging.minestarters.com/news/aldebaran-files-pea-on-sedar-and-announces-termination-of-the-option-agreement-w--795d7aa3-df9a-44c5-b8f1-4924ca8ada91#fact-resource-facts-2)

silver

#### Identity

- Commodity: silver
- Ticker: ALDE

#### Resource Data

- Category: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2025-11-24T00:00:00.000Z

Reasoning: PEA establishes the economic viability of the silver component of the Altar project.

- Positive factor: Significant production potential

Evidence · text

> delivering significant copper, gold, and silver production

## How Atlas produces this analysis

Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.