# Star Royalties Highlights Positive Copperstone Construction Decision and PFS Results by Minera Alamos

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/star-royalties-highlights-positive-copperstone-construction-decision-and-pfs-res--1b809725-e058-41cc-af88-b52e1a700c1b

Original source: https://money.tmx.com/en/quote/STRR/news/7343661387935545/star-royalties-highlights-positive-copperstone-construction-decision-and-pfs-res

Publisher: tmx

Original announcement: 2026-05-29T11:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Star Royalties Ltd.

- Ticker: STRR

- Exchange: TSX

- Region: Arizona

- Primary commodity: Gold

- Secondary commodities: None reported

- Document categories: Resource update, Production

- Extracted: 2026-08-26 10:51:03 UTC

Narrative sentiment: 0.90 · Bullish

## Minestarters Atlas summary

Star Royalties highlights the positive Pre-Feasibility Study \(PFS\) results and construction decision for the Copperstone Gold Project, held via a 4% gold stream. The PFS reports a significant increase in the resource base and declares maiden reserves with exceptional economics, including a 108% IRR.

Reasoning: The announcement highlights a major value uplift for Star Royalties' 4% gold stream due to a robust PFS from Minera Alamos, featuring significant resource growth and high-return economics.

- Positive factor: Significant increase in contained gold ounces \(110%\)

- Positive factor: High IRR \(108%\) and rapid payback \(1.2 years\)

- Positive factor: Maiden reserves declared

- Positive factor: Construction decision approved

Facts used in scoring: 2

## Classification and evidence

**Contained Metal Growth**

Polarity: positive

Definition: True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes.

Why it applies: Contained gold ounces in M&I increased by 110% compared to the previous estimate.

Evidence · text

> represent a 110% increase in contained gold ounces compared to the previous mineral resource estimate

**Maiden Resource**

Polarity: neutral

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

Why it applies: The announcement declares maiden Proven & Probable reserves.

Evidence · text

> maiden Proven & Probable Reserves of 1,934 kt grading 4.87 g/t and containing 303 koz gold have been declared

**QP/CP Signed**

Polarity: positive

Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience.

Why it applies: Mr. Darren Koningen, P. Eng., is named as the Qualified Person responsible for the technical content.

Evidence · text

> on Mr. Darren Koningen, P. Eng., Minera Alamos’ CEO, as the Qualified Person

## Extracted facts

Stored fact records: 2. Some facts used in scoring do not have a stored record.

## Resource Estimates (2)

### indicated

[Link to this fact](https://atlas-staging.minestarters.com/news/star-royalties-highlights-positive-copperstone-construction-decision-and-pfs-res--1b809725-e058-41cc-af88-b52e1a700c1b#fact-resource-facts-0)

gold

#### Identity

- Commodity: gold
- Ticker: STRR

#### Resource Data

- Category: indicated
- Tonnes: 4054000
- Grade: 4.83
- Grade Unit: g/t
- Contained Metal: 630000
- Contained Unit: koz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-29T00:00:00.000Z

Reasoning: Large M&I resource with significant growth in contained metal.

- Positive factor: 110% increase in contained gold ounces

Evidence · text

> Measured & Indicated Resources of 4,054 kt grading 4.83 grams per tonne gold \(“ g/t ”\) and containing 630 koz gold represent a 110% increase

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/star-royalties-highlights-positive-copperstone-construction-decision-and-pfs-res--1b809725-e058-41cc-af88-b52e1a700c1b#fact-resource-facts-1)

gold

#### Identity

- Commodity: gold
- Ticker: STRR

#### Resource Data

- Category: probable
- Tonnes: 1934000
- Grade: 4.87
- Grade Unit: g/t
- Contained Metal: 303000
- Contained Unit: koz

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-29T00:00:00.000Z

Reasoning: First declaration of reserves for the project.

- Positive factor: Maiden reserves declared

Evidence · text

> maiden Proven & Probable Reserves of 1,934 kt grading 4.87 g/t and containing 303 koz gold have been declared

## 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.