# SONORO ANNOUNCES UPDATED MINERAL RESOURCE ESTIMATE AND ROBUST UPDATED PEA FOR CERRO CALICHE GOLD PROJECT: AFTER-TAX NPV OF USD $224 MILLION AND AFTER-TAX IRR OF 50%

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/sonoro-announces-updated-mineral-resource-estimate-and-robust-updated-pea-for-ce--c42bb970-386a-4b46-9db5-73c28dde3068

Original source: https://finance.yahoo.com/news/sonoro-announces-updated-mineral-estimate-130000175.html

Publisher: yahoo\_press

Original announcement: 2026-02-28T13:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Sonoro Gold Corp.

- Ticker: SGO

- Exchange: TSXV

- Region: Sonora State, Mexico

- Primary commodity: Gold

- Secondary commodities: None reported

- Document categories: Resource update, Other

- Extracted: 2026-08-21 01:41:49 UTC

Narrative sentiment: 0.80 · Bullish

## Minestarters Atlas summary

Sonoro Gold Corp. has announced an updated Mineral Resource Estimate and a robust Preliminary Economic Assessment \(PEA\) for its Cerro Caliche gold project in Mexico. The updated PEA indicates a potential ten-year life of mine using open pit heap leach mining, with an after-tax NPV of USD $224 million and an IRR of 50%.

Reasoning: The announcement provides significant economic updates \(NPV and IRR\) alongside a mineral resource update for a gold project.

- Positive factor: Updated MRE and PEA

- Positive factor: Robust economic metrics \(NPV $224M, IRR 50%\)

- Positive factor: Clear mining method \(open pit, heap leach\)

Facts used in scoring: 0

## Classification and evidence

**Resource Update**

Polarity: neutral

Definition: Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: The document explicitly announces an updated Mineral Resource Estimate \(MRE\).

Evidence · text

> announce the results of an independent updated Mineral Resource Estimate \(“MRE”\)

**PEA-Supporting**

Polarity: neutral

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

Why it applies: The resource update is presented in the context of supporting an updated Preliminary Economic Assessment.

Evidence · text

> updated Preliminary Economic Assessment \(“PEA”\)

## Extracted facts

Stored fact records: 0. Some facts used in scoring do not have a stored record.

No stored fact records are available for this extraction.

## 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.