# Heliostar Provides Progress Update on Ana Paula Feasibility Study

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/heliostar-provides-progress-update-on-ana-paula-feasibility-study--33b19187-9fc7-4e92-9516-859287a9a18b

Original source: https://www.newsfilecorp.com/release/315051/Heliostar-Provides-Progress-Update-on-Ana-Paula-Feasibility-Study

Publisher: newsfile

Original announcement: 2026-09-21T10:30:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: 2026-09-21T10:50:24.695Z

Atlas analysis updated: 2026-09-21T10:50:24.695Z

- Company: Heliostar Metals Ltd.

- Ticker: HSTR

- Exchange: Unavailable

- Region: Guerrero, Mexico

- Primary commodity: Gold

- Secondary commodities: Silver

- Document categories: Metallurgy, Permitting, Other

- Extracted: 2026-09-21 10:50:25 UTC

Narrative sentiment: 0.60 · Bullish

## Minestarters Atlas summary

Heliostar Metals is advancing its Ana Paula Feasibility Study, which is currently 34% complete and on track for a Q2 2027 finish. The company has finalized its process flowsheet, completed much of the metallurgical testing, and is preparing a new environmental permit \(MIA-R\) to support a transition to an underground-only mining operation.

Reasoning: The announcement provides a comprehensive progress update on a major Feasibility Study, noting significant milestones in engineering, metallurgy, and permitting, though it highlights the shift in mining method.

- Positive factor: Feasibility Study on track for Q2 2027

- Positive factor: Metallurgical test work substantially completed

- Positive factor: Process flowsheet finalized

- Positive factor: Permitting timelines progressing

- Positive factor: Trade-off studies suggest potential for higher throughput and lower costs

- Negative factor: Transition from open pit to underground mining plan requires new permit submission

Facts used in scoring: 2

## Classification and evidence

**Mill Route**

Polarity: neutral

Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\).

Why it applies: The company mentions a flotation circuit followed by bio-oxidation and CIL recovery.

Evidence · text

> amenable to recovery using conventional grinding and flotation followed by bio-oxidation and carbon-in-leach \("CIL"\) recovery

**POX/BIOX Route**

Polarity: neutral

Definition: Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX.

Why it applies: The process design includes a bio-oxidation \(BiOx\) circuit for the flotation concentrate.

Evidence · text

> proposed bio-oxidation \("BiOx"\) circuit

## Extracted facts

Stored fact records: 1. Some facts used in scoring do not have a stored record.

## Metallurgical Results (1)

### Fact 1

[Link to this fact](https://atlas-staging.minestarters.com/news/heliostar-provides-progress-update-on-ana-paula-feasibility-study--33b19187-9fc7-4e92-9516-859287a9a18b#fact-metallurgical-facts-0)

#### Identity

- Region: mexico
- Reported Region: Guerrero, Mexico
- Ticker: HSTR

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-21T00:00:00.000Z

Reasoning: Completion of a major circuit workstream reduces technical risk.

- Positive factor: Flotation circuit work finalized

Evidence · text

> All metallurgical work for the flotation circuit has been finalized.

## 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.