Heliostar Commences Open Pit Mining at La Colorada Mine
Original announcement by tmx on
- Company
- Heliostar Metals Ltd.
- Ticker
- HSTR
- Exchange
- TSX
- Region
- Sonora
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Resource update, Production
- Extracted
- 2026-09-12 06:28:36 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Heliostar Metals has commenced open pit mining at the Veta Madre pit within its La Colorada property in Sonora, Mexico. The company is transitioning from stockpile leaching to stacking higher-grade ore and has designed an expanded 'Veta Madre Plus' pit to target an additional 20,000 ounces of gold.
Reasoning: The announcement marks a transition to higher-grade ore mining and pit expansion, providing a steady production base to fund other projects.
Positive factors
- Commencement of open pit mining at Veta Madre pit
- Expansion of pit design (Veta Madre Plus) targeting additional 20,000 oz gold
- On track to meet 2026 production guidance
- Becoming a signatory to the International Cyanide Management Code
Facts used in scoring: 2
Classification and evidence
QP/CP Signedpositive
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: Gregg Bush and Mike Gingles are named as Qualified Persons who approved the disclosure.
Evidence · text
“Qualified Persons Gregg Bush, P.Eng. and Mike Gingles, MBA... have reviewed the scientific and technical information... and have approved the disclosure herein.”
Extracted facts
Stored fact records: 2. Some facts used in scoring do not have a stored record.
Resource Estimates (2)
probableLa Colorada · goldTonnes: 17100000Grade: 0.68Grade Unit: g/tContained Metal: 376000Contained Unit: ozView all detailsHide details
Identity
- Project
- La Colorada
- Commodity
- gold
- Region
- sonora
- Reported Region
- Sonora
- Ticker
- HSTR
Resource scope
- Estimate type
- reserve
- Reporting standards
- ni_43_101
- Resource group id
- resource:eed3abc28ca495504cfc
- Mining method
- open_pit
- Ownership percent
- 100 %
Resource Data
- Category
- probable
- Tonnes
- 17100000
- Grade
- 0.68
- Grade Unit
- g/t
- Contained Metal
- 376000
- Contained Unit
- oz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-27T00:00:00.000Z
Reasoning: Baseline reserve statement for the La Colorada mine.
Evidence · text
“reserves of 376,000 ounces of gold grading 0.68 grams per tonne ("g/t") in 17.1 million tonnes ("Mt") of ore”
Tags used in scoring
Probable Reservepositive
Indicated Resource with demonstrated economic viability after applying modifying factors.
Why it applies: category is "probable"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
probableLa Colorada · goldTonnes: 2100000Grade: 0.71Grade Unit: g/tContained Metal: 48000Contained Unit: ozView all detailsHide details
Identity
- Project
- La Colorada
- Commodity
- gold
- Region
- sonora
- Reported Region
- Sonora
- Ticker
- HSTR
Resource scope
- Estimate type
- reserve
- Reporting standards
- ni_43_101
- Resource group id
- resource:b6aee987758a1b827052
- Mining method
- open_pit
- Ownership percent
- 100 %
Resource Data
- Category
- probable
- Tonnes
- 2100000
- Grade
- 0.71
- Grade Unit
- g/t
- Contained Metal
- 48000
- Contained Unit
- oz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-27T00:00:00.000Z
Reasoning: Specific reserve breakdown for the Veta Madre pit.
Evidence · text
“Veta Madre pit hosts 48,000 ounces of gold grading 0.71 g/t in 2.1 Mt of ore”
Tags used in scoring
Probable Reservepositive
Indicated Resource with demonstrated economic viability after applying modifying factors.
Why it applies: category is "probable"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
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.