SONORO FILES UPDATED PRELIMINARY ECONOMIC ASSESSMENT FOR THE CERRO CALICHE PROJECT
Original announcement by orestocks on
- Company
- Sonoro Gold Corp.
- Ticker
- SGO
- Exchange
- TSXV
- Region
- Sonora, Mexico
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Metallurgy, Resource update
- Extracted
- 2026-10-01 04:18:23 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Sonoro Gold Corp. has filed an updated Preliminary Economic Assessment (PEA) for the Cerro Caliche Gold Project in Sonora, Mexico. The PEA indicates a potential 10-year open pit, heap leach operation with a pre-tax NPV8 of $360 million and an IRR of 65%.
Reasoning: The updated PEA presents strong economic metrics (NPV, IRR, Payback) for the Cerro Caliche project, though it remains at a preliminary stage with significant inferred resources.
Positive factors
- Strong economic indicators with $360M Pre-Tax NPV8
- High IRR of 65% Pre-Tax
- Short payback period of 1.7 years
- PEA-supporting technical report filed
Negative factors
- PEA is preliminary in nature
- Includes Inferred resources which are speculative
- Gold recovery of 72% is relatively low for a mill route (though heap leach is stated)
Facts used in scoring: 2
Classification and evidence
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: The document reports the filing of an updated Preliminary Economic Assessment (PEA).
Evidence · text
“SONORO FILES UPDATED PRELIMINARY ECONOMIC ASSESSMENT”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The PEA was prepared in accordance with NI 43-101 requirements.
Evidence · text
“prepared in accordance with the requirements of National Instrument 43-101”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: the document describes a heap_leach route ("heap leach")
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 2. Some facts used in scoring do not have a stored record.
Metallurgical Results (2)
Fact 1Cerro Caliche Gold Project · goldRecovery: 72 %View all detailsHide details
Identity
- Project
- Cerro Caliche Gold Project
- Commodity
- gold
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- SGO
Test Work
- Program Status
- preliminary
- Sample
- LOM average production
Recovery
- Recovery
- 72 %
- Recovery Basis
- unspecified
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-15T00:00:00.000Z
Reasoning: 72% gold recovery reported for the LOM heap leach operation.
Evidence · text
“Gold recovery of 72%”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 72% is below the weak band (80%)
Fact 2Cerro Caliche Gold Project · silverRecovery: 27 %View all detailsHide details
Identity
- Project
- Cerro Caliche Gold Project
- Commodity
- silver
- Region
- mexico
- Reported Region
- Sonora, Mexico
- Ticker
- SGO
Test Work
- Program Status
- preliminary
- Sample
- LOM average production
Recovery
- Recovery
- 27 %
- Recovery Basis
- unspecified
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-04-15T00:00:00.000Z
Reasoning: Silver recovery is reported at 27%.
Evidence · text
“silver recovery of 27%”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 27% is below the weak band (75%)
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.