Omai Gold Announces Preliminary Economic Assessment for Its Omai Project, Guyana
Original announcement by orestocks on
- Company
- Omai Gold Mines Corp.
- Ticker
- OMG.V
- Exchange
- Unavailable
- Region
- Guyana, South America
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Resource update, Production
- Extracted
- 2026-08-19 13:47:16 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Omai Gold announced a highly positive Preliminary Economic Assessment (PEA) for its Omai Project in Guyana, projecting 6.327 million ounces of payable gold production over an 18-year mine life. The PEA outlines a robust after-tax NPV of $4.0 billion and an IRR of 24% at a base case gold price of $3,600/oz, with average cash operating costs of $1,501/oz. This economic study is underpinned by an April 2026 Mineral Resource Estimate that saw an 88% increase in total resources, highlighting the project's significant potential.
Reasoning: Omai Gold's PEA for its Omai Project outlines strong financial metrics and a substantial gold production profile, building on a significantly expanded mineral resource. While the study is preliminary and involves high initial capital, the project's scale, favorable metallurgy, and existing infrastructure present a compelling development opportunity.
Positive factors
- The Preliminary Economic Assessment (PEA) demonstrates robust economics with a high after-tax NPV of $4.0 billion and an IRR of 24% at a base case gold price of $3,600/oz.
- The project projects significant life-of-mine payable gold production of 6.327 million ounces over 18 years.
- The PEA is based on an April 2026 Mineral Resource Estimate (MRE) that reported an impressive 88% increase in total resources.
- The project benefits from existing infrastructure, including highway access, a cleared site, and an airstrip, which can de-risk development.
- High average process recovery of 93% for gold, indicating clean, non-refractory mineralization amenable to standard CIL processing.
Negative factors
- The PEA is preliminary in nature and includes inferred mineral resources, which are considered speculative and have a lower level of confidence.
- The project requires a high initial capital expenditure of $1.427 billion, which could pose financing challenges.
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 6
Classification and evidence
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: The document is a Preliminary Economic Assessment (PEA) for the Omai Project, outlining its economic viability.
Evidence · text
“Omai Gold Announces Preliminary Economic Assessment for Its Omai Project, Guyana”
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The PEA is based on an April 2026 Mineral Resource Estimate, which was an update that reported an 88% increase in total MRE.
Evidence · text
“This PEA is based on the Mineral Resource Estimate ("MRE") announced April 14, 2026”
Tonnage Growthpositive
Significant tonnage increase (≥15%) vs prior estimate with grade maintained or improved.
Why it applies: The April 2026 MRE, which underpins this PEA, reported an impressive 88% increase to the total MRE.
Evidence · text
“reporting an impressive 88% increase to the total MRE”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The PEA explicitly states that it includes inferred mineral resources, which are considered speculative.
Evidence · text
“This PEA is preliminary in nature and includes inferred mineral resources”
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: The Mineral Resource Estimate was prepared by Mr. Alan J. San Martin, P.Eng. from SLR Consulting (Canada) Ltd., who is a Qualified Person.
Evidence · text
“Mr. Alan J. San Martin, P.Eng. from SLR Consulting (Canada) Ltd., is the Qualified Person (QP) for this Mineral Resource Estimate.”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The Mineral Resources were estimated in accordance with CIM Standards, which are compliant with NI 43-101.
Evidence · text
“The Mineral Resources were estimated in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (CIM), Standards on Mineral Resources and Reserves Definitions (2014) and Best Practices Guidelines (2019).”
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: The PEA projects an average gold process recovery of 93%, which is considered high for a CIL plant.
Evidence · text
“93% process recovery”
Free Millingpositive
Simple, clean ore amenable to standard processing without oxidation.
Why it applies: Metallurgical test work indicates clean, non-refractory gold mineralization, suggesting simple processing.
Evidence · text
“results from recent metallurgical test work which indicate clean, non-refractory gold mineralization, free of deleterious components.”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing facility is based on a standard metallurgical flowsheet, consisting of grinding, gravity separation, and carbon-in-leach (CIL).
Evidence · text
“conventional 25,000 tpd processing facility based on a standard metallurgical flowsheet, consisting of grinding, gravity separation, and carbon-in-leach ("CIL")”
Open Pit Mining
No canonical definition is currently available.
Why it applies: The PEA mine plan incorporates an open pit mine at the Wenot deposit using conventional truck-and-shovel methods.
Evidence · text
“combined open pit mine at the Wenot shear-hosted gold deposit”
Underground Mining
No canonical definition is currently available.
Why it applies: The PEA mine plan incorporates an underground mine at the adjacent Gilt deposit.
Evidence · text
“underground mine at the adjacent intrusion-hosted Gilt gold deposit”
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: Cut-off grades for both open pit and underground resources are clearly stated in the MRE notes.
Evidence · text
“Mineral Resources are reported at cut-off grades of 0.20 g/t Au for soft rock, 0.30 g/t Au for hard rock within the open pit, and 1.70 g/t Au for underground shapes.”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Resource Estimates (6)
indicatedOmai · goldTonnes: 38100000Grade: 2.04Grade Unit: g/tContained Metal: 2495000Contained Unit: ozView all detailsHide details
Identity
- Project
- Omai
- Commodity
- gold
- Region
- guyana
- Reported Region
- Guyana, South America
- Ticker
- OMG.V
Resource Data
- Category
- indicated
- Tonnes
- 38100000
- Grade
- 2.04
- Grade Unit
- g/t
- Contained Metal
- 2495000
- Contained Unit
- oz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-19T00:00:00.000Z
Reasoning: The overall indicated resource is substantial, contributing significantly to the project's economic viability as demonstrated in the PEA.
Positive factors
- Significant indicated gold resource for the overall project, providing a strong foundation for economic studies.
Negative factors
- Cut-off grades for the overall project are a combination of different values for open pit and underground, making a single representative value difficult to state.
Evidence · text
“2.495 Moz Au averaging 2.04 g/t Au (in 38.1 Mt) in the Indicated category”
inferredOmai · goldTonnes: 106600000Grade: 1.59Grade Unit: g/tContained Metal: 5465000Contained Unit: ozView all detailsHide details
Identity
- Project
- Omai
- Commodity
- gold
- Region
- guyana
- Reported Region
- Guyana, South America
- Ticker
- OMG.V
Resource Data
- Category
- inferred
- Tonnes
- 106600000
- Grade
- 1.59
- Grade Unit
- g/t
- Contained Metal
- 5465000
- Contained Unit
- oz
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-19T00:00:00.000Z
Reasoning: The large inferred resource provides substantial potential for future growth and expansion, though its preliminary nature warrants a lower confidence score.
Positive factors
- Large inferred gold resource for the overall project, indicating significant exploration upside and potential for future conversion.
Negative factors
- Inferred resources are considered speculative and have a lower level of confidence.
- Cut-off grades for the overall project are a combination of different values for open pit and underground, making a single representative value difficult to state.
Evidence · text
“5.465 Moz Au averaging 1.59 g/t Au (in 106.6 Mt) in the Inferred category”
indicatedOmai · goldTonnes: 28400000Grade: 1.59Grade Unit: g/tContained Metal: 1453000Contained Unit: ozView all detailsHide details
Identity
- Project
- Omai
- Commodity
- gold
- Region
- guyana
- Reported Region
- Guyana, South America
- Ticker
- OMG.V
Resource Data
- Category
- indicated
- Tonnes
- 28400000
- Grade
- 1.59
- Grade Unit
- g/t
- Contained Metal
- 1453000
- Contained Unit
- oz
- Cutoff Grade
- 0.3
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-19T00:00:00.000Z
Reasoning: The Wenot deposit's indicated resource is substantial and contributes significantly to the project's open pit component.
Positive factors
- Significant indicated gold resource for the Wenot open pit deposit, forming a key part of the mine plan.
Evidence · text
“Wenot deposit comprises 1.453 Moz averaging 1.59 g/t Au (28.4 Mt) in the Indicated category”
inferredOmai · goldTonnes: 92400000Grade: 1.35Grade Unit: g/tContained Metal: 4000000Contained Unit: ozView all detailsHide details
Identity
- Project
- Omai
- Commodity
- gold
- Region
- guyana
- Reported Region
- Guyana, South America
- Ticker
- OMG.V
Resource Data
- Category
- inferred
- Tonnes
- 92400000
- Grade
- 1.35
- Grade Unit
- g/t
- Contained Metal
- 4000000
- Contained Unit
- oz
- Cutoff Grade
- 0.3
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-19T00:00:00.000Z
Reasoning: The Wenot deposit's large inferred resource provides substantial upside for future conversion and expansion, though it carries a lower confidence level.
Positive factors
- Large inferred gold resource for the Wenot open pit deposit, offering significant expansion potential.
Negative factors
- Inferred resources are considered speculative and have a lower level of confidence.
Evidence · text
“4.00 Moz averaging 1.35 g/t Au (92.4 Mt) in the Inferred category”
indicatedOmai · goldTonnes: 9700000Grade: 3.33Grade Unit: g/tContained Metal: 1042000Contained Unit: ozView all detailsHide details
Identity
- Project
- Omai
- Commodity
- gold
- Region
- guyana
- Reported Region
- Guyana, South America
- Ticker
- OMG.V
Resource Data
- Category
- indicated
- Tonnes
- 9700000
- Grade
- 3.33
- Grade Unit
- g/t
- Contained Metal
- 1042000
- Contained Unit
- oz
- Cutoff Grade
- 1.7
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-19T00:00:00.000Z
Reasoning: The Gilt deposit features a high-grade indicated resource, which is a strong positive for the underground operation's economics.
Positive factors
- High-grade indicated gold resource for the Gilt underground deposit, crucial for the underground mining component.
Evidence · text
“Gilt deposit hosts an Indicated MRE of 1.04 Moz of gold averaging 3.33 g/t Au (9.7 Mt)”
inferredOmai · goldTonnes: 14200000Grade: 3.22Grade Unit: g/tContained Metal: 1465000Contained Unit: ozView all detailsHide details
Identity
- Project
- Omai
- Commodity
- gold
- Region
- guyana
- Reported Region
- Guyana, South America
- Ticker
- OMG.V
Resource Data
- Category
- inferred
- Tonnes
- 14200000
- Grade
- 3.22
- Grade Unit
- g/t
- Contained Metal
- 1465000
- Contained Unit
- oz
- Cutoff Grade
- 1.7
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-08-19T00:00:00.000Z
Reasoning: The Gilt deposit's high-grade inferred resource offers substantial upside for the underground operation, though it requires further drilling to upgrade confidence.
Positive factors
- High-grade inferred gold resource for the Gilt underground deposit, with significant growth potential.
Negative factors
- Inferred resources are considered speculative and have a lower level of confidence.
Evidence · text
“Inferred of 1.47 Moz of gold averaging 3.22 g/t Au (14.2 Mt)”
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.