# Omai Gold Increases Indicated Mineral Resources to 2.5 Moz Au at 2.04 g/t Au \(38.1 Mt\) and Inferred to 5.5 Moz Au at 1.59 g/t Au \(106.6 Mt\) with Expansion of Wenot and Gilt Deposits Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38--ad492fba-1278-43a4-8a24-7c9637885590 Original source: https://money.tmx.com/en/quote/OMG/news/5937577607845879/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38- Publisher: tmx Original announcement: 2026-04-14T15:11:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Omai Gold Mines Corp. - Ticker: OMG - Exchange: TSX - Region: Guyana - Primary commodity: Gold - Secondary commodities: None reported - Document categories: Resource update - Extracted: 2026-09-18 15:01:06 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Omai Gold has updated its Mineral Resource Estimate for the Omai Gold Property in Guyana, reporting a combined Indicated resource of 2.5 Moz Au at 2.04 g/t Au and an Inferred resource of 5.5 Moz Au at 1.59 g/t Au. The update is driven by significant expansion at the Wenot and Gilt deposits, supported by a higher gold price assumption of $3,000/oz. Reasoning: The update delivers substantial resource growth, particularly in the Wenot Indicated category, driven by successful conversion of Inferred material and higher gold price assumptions, despite some grade dilution in Inferred zones. - Positive factor: Significant tonnage and ounce growth in Wenot Indicated category - Positive factor: Substantial Inferred expansion at Gilt Deposit - Positive factor: Increased gold price assumption used in modeling - Positive factor: Expansion of mineralization footprint at both deposits - Negative factor: Grade decline in Wenot Inferred category - Negative factor: Indicated tonnage decrease at Gilt Deposit Facts used in scoring: 6 ## Classification and evidence **Tonnage Growth** Polarity: positive Definition: Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved. Why it applies: Combined Indicated tonnage increased from 31.9 Mt to 38.1 Mt Evidence · text > a 17.6% increase, averaging 2.04 g/t Au in 38.1Mt **Contained Metal Growth** Polarity: positive Definition: True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes. Why it applies: Combined Indicated gold increased from 2.12 Moz to 2.50 Moz Evidence · text > 2,495,000 ounces of gold \(Indicated MRE\), a 17.6% increase **Category Upgrade** Polarity: positive Definition: Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal. Why it applies: Wenot Indicated ounces increased by 483,000 oz due to conversion of Inferred material Evidence · text > The recent drilling successfully added 483,000 ounces to bring Wenot's Indicated MRE to 1.45 million ounces, representing a 49% increase. **Grade Decline** Polarity: negative Definition: Average grade fell below the red-flag bound vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling. Why it applies: Wenot Inferred grade decreased by 25.8% from 1.82 g/t to 1.35 g/t Evidence · text > 1.35 g/t Au grade of Inferred MRE, a 25.8% decrease \(from 1.82 g/t Au\) **Tonnage Decline** Polarity: negative Definition: Resource tonnage decreased vs prior estimate — pit optimization removed marginal material or geological model revised down. Why it applies: Gilt Indicated tonnage decreased by 9.5% in ounces Evidence · text > Gilt's Indicated MRE decreased by 9.5% to 1,042,000 oz **QP/CP Signed** Polarity: positive Definition: 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: Alan J. San Martin, P.Eng. is named as the Qualified Person Evidence · text > Mr. Alan J. San Martin, P.Eng., Principal Resource Geologist of SLR, and Elaine Ellingham, M.Sc., P.Geo. are both Qualified Persons \(QPs\) **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: Resource estimated in accordance with NI 43-101 standards 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 \(2014\) **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: A current resource fact retains the disclosed cut-off grade **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The source explicitly discloses a revised resource estimate Evidence · text > updated Mineral Resource Estimate ## Extracted facts Stored fact records: 6. Some facts used in scoring do not have a stored record. ## Resource Estimates (6) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38--ad492fba-1278-43a4-8a24-7c9637885590#fact-resource-facts-0) Omai Gold Property · gold #### Identity - Project: Omai Gold Property - Commodity: gold - Region: guyana - Reported Region: Guyana - Ticker: OMG #### Resource scope - Estimate type: resource - Effective date: 2026-04-07T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Alan J. San Martin, Elaine Ellingham - Resource group id: resource:b272502e5e1869138b50 - Deposit or zone: Omai Gold Property - Mining method: combined - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 38100000 - Grade: 2.04 - Grade Unit: g/t - Contained Metal: 2495000 - Contained Unit: oz - Cutoff Grade: 0.3 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-04-07 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Combined property-wide indicated resource shows strong growth in both tonnage and contained metal. - Positive factor: Significant tonnage and ounce growth Evidence · text > combined updated MRE \(over the August 2025 MRE\) of: 2,495,000 ounces of gold \(Indicated MRE\), a 17.6% increase, averaging 2.04 g/t Au in 38.1Mt #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38--ad492fba-1278-43a4-8a24-7c9637885590#fact-resource-facts-1) Omai Gold Property · gold #### Identity - Project: Omai Gold Property - Commodity: gold - Region: guyana - Reported Region: Guyana - Ticker: OMG #### Resource scope - Estimate type: resource - Effective date: 2026-04-07T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Alan J. San Martin, Elaine Ellingham - Resource group id: resource:b997ee98c596ccdeaeaa - Deposit or zone: Omai Gold Property - Mining method: combined - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 106600000 - Grade: 1.59 - Grade Unit: g/t - Contained Metal: 5465000 - Contained Unit: oz - Cutoff Grade: 0.3 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-04-07 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Significant increase in inferred ounces provides substantial exploration upside. - Positive factor: Large scale expansion of inferred resource Evidence · text > 5,465,000 ounces of gold \(Inferred MRE\), a 24.7% increase, averaging 1.59 g/t Au in 106.6 Mt #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38--ad492fba-1278-43a4-8a24-7c9637885590#fact-resource-facts-2) Omai Gold Property · gold #### Identity - Project: Omai Gold Property - Commodity: gold - Region: guyana - Reported Region: Guyana - Ticker: OMG #### Resource scope - Estimate type: resource - Effective date: 2026-04-07T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Alan J. San Martin, Elaine Ellingham - Resource group id: resource:6f3a0b788fe55e8dc97c - Deposit or zone: Wenot Deposit - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 28400000 - Grade: 1.59 - Grade Unit: g/t - Contained Metal: 1453000 - Contained Unit: oz - Cutoff Grade: 0.3 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-04-07 - Prior Tonnes: 20700000 - Prior Grade: 1.46 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Strong conversion of inferred to indicated material at Wenot. - Positive factor: Significant ounce increase via conversion - Positive factor: Grade improvement Evidence · text > Wenot Indicated MRE increased to 1.45 million ounces \("Moz"\) of gold with an average grade of 1.59 g/t Au, contained in 28.4 million tonnes \("Mt"\) #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Tonnage Growth** Polarity: positive Definition: Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved. Why it applies: 28400000 against 20700000 previously **Grade Improvement** Polarity: positive Definition: Average resource grade improved vs prior estimate — better deposit economics. Why it applies: 1.59 against 1.46 previously **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38--ad492fba-1278-43a4-8a24-7c9637885590#fact-resource-facts-3) Omai Gold Property · gold #### Identity - Project: Omai Gold Property - Commodity: gold - Region: guyana - Reported Region: Guyana - Ticker: OMG #### Resource scope - Estimate type: resource - Effective date: 2026-04-07T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Alan J. San Martin, Elaine Ellingham - Resource group id: resource:e14816e2feeb424d8f10 - Deposit or zone: Wenot Deposit - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 92400000 - Grade: 1.35 - Grade Unit: g/t - Contained Metal: 3999000 - Contained Unit: oz - Cutoff Grade: 0.3 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-04-07 - Prior Tonnes: 63400000 - Prior Grade: 1.82 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Inferred grade declined due to conversion of high-grade material to indicated and addition of lower-grade extensions. - Positive factor: Ounce growth - Negative factor: Grade decline Evidence · text > Wenot Inferred MRE increased to 3,999,000 oz grading 1.35 g/t Au, contained in 92.4 Mt. #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Tonnage Growth** Polarity: positive Definition: Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved. Why it applies: 92400000 against 63400000 previously **Grade Decline** Polarity: negative Definition: Average grade fell below the red-flag bound vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling. Why it applies: 1.35 against 1.82 previously **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38--ad492fba-1278-43a4-8a24-7c9637885590#fact-resource-facts-4) Omai Gold Property · gold #### Identity - Project: Omai Gold Property - Commodity: gold - Region: guyana - Reported Region: Guyana - Ticker: OMG #### Resource scope - Estimate type: resource - Effective date: 2026-04-07T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Alan J. San Martin, Elaine Ellingham - Resource group id: resource:22737af8c350dfbe37aa - Deposit or zone: Gilt Deposit - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 9700000 - Grade: 3.33 - Grade Unit: g/t - Contained Metal: 1042000 - Contained Unit: oz - Cutoff Grade: 1.7 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-04-07 #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Indicated resource at Gilt saw a slight decrease in ounces due to more restrictive classification and higher cut-off. - Positive factor: Grade increase - Negative factor: Ounce decrease Evidence · text > Gilt's Indicated MRE decreased by 9.5% to 1,042,000 oz averaging 3.33 g/t Au \(in 9.7 Mt\) #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/omai-gold-increases-indicated-mineral-resources-to-2-5-moz-au-at-2-04-g-t-au-38--ad492fba-1278-43a4-8a24-7c9637885590#fact-resource-facts-5) Omai Gold Property · gold Historical result Needs review: historical\_restatement #### Identity - Project: Omai Gold Property - Commodity: gold - Region: guyana - Reported Region: Guyana - Ticker: OMG #### Resource scope - Estimate type: resource - Effective date: 2026-04-07T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Alan J. San Martin, Elaine Ellingham - Resource group id: resource:38aec775a40022ddcd9f - Deposit or zone: Gilt Deposit - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 14200000 - Grade: 3.22 - Grade Unit: g/t - Contained Metal: 1465000 - Contained Unit: oz - Cutoff Grade: 1.7 - Cutoff Unit: g/t Au #### Prior Estimate - Resource Date: 2026-04-07 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes #### Dates - Event date: 2026-04-14T00:00:00.000Z Reasoning: Significant expansion of Inferred resource at Gilt due to new deep drilling and re-examination of upper zones. - Positive factor: Massive ounce increase - Negative factor: Grade decline Evidence · text > Gilt's Inferred MRE increased 120% to 1,465,000 oz averaging 3.22 g/t Au \(in 14.2 Mt\) #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: 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: qp\_signed is true **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ## 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.