# Sitka Gold Updates Rhosgobel Gold Deposit Mineral Resource Estimate to Include Tungsten and Silver Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f Original source: https://money.tmx.com/en/quote/SIG/news/7676291942403341/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t Publisher: tmx Original announcement: 2026-05-14T12:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Sitka Gold Corp. - Ticker: SIG - Exchange: TSX - Region: Yukon - Primary commodity: Gold - Secondary commodities: Silver, Tungsten - Document categories: Resource update, Metallurgy - Extracted: 2026-09-16 22:41:49 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Sitka Gold has updated the Rhosgobel Mineral Resource Estimate to include tungsten and silver, adding 2.93 million ounces of silver and 51,345 tonnes of tungsten trioxide to the Rhosgobel Inferred resource. Initial metallurgical testing shows strong recoveries for both gold \(94.3%\) and tungsten \(84.7%\). Reasoning: The update meaningfully expands the Rhosgobel deposit's economic profile by adding tungsten and silver to the existing gold resource, supported by positive initial metallurgical results. - Positive factor: Expansion of resource scope to include tungsten and silver - Positive factor: High gold recovery \(94.3%\) and tungsten recovery \(84.7%\) reported - Positive factor: Large-scale gold system with critical mineral \(tungsten\) dimension - Positive factor: Significant drilling program \(60,000m\) currently underway - Negative factor: Resource is entirely Inferred or Indicated \(no Measured reported\) - Negative factor: Tungsten and silver are currently by-products Facts used in scoring: 8 ## Classification and evidence **Maiden Resource** Polarity: neutral Definition: First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. No prior estimate exists, so every change band is not applicable. Why it applies: The Rhosgobel deposit is described as a newly discovered deposit with a maiden resource being modelled. Evidence · text > The modelling for the maiden resource at Rhosgobel identified a higher grade component **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: A significant portion of the Rhosgobel resource is classified as Inferred. Evidence · text > 100.68 million tonnes grading 0.70 g/t gold, 0.90 g/t silver and 0.051% WO 3 containing 2,250,000 ounces of gold **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: Ron G. Simpson of GeoSim Services Inc. is named as the independent qualified person. Evidence · text > The technical work of the initial MRE was completed by Ron G. Simpson of GeoSim Services Inc. an independent qualified person **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The MRE was prepared in accordance with NI 43-101 standards. Evidence · text > in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum \("CIM"\) Definition Standards incorporated by reference in National Instrument 43-101 **High Recovery** Polarity: positive Definition: Recovery at or above the exceptional band for the commodity and processing route. Why it applies: Gold recovery of 94.3% is in the exceptional band for CIL/CIP. Evidence · text > average gold recovery of 94.3% using conventional whole ore cyanidation leaching **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 **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a mill\_cil route \("CIL"\) **Gravity Route** Polarity: neutral Definition: Gravity separation forms a material part of the flowsheet. Why it applies: the document describes a gravity route \("gravity"\) **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: only one composite was tested ## Extracted facts Stored fact records: 8. 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/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-resource-facts-0) RC Gold Project · gold #### Identity - Project: RC Gold Project - Commodity: gold - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ron G. Simpson - Resource group id: resource:82a27bc706e0b108e773 - Deposit or zone: Blackjack - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 39960000 - Grade: 1.01 - Grade Unit: g/t - Contained Metal: 1.29 - Contained Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Indicated resource component of the total project gold resource. Evidence · text > 1.29 million ounces gold indicated \(39.96 Mt @ 1.01 g/t Au\) at Blackjack #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 ### Rhosgobel [Link to this fact](https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-resource-facts-1) RC Gold Project · gold #### Identity - Project: RC Gold Project - Commodity: gold - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Resource scope - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ron G. Simpson - Resource group id: resource:66ecaa42413c3bb529e3 - Deposit or zone: Rhosgobel - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Tonnes: 100680000 - Grade: 0.7 - Grade Unit: g/t - Contained Metal: 2.25 - Contained Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Large inferred gold resource at Rhosgobel. - Negative factor: Inferred category Evidence · text > 2.25 million ounces \(100.68 Mt @ 0.70 g/t Au\) at Rhosgobel #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 ### Blackjack [Link to this fact](https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-resource-facts-2) RC Gold Project · gold #### Identity - Project: RC Gold Project - Commodity: gold - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Resource scope - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ron G. Simpson - Resource group id: resource:88bd837236c0af81f425 - Deposit or zone: Blackjack - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Tonnes: 34600000 - Grade: 0.94 - Grade Unit: g/t - Contained Metal: 1.04 - Contained Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Inferred gold resource at Blackjack. Evidence · text > 1.04 million ounces \(34.60 Mt @ 0.94 g/t Au\) at Blackjack #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 ### Eiger [Link to this fact](https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-resource-facts-3) RC Gold Project · gold #### Identity - Project: RC Gold Project - Commodity: gold - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Resource scope - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ron G. Simpson - Resource group id: resource:2f5c52ed78cba544d93b - Deposit or zone: Eiger - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Tonnes: 32140000 - Grade: 0.52 - Grade Unit: g/t - Contained Metal: 0.54 - Contained Unit: moz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Inferred gold resource at Eiger. Evidence · text > 0.54 million ounces \(32.14 Mt @ 0.52 g/t Au\) at Eiger #### Tags used in scoring **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-resource-facts-4) RC Gold Project · silver #### Identity - Project: RC Gold Project - Commodity: silver - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ron G. Simpson - Resource group id: resource:caa719920025da30915d - Deposit or zone: Rhosgobel - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 100680000 - Grade: 0.9 - Grade Unit: g/t - Contained Metal: 2926000 - Contained Unit: oz #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Newly included silver resource at Rhosgobel. Evidence · text > 2.93 million ounces of silver inferred \(100.68 Mt @ 0.90 g/t Ag\) at Rhosgobel #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-resource-facts-5) RC Gold Project · tungsten #### Identity - Project: RC Gold Project - Commodity: tungsten - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Resource scope - Estimate type: resource - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Ron G. Simpson - Resource group id: resource:caa719920025da30915d - Deposit or zone: Rhosgobel - Mining method: open\_pit - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 100680000 - Grade: 0.051 - Grade Unit: % WO 3 - Contained Metal: 51345 - Contained Unit: t #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Newly included tungsten resource at Rhosgobel. Evidence · text > 51,345 tonnes of WO 3 \(tungsten trioxide\) inferred \(100.68 Mt grading 0.051% WO 3 \) at Rhosgobel #### 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was 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 ## Metallurgical Results (2) ### Fact 1 [Link to this fact](https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-metallurgical-facts-6) RC Gold Project · gold #### Identity - Project: RC Gold Project - Commodity: gold - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Test Work - Processing Route: whole ore cyanidation leaching - Sample: Rhosgobel whole ore #### Recovery - Recovery: 94.3 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Strong gold recovery using conventional CIL/CIP methods. Evidence · text > average gold recovery of 94.3% using conventional whole ore cyanidation leaching #### Tags used in scoring **Byproduct Commodity** Polarity: neutral Definition: The tested commodity is a byproduct rather than the primary economic driver. Why it applies: the release describes a byproduct credit ### Fact 2 [Link to this fact](https://atlas-extractions.minestarters.com/news/sitka-gold-updates-rhosgobel-gold-deposit-mineral-resource-estimate-to-include-t--52dbd772-90e9-4765-a8cc-11773558b91f#fact-metallurgical-facts-7) RC Gold Project · tungsten #### Identity - Project: RC Gold Project - Commodity: tungsten - Region: canada\_yt - Reported Region: Yukon - Ticker: SIG #### Test Work - Processing Route: rougher flotation - Sample: Rhosgobel rougher concentrate #### Recovery - Recovery: 84.7 % - Recovery Basis: actual\_test #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-05-14T00:00:00.000Z Reasoning: Good initial tungsten recovery via flotation. Evidence · text > initial recovery of 84.7% tungsten in rougher concentrate using conventional floatation #### Tags used in scoring **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: processing\_route matches the flotation signal **Byproduct Commodity** Polarity: neutral Definition: The tested commodity is a byproduct rather than the primary economic driver. Why it applies: the release describes a byproduct credit ## 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.