# RETRANSMISSION: Ridgestone Releases Maiden Mineral Resource Estimate at Guadalupe y Calvo, Mexico Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709 Original source: https://money.tmx.com/en/quote/RMI/news/4953846333893824/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe Publisher: tmx Original announcement: 2021-05-11T13:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Ridgestone Mining Inc. - Ticker: RMI - Exchange: TSX - Region: Chihuahua, Mexico - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Resource update - Extracted: 2026-09-18 19:13:13 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Ridgestone Mining has announced a maiden NI 43-101 Mineral Resource Estimate for its Guadalupe y Calvo gold-silver project in Mexico. The estimate includes 6.43 Mt of Indicated and 3.07 Mt of Inferred resources, totaling approximately 356,000 oz AuEq \(Indicated\) and 460,000 oz AuEq \(Inferred\). Reasoning: The announcement of a maiden NI 43-101 mineral resource estimate for the Guadalupe y Calvo project is a major milestone, establishing a significant gold-silver resource base. - Positive factor: Maiden resource establishment - Positive factor: Significant gold-equivalent ounces - Positive factor: NI 43-101 compliant - Positive factor: Independent QP sign-off - Negative factor: High proportion of Inferred resource 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: First formal MRE for the project. Evidence · text > maiden National Instrument 43-101 \(NI 43-101\) Mineral Resource Estimate **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: Resource estimate prepared in compliance with NI 43-101. Evidence · text > complies with National Instrument 43-101 **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: Marc Jutras, P.Eng. is named as the independent QP. Evidence · text > prepared by Mr. Marc Jutras of Ginto Consulting Inc., an independent Qualified Person **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 resource is in the Inferred category. Evidence · text > Total Inferred 3,074,146 **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 ## Extracted facts Stored fact records: 8. Some facts used in scoring do not have a stored record. ## Resource Estimates (8) ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-0) Guadalupe y Calvo · silver #### Identity - Project: Guadalupe y Calvo - Commodity: silver - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:18716e1c96b1205186cd - Deposit or zone: Rosario and Nankin veins - Mining method: open\_pit - Material type: null #### Resource Data - Category: indicated - Tonnes: 5865413 - Grade: 46.3 - Grade Unit: g/t - Contained Metal: 8734564 - Contained Unit: oz - Cutoff Grade: 0.27 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: Indicated silver grade in open pit component of maiden resource. Evidence · table > 46.3 Context: 5,865,413 #### 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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-1) Guadalupe y Calvo · gold #### Identity - Project: Guadalupe y Calvo - Commodity: gold - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:18716e1c96b1205186cd - Deposit or zone: Rosario and Nankin veins - Mining method: open\_pit - Material type: null #### Resource Data - Category: indicated - Tonnes: 5865413 - Grade: 0.97 - Grade Unit: g/t - Contained Metal: 182133 - Contained Unit: oz - Cutoff Grade: 0.27 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: Indicated gold grade in open pit component of maiden resource. Evidence · table > 0.97 Context: 5,865,413 #### 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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-2) Guadalupe y Calvo · gold #### Identity - Project: Guadalupe y Calvo - Commodity: gold - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:854786a413ea14dc5b48 - Deposit or zone: Rosario and Nankin veins - Mining method: underground - Material type: null #### Resource Data - Category: indicated - Tonnes: 562031 - Grade: 1.92 - Grade Unit: g/t - Contained Metal: 34733 - Contained Unit: oz - Cutoff Grade: 1.33 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: Indicated gold grade in underground component of maiden resource. Evidence · table > 1.92 Context: 562,031 #### 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 ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-3) Guadalupe y Calvo · silver #### Identity - Project: Guadalupe y Calvo - Commodity: silver - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:854786a413ea14dc5b48 - Deposit or zone: Rosario and Nankin veins - Mining method: underground - Material type: null #### Resource Data - Category: indicated - Tonnes: 562031 - Grade: 94.1 - Grade Unit: g/t - Contained Metal: 1700679 - Contained Unit: oz - Cutoff Grade: 1.33 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: Indicated silver grade in underground component of maiden resource. Evidence · table > 94.1 Context: 562,031 #### 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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-4) Guadalupe y Calvo · gold #### Identity - Project: Guadalupe y Calvo - Commodity: gold - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:4281602b3befcff462ae - Deposit or zone: Rosario and Nankin veins - Mining method: open\_pit - Material type: null #### Resource Data - Category: inferred - Tonnes: 584637 - Grade: 0.75 - Grade Unit: g/t - Contained Metal: 14101 - Contained Unit: oz - Cutoff Grade: 0.27 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: Inferred gold grade in open pit component. Evidence · table > 0.75 Context: 584,637 #### 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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-5) Guadalupe y Calvo · silver #### Identity - Project: Guadalupe y Calvo - Commodity: silver - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:4281602b3befcff462ae - Deposit or zone: Rosario and Nankin veins - Mining method: open\_pit - Material type: null #### Resource Data - Category: inferred - Tonnes: 584637 - Grade: 37.7 - Grade Unit: g/t - Contained Metal: 707975 - Contained Unit: oz - Cutoff Grade: 0.27 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: Inferred silver grade in open pit component. Evidence · table > 37.7 Context: 584,637 #### 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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-6) Guadalupe y Calvo · gold #### Identity - Project: Guadalupe y Calvo - Commodity: gold - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:8a8b42cbe9d4144eb49c - Deposit or zone: Rosario and Nankin veins - Mining method: underground - Material type: null #### Resource Data - Category: inferred - Tonnes: 2489509 - Grade: 4.02 - Grade Unit: g/t - Contained Metal: 321516 - Contained Unit: oz - Cutoff Grade: 1.33 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: High grade inferred gold in underground component. Evidence · table > 4.02 Context: 2,489,509 #### 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 ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/retransmission-ridgestone-releases-maiden-mineral-resource-estimate-at-guadalupe--e5de8fcb-5f84-48e5-b66d-a7db63acd709#fact-resource-facts-7) Guadalupe y Calvo · silver #### Identity - Project: Guadalupe y Calvo - Commodity: silver - Region: mexico - Reported Region: Chihuahua, Mexico - Ticker: RMI #### Resource scope - Estimate type: resource - Effective date: 2021-05-10T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Marc Jutras - Resource group id: resource:8a8b42cbe9d4144eb49c - Deposit or zone: Rosario and Nankin veins - Mining method: underground - Material type: null #### Resource Data - Category: inferred - Tonnes: 2489509 - Grade: 107.5 - Grade Unit: g/t - Contained Metal: 8605435 - Contained Unit: oz - Cutoff Grade: 1.33 - Cutoff Unit: g/t AuEq #### Prior Estimate - Resource Date: 2021-05-10 #### Metal Equivalent - Assumptions Disclosed: Yes #### Lab - Laboratory: SGS #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2021-05-11T00:00:00.000Z Reasoning: High grade inferred silver in underground component. Evidence · table > 107.5 Context: 2,489,509 #### 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 ## 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.