Grid Metals Announces Maiden Cesium Resource at Falcon West; Establishes Lucy South Cesium Deposit as the World's Second Largest Cesium Resource in Active Development

Original announcement by accesswire on

Company
Grid Metals Corp.
Ticker
GRDM
Exchange
Unavailable
Region
Manitoba
Primary commodity
Cesium
Secondary commodities
Lithium
Document categories
Resource update
Extracted
2026-09-30 11:37:02 UTC

Analysis by Minestarters Atlas

Atlas analysis published:

Minestarters Atlas analysis

Summary

Grid Metals has announced a maiden Mineral Resource Estimate for the Lucy South cesium-lithium-tantalum deposit at its Falcon West Property in Manitoba. The resource consists of 51,500 tonnes in the Measured category, with a high-grade Pollucite Zone included in the estimate.

Reasoning: The announcement of a maiden Measured resource for a critical metal (cesium) at a high-grade intercept is a major de-risking and value-creation milestone.

Positive factors

  • Maiden resource establishes a significant global cesium asset
  • 100% of the resource is in the high-confidence Measured category
  • High-grade Pollucite Zone identified within the LCT zone
  • Project is proximal to infrastructure and hydro-electric power

Negative factors

  • Small total tonnage (51.5 kt) compared to major global deposits

Facts used in scoring: 4

Classification and evidence

Maiden Resourceneutral

First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component.

Why it applies: The company explicitly states this is a maiden Mineral Resource Estimate at the Lucy South pegmatite.

Evidence · text

“is pleased to announce a maiden Mineral Resource Estimate ("MRE")”

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: The MRE was prepared in compliance with NI 43-101 standards.

Evidence · text

“in compliance with National Instrument 43-101”

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: Rohan Millar, P.Geo., is named as the independent Qualified Person who reviewed and approved the estimate.

Evidence · text

“estimated by Rohan Millar, P.Geo., of SGS Geological Services, an independent Qualified Person”

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: The cut-off grade of 0.2% Cs 2 O is clearly stated in the resource table and text.

Evidence · table

“0.2”

Context: LCT

Extracted facts

Stored fact records: 4. Some facts used in scoring do not have a stored record.

Resource Estimates (4)

measuredFalcon West · cesiumTonnes: 51500Grade: 2.58Grade Unit: % Cs 2 OView all details
Link to this fact

Identity

Project
Falcon West
Commodity
cesium
Region
canada_mb
Reported Region
Manitoba
Ticker
GRDM

Resource scope

Estimate type
resource
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Rohan Millar
Resource group id
resource:3a566fc9f0b7cc7d21da
Deposit or zone
LCT
Mining method
combined
Material type
pegmatite
Ownership percent
100 %

Resource Data

Category
measured
Tonnes
51500
Grade
2.58
Grade Unit
% Cs 2 O
Cutoff Grade
0.2
Cutoff Unit
% Cs 2 O

Prior Estimate

Resource Date
2026-09-25

Lab

Laboratory
Activation Laboratories

Review

Needs Review
No
Historical
No

Dates

Event date
2026-09-30T00:00:00.000Z

Reasoning: High confidence maiden resource for a critical metal.

Positive factors

  • Maiden resource
  • 100% Measured category

Evidence · table

“2.58”

Context: 51,500

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

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: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

measuredFalcon West · lithiumTonnes: 51500Grade: 1.47Grade Unit: % Li 2 OView all details
Link to this fact

Identity

Project
Falcon West
Commodity
lithium
Region
canada_mb
Reported Region
Manitoba
Ticker
GRDM

Resource scope

Estimate type
resource
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Rohan Millar
Resource group id
resource:3a566fc9f0b7cc7d21da
Deposit or zone
LCT
Mining method
combined
Material type
pegmatite
Ownership percent
100 %

Resource Data

Category
measured
Tonnes
51500
Grade
1.47
Grade Unit
% Li 2 O
Cutoff Grade
0.2
Cutoff Unit
% Cs 2 O

Prior Estimate

Resource Date
2026-09-25

Lab

Laboratory
Activation Laboratories

Review

Needs Review
No
Historical
No

Dates

Event date
2026-09-30T00:00:00.000Z

Reasoning: Significant lithium byproduct in a cesium-dominant resource.

Positive factors

  • Co-product lithium enrichment

Evidence · table

“1.47”

Context: 51,500

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

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: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

measuredFalcon West · cesiumTonnes: 15600Grade: 5.19Grade Unit: % Cs 2 OView all details
Link to this fact

Identity

Project
Falcon West
Commodity
cesium
Region
canada_mb
Reported Region
Manitoba
Ticker
GRDM

Resource scope

Estimate type
resource
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Rohan Millar
Resource group id
resource:a89776d2d76738d9f5a7
Deposit or zone
Pollucite
Mining method
combined
Material type
pegmatite
Ownership percent
100 %

Resource Data

Category
measured
Tonnes
15600
Grade
5.19
Grade Unit
% Cs 2 O
Cutoff Grade
0.2
Cutoff Unit
% Cs 2 O

Prior Estimate

Resource Date
2026-09-25

Lab

Laboratory
Activation Laboratories

Review

Needs Review
No
Historical
No

Dates

Event date
2026-09-30T00:00:00.000Z

Reasoning: High-grade core within the LCT zone.

Positive factors

  • Very high grade cesium zone

Evidence · table

“5.19”

Context: 15,600

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

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: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

measuredFalcon West · lithiumTonnes: 15600Grade: 1.76Grade Unit: % Li 2 OView all details
Link to this fact

Identity

Project
Falcon West
Commodity
lithium
Region
canada_mb
Reported Region
Manitoba
Ticker
GRDM

Resource scope

Estimate type
resource
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Rohan Millar
Resource group id
resource:a89776d2d76738d9f5a7
Deposit or zone
Pollucite
Mining method
combined
Material type
pegmatite
Ownership percent
100 %

Resource Data

Category
measured
Tonnes
15600
Grade
1.76
Grade Unit
% Li 2 O
Cutoff Grade
0.2
Cutoff Unit
% Cs 2 O

Prior Estimate

Resource Date
2026-09-25

Lab

Laboratory
Activation Laboratories

Review

Needs Review
No
Historical
No

Dates

Event date
2026-09-30T00:00:00.000Z

Reasoning: Strong lithium grades in the high-grade cesium zone.

Positive factors

  • High grade lithium byproduct

Evidence · table

“1.76”

Context: 15,600

Tags used in scoring

Measured Resourcepositive

Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.

Why it applies: category is "measured"

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: cutoff_grade is stated

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: qp_signed is true

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: reporting_standards includes ni_43_101

No Contained Metalnegative

Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.

Why it applies: contained_metal was not reported

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.