Grid Metals Reports Best Intercept to Date at Falcon West Cesium Project of 16.5% Cs2O over 3.45m
Grid Metals Reports Best Intercept to Date at Falcon West Cesium
Project of 16.5% Cs2O over 3.45m
December 4, 2025 TORONTO -- Grid Metals Corp. (TSXV: GRDM; OTCQB: MSMGF) ("Grid" or
the "Company") is pleased to announce additional high-grade cesium assays from the Lucy South
target zone at its 100%-owned Falcon West cesium property (the "Property”). The current drill
program is defining a high-grade near surface zone of pollucite -hosted cesium mineralization.
Cesium is a globally scarce critical metal vital to a number of emerging high-tech applications. It
was recently classified as a critical metal by Canada and the United States.
Program Highlights
• High-grade cesium intercepts, including 4.0m at 10.4% Cs2O with 1.2m at 27.1% Cs 2O
(LU25-08) and 3.45m at 16.8% Cs 2O (LU25-09), are amongst the h ighest Cs 2O drill
intercepts reported globally, in recent years.
• Reported drill holes confirm near surface high-grade pollucite-hosted cesium
mineralization as well as high-grade lithium and rubidium . Pollucite is a highly sought -
after cesium mineral that is the principal feedstock for cesium chemical production.
• Drilling is targeting the southeastern part of the Lucy pegmatite where it forms a flat-
lying, near surface and highly fractionated LCT-type (lithium -cesium- and tantalum -
enriched) pegmatite that is approximately ten (10) metres thick. A total of 67 drill holes
(3,035 metres) were completed in the first phase of the program. Assay results from the
remaining 56 drill holes are pending.
• High-grade cesium intercepts are now defined over a strike length of approximately 100
metres, and the cesium enrichment trend remains open in multiple directions, with phase
2 of the drilling campaign expected to commence in mid-January, 2026.
Table 1: Analytical Results for Drill Holes LU25 -06 to LU25 -11, Lucy South cesium target. See
Appendix for hole locations. Note the true thickness for each interval reported is estimated to
represent between 90% and 100% of the reported interval lengths.
Hole ID
From
(m)
To
(m)
Length
(m)
Cs2O
(%)
Li2O
(%)
Rb2O
(%)
Ta2O5
(ppm) Comments
LU25-06 19.30 25.75 6.45 1.91 0.63 0.99 180 Li-Cs-Rb-Ta Enriched Section
inc. 22.77 25.75 2.98 3.73 0.98 0.48 370 Pollucite-rich Section
with 22.77 24.15 1.38 7.16 1.70 0.48 210 Pollucite-rich Section
LU25-07 19.90 22.76 2.86 0.48 0.83 0.66 201 Li-Cs-Rb-Ta Enriched Section
inc. 20.66 20.85 0.19 4.76 1.82 0.23 186 Pollucite-rich Section
LU25-08 21.76 30.90 9.14 4.69 0.59 0.30 136 Li-Cs-Rb-Ta Enriched Section
inc. 21.76 25.80 4.04 10.42 0.76 0.30 5 Pollucite-rich Section
with 21.76 23.00 1.24 27.09 0.27 0.77 2 Pollucite-rich Section
and 25.30 25.80 0.50 16.52 1.74 0.49 20 Pollucite-rich Section
LU25-09 14.60 29.55 14.95 3.96 0.55 0.29 65 Li-Cs-Rb Enriched Section
inc. 15.55 19.00 3.45 16.79 0.86 0.69 17 Pollucite-rich Section
LU25-10 43.78 50.24 6.46 0.11 2.42 0.33 243 Li-Rb-Ta Enriched Section
inc. 44.90 48.17 3.27 0.04 3.64 0.06 280 Li-rich Section
LU25-11 31.50 44.32 12.82 0.04 0.89 0.18 48 Li-Rb-Ta Enriched Section
inc. 40.56 42.82 2.26 0.04 3.17 0.15 52 Li-rich Section
Figure 1: Map of Lucy South target area with interpreted pierce points into the top of the flat -
lying Lucy LCT pegmatite projected to surface for holes LU25 -01 to LU25-11 and previous holes
completed in this area The initial target area is outlined in black.
Drill Results Discussion
Highlights from the second batch of assays (holes 6-11) include 4.04 metres with 10.4% Cs2O and
0.76% Li2O (LU25-08; from 21.8 metres) and 3.45 metres at 16.8% Cs 2O and 0.86% Li2O (LU25-
09; from 15.6 metres). The highest-grade intercept to date in the program was a sub -interval of
1.24m grading 27.1% Cs2O in drill hole LU25-08.
The initial phase of the current drill program focused on defining the distribution of pollucite
within a 150m x 40 m near surface target area (Figure 1) using closely-spaced drill hole pierce
points into the southeastern part of the Lucy pegmatite . All holes reported to date have
intersected a highly fractionated section of the Lucy pegmatite including variably developed
subzones enriched in cesium (pollucite +/- mica, feldspar), lithium (spodumene +/ - lepidolite),
rubidium (feldspar and mica) and tantalum (tantalite). Pollucite, where present, is typically
concentrated in the middle of the pegmatite.
The pollucite -enriched part of the southeastern target area is fully open to the north for a
distance of over 100 metres and is partly open to the northwest and southeast. Phase 2 of the
current drilling program is expected to commence in January and will focus on these adjoining,
high potential areas.
Project and Cesium Overview
The Falcon West Cesium Project is one of only three known high-grade cesium exploration
projects under development globally. Cesium -rich pollucite ore can be crushed and ore sorted
to a high -value pollucite concentrate which is the principal feedstock for cesium chemical
production. As such, the capital intensity of producing a high -grade cesium concentrate from
near surface material could be extremely low as a conventional mill and tailings facility would not
be required.
Cesium is an extremely high-value material with the current price of cesium carbonate trading
for US$218,000/t1, approximately twenty times the value of lithium carbonate. Its unique
properties mean it has a wide variety of industrial applications in the oil and gas, optical, medical
and next-generation solar industries.
Quality Assurance and Quality Control
The Company’s ongoing exploration program at the Falcon West lithium property is being
supervised by Dave Peck, P.Geo. Grid Metals applies best practice quality assurance and quality
control ("QAQC") protocols on all of its exploration programs. For the current program , all core
was logged and sampled at the Company’s core facility located on its Makwa nickel property.
1 SMM pricing, China VAT excluded as of November 2025
Generally, 1.0 metre sample lengths were used. Samples were bagged and tagged and then
transported by secure carrier to the Activation Laboratories facility in Ancaster, Ontario for
sample preparation and analysis for lithium, cesium, rubidium, tantalum and selected major and
trace element abundances using a sodium peroxide fusion total digestion method followed by
ICP-OES and ICP-MS analysis. The Company is using two rare metal certified reference materials
("CRMs") and an analytical blank for the program to monitor analytical accuracy and check for
cross contamination between samples. The blank and CRM results for the reported intervals
were determined to fall within the accepted range of deviation from the certified values.
Dr. Dave Peck, P.Geo., the Company’s Vice President, Exploration, has reviewed and approved
the technical information contained in this release.
About Grid Metals Corp.
Grid Metals is focused on exploration and development in southeastern Manitoba with four key
projects in the Bird River area.
1) The Makwa Property (Ni -Cu-PGM-Co), which is subject to an Option and Joint Venture
Agreement with Teck Resources Limited (“Teck”) . Teck can earn up to a 70% interest in
Makwa by incurring a total of CAD$17.3 million, comprising project expenditures
(CAD$15.7 million) and cash payments or equity participation (CAD$1.6 million) with Grid.
Makwa is located on the south arm of the Bird River Greenstone Belt.
2) The Mayville Property (Cu-Ni) is located on the north arm of the Bird River Greenstone
Belt. The property is owned subject to a minority interest. The project contains a NI 43 -
101 compliant open pit resource of 32 million tonnes grading 0.61% CuEq.
3) The Falcon West Property (Li -Cs) is located 110 km east of Winnipeg along the Trans -
Canada highway and contains highly anomalous cesium values including 3.0 m at 14.0%
Cs2O and 3.5 m at 16.8% Cs2O.
4) The Donner Property (Li-Cs) is adjacent to the Mayville Property, and Grid owns 75% of
the project. The project contains a NI 43-101 compliant resource of 6.8 million tonnes
grading 1.39% Li2O.
All of the Company’s southeastern Manitoba projects are located on the ancestral lands of the
Sagkeeng First Nation with whom the Company maintains an Exploration Agreement.
On Behalf of the Board of Grid Metals Corp.
For more information about the Company, please visit our website at www.gridmetalscorp.com
or contact:
Robin Dunbar – President, CEO & Director – [email protected]
Brandon Smith – Chief Development Officer – [email protected]
David Black – Investor Relations – [email protected]
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
We seek safe harbour. This news release contains forward -looking statements within the meaning of the
United States Private Securities Litigation Reform Act of 1995 and forward-looking information within the
meaning of the Securities Act (Ontario) (togethe r, "forward-looking statements"). Such forward -looking
statements include the Company’s intended use of proceeds and receipt of regulatory approvals , th e
overall economic potential of its properties, the availability of adequate financing and involve known and
unknown risks, uncertainties and other factors which may cause the actual results, performance or
achievements expressed or implied by such forward -looking statements to be materially different. Such
factors include, among others, risks and uncertainties relating to potential political risk, uncertainty of
production and capital costs estimates and the potential for unexpected costs and expenses, physical risks
inherent in mining operations, metallurgical risk, currency fluctuations, fluctuations in the price of nickel,
cobalt, copper and other metals, completion of economic evaluations, changes in project parameters as
plans continue to be refined, the inability or failure to obtain adequate financing on a timely basis, and
other risks and uncertainties, including those described in the Company's Management Discussion and
Analysis for the most recent financial period and Material Change Reports filed with the Canadian
Securities Administrators and available at www.sedarplus.ca.
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Appendix: Drill hole specifications. Collar coordinates are based on the NAD 83 datum and the UTM Zone
15N projection.
Drill Hole Easting
(m)
Northing
(m)
Elevation
(m)
Length
(m)
Azimuth
(°)
Dip
(°)
LU25-06 321676 5502680 327.4 42 0 -90
LU25-07 321676 5502680 327.4 30 15 -72
LU25-08 321676 5502680 327.4 36 215 -65
LU25-09 321676 5502680 327.4 39 280 -65
LU25-10 321650 5502586 333.1 60 315 -45
LU25-11 321650 5502586 333.1 72 315 -60