Widest and Highest-Grade Caesium Intercepts to Date at Vega including 28.0 m at 8.05% Cs2O and 2.2 m at 26.48% Cs2O
PMET Resources Inc.
Suite 900 - 1801 McGill College, Montreal, Qc, Canada, H3A 1Z4
www.pmet.ca / TSX: PMET / ASX: PMT / OTC: PMETF / FSE: R9GA
Widest and Highest-Grade Caesium Intercepts to Date at Vega
including 28.0 m at 8.05% Cs2O and 2.2 m at 26.48% Cs2O
February 3, 2026 – Montreal, QC, Canada February 4, 2026 – Sydney, Australia
HIGHLIGHTS
• Widest and highest -grade caesium intercepts reported to date at the Vega
Zone:
o 28.0 m at 8.05% Cs2O including 18.3 m at 11.84% Cs2O (CV25-948).
o 18.2 m at 7.13% Cs2O including 3.0 m at 23.63% Cs2O (CV25-1023).
o 5.5 m at 14.83% Cs2O including 2.2 m at 26.48% Cs2O (CV25-1006)
Includes highest-grade sample reported to date at 29.79% Cs2O
o 11.5 m at 1.75% Cs2O including 2.9 m at 3.88% Cs2O (CV25-1025).
o 16.1 m at 1.43% Cs2O including 1.3 m at 11.08% Cs2O (CV25-1010).
• Interpreted footprint and width of caesium mineralization at Vega expanded.
• High-grade caesium intercept from in-fill drilling at the Rigel Zone:
o 6.2 m at 5.12% Cs2O including 2.1 m at 13.68% Cs2O (CV25-914).
• High-grade caesium confirmed at the newly-discovered Helios Zone:
o 1.0 m at 21.52% Cs2O (CV25-975).
• Caesium assay results reported in this announcement for 8,596 m (52 holes) drilled at the
CV13 Pegmatite – including the Vega, Rigel, and Helios Zones.
o Caesium assay results for 1,176 m (7 holes) from the Vega and Helios
Zones remain pending.
Darren L. Smith, Executive Vice President Exploration, comments: “Shaakichiuwaanaan continues to
deliver impressive results, with the 2025 drill campaign returning the highest caesium grades reported to
date at the Property – including a peak assay of 29.8% Cs2O – and confirming high-grade caesium at the
newly discovered Helios Zone. With multiple intercepts exceeding 25% Cs 2O, dominant pollucite
mineralogy, and scale already demonstrated through defined Mineral Resources , the opportunity for the
Company to further enhance shareholder value through this caesium deposit is meaningful.”
“We look forward to reporting caesium results for the remaining holes outstanding and integrating this
opportunity into the overall Project development scenario,” added Mr. Smith.
Figure 1: Drill hole result highlights at the CV13 Pegmatite (caesium).
PMET RESOURCES INC. (THE “COMPANY” OR “PMET”) (TSX: PMET) (ASX: PMT)
(OTCQX: PMETF) (FSE: R9GA) is pleased to report caesium assay results for diamond drill
holes completed at the CV13 Pegmatite , as part of its extensive 2025 drill campaign at the
Company’s wholly-owned Shaakichiuwaanaan Property (the “Property” or “Project”), located in
the Eeyou Istchee James Bay region of Quebec.
In addition to being one of the largest lithium-tantalum pegmatite Mineral Resources1 and lithium
pegmatite Mineral Reserves2 globally, the Property also hosts the world’s largest in-situ pollucite-
1 The Consolidated MRE (CV5 + CV13 pegmatites), which includes the Rigel and Vega caesium zones, totals 108.0 Mt at 1.40% Li2O, 0.11%
Cs2O, 166 ppm Ta2O5, and 66 ppm Ga, Indicated, and 33.4 Mt at 1.33% Li 2O, 0.21% Cs2O, 155 ppm Ta2O5, and 65 ppm Ga, Inferred,
and is reported at a cut-off grade of 0.40% Li2O (open-pit), 0.60% Li2O (underground CV5), and 0.70% Li2O (underground CV13). A grade
constraint of 0.50% Cs2O was used to model the Rigel and Vega caesium zones. Effective Date is June 20, 2025 (through CV24-787). Mineral
Resources are not Mineral Reserves as they do not have demonstrated economic viability. Mineral Resources are inclusive of Mineral Reserves.
2 Probable Mineral Reserve of 84.3 Mt at 1.26% Li2O at the CV5 Pegmatite with a cut-off grade is 0.40% Li2O (open-pit) and 0.70% Li2O
(underground). Underground development and open -pit marginal tonnage containing material above 0.37% Li 2O are also included in the
statement. The Effective Date is September 11, 2025. See Feasibility Study news release dated October 20, 2025.
hosted caesium pegmatite Mineral Resource, with 0.69 Mt at 4.40% Cs2O (Indicated) and 1.70 Mt
at 2.40% Cs2O (Inferred). The CV13 Pegmatite, host to the caesium Mineral Resource, is located
~3 km along trend from the CV5 Pegmatite, which is situated approximately 13 km south of the
regional Trans-Taiga Road and powerline infrastructure corridor, and is accessible year -round by
road.
As part of its expansive 2025 drill campaign at Shaakichiuwaanaan, the Company completed further
delineation drilling at the Vega and Rigel caesium zones. This exploration campaign also resulted
in the discovery of the Helios Caesium Zone. All three caesium zones – Vega, Rigel, and Helios –
are situated within the CV13 Pegmatite and are largely coincident with lithium and tantalum
mineralization.
Core assay results for caesium for 8,596 m (52 holes) at the CV13 Pegmatite are reported in this
announcement, including prior pending overlimit3 analysis (see Figure 1, Table 1, Table 2, Table 3).
Core assay results for caesium for 1,176 m (7 holes), covering the Vega and Helios zones, remain
to be reported. Results for lithium and tantalum for all drill holes completed in 2025 at
Shaakichiuwaanaan were previously reported (see news releases dated December 14, 2025 and
January 21, 2026). All reported widths are core length (i.e., apparent and not true width).
VEGA CAESIUM ZONE
The strongest caesium results to date from the Property were returned from the 2025
drill campaign at the Vega Zone, including ten (10) individual samples grading >20% Cs2O and four
(4) grading >25% Cs2O to a peak of 29.79%, as well as multi-metre intercepts including 3.0 m
at 23.63% Cs2O, 3.0 m at 23.05 Cs2O, and 2.2 m at 26.48% Cs2O (see Table 1, Figure 3, and
Figure 4). Most of the holes were completed as infill, targeting a central high-grade core that had
been interpreted from previous drilling. However, several holes were also completed at the
margins of the modelled zone (e.g., CV25 -1006). Based on the assay results reported in this
announcement, the interpreted footprint and width of the caesium mineralization at
Vega have increased. At Vega, drill result highlights for caesium include:
• 28.0 m at 8.05% Cs2O including 18.3 m at 11.84% Cs2O (CV25-948), see Figure 2.
• 18.2 m at 7.13% Cs2O including 3.0 m at 23.63% Cs2O (CV25-1023), see Figure 3.
• 5.5 m at 14.83% Cs2O including 2.2 m at 26.48% Cs2O (CV25-1006), see Figure 4.
o Includes highest-grade sample reported to date at the Project –
29.79% Cs2O
• 11.5 m at 1.75% Cs2O including 2.9 m at 3.88% Cs2O (CV25-1025).
• 16.1 m at 1.43% Cs2O including 1.3 m at 11.08% Cs2O (CV25-1010).
• 8.8 m at 0.96% Cs2O and 2.9 m at 10.89% Cs2O (CV25-1006).
• 9.8 m at 0.93% Cs2O and 1.2 m at 1.33% Cs2O (CV25-1024).
• 2.7 m at 6.47% Cs2O (CV25-1012)
3 Assay results which exceed the upper detection limit ( 1.06% Cs2O) of the base analytical package require subsequent analysis using a
different analytical package to determine the Cs grade (i.e., overlimit analysis).
Caesium results remain to be reported from Vega for multiple holes with overlimit 4 analysis
pending over intervals of 0.5 to 2.3 m.
Figure 2: Pollucite with late stage lepidolite (purple) and spodumene/pollucite (white) veining displaying
classic “tapioca” texture (white blebs) at a depth of ~126 m in drill hole CV25-948 from the Vega Zone.
Core grades 1.9 m at 17.81% Cs2O (125.0 m to 126.9 m) within a wider mineralized interval of 28.0 m
at 8.05% Cs2O (116.5 m to 144.5 m)
Figure 3: Large pollucite crystals in drill hole CV25 -1023 from the Vega Zone. Core grades 3.0 m at
23.63% Cs2O (from 138.1 m to 141.1 m) within a wider mineralized interval of 18.2 m at 7.13% Cs2O
(138.1 m to 156.2 m)
4 Assay results which exceed the upper detection limit (1.06% Cs2O) of the base analytical package require subsequent analysis using a
different analytical package to determine the Cs grade (i.e., overlimit analysis).
Figure 4: Massive pollucite mineralization in drill hole CV25-1006 from the Vega Zone. Core grades 2.2 m
at 26.48% Cs 2O (165.7 m to 167.8 m), including 1.0 m at 29.79% Cs 2O, within a wider mineralized
interval of 5.5 m at 14.83% Cs2O (162.3 m to 167.8 m)
HELIOS CAESIUM ZONE (A NEW 2025 DISCOVERY)
High-grade caesium mineralization has been confirmed at the Helios discovery (Table 1,
Figure 5). Mineralization has been traced over an area of ~ 180 m x 80 m at ~1 to 3 m thickness
and comes within at least 25 m from surface (vertical depth). Mineralization remains open in several
areas. At Helios, drill result highlights to date for caesium include:
• 1.0 m at 21.52% Cs2O (CV25-975), see Figure 5.
• 0.8 m at 2.22% Cs2O (CV25-986).
• 1.0 m at 1.19% Cs2O (CV25-1004).
Caesium results remain to be reported from Helios for multiple holes with overlimit 5 analysis
pending over intervals of 0.5 m to 4.9 m.
Figure 5: Massive pollucite mineralization in drill hole CV25-975 from the Helio Zone. Core grades 1.0 m
at 21.52% Cs2O (36.5 m to 37.5 m).
RIGEL CAESIUM ZONE
Several holes were completed as infill at the Rigel Zone with results presented in Table 1. The
best caesium result from the program was 6.2 m at 5.12% Cs2O including 2.1 m at 13.68%
Cs2O in drill hole CV25-914. The assay results from the 2025 drill holes have altered the
interpreted eastern footprint of the Rigel Zone, which will be updated as part of the next Mineral
Resource Estimate iteration. Some of the highest caesium grades to date have been reported from
the Rigel Zone, including 1.1 m at 26.61% Cs2O within a wider zone of 3.2 m at 10.24% Cs2O
(CV23-204).
5 Assay results which exceed the upper detection limit (1.06% Cs2O) of the base analytical package require subsequent analysis using a
different analytical package to determine the Cs grade (i.e., overlimit analysis).
NEXT STEPS
Caesium assays results for 1,176 m (7 holes) remain to be reported out of the total 57,024 m (245
holes) completed over the 2025 drill campaign at Shaakichiuwaanaan. These remaining results will
be reported once received and compiled. The l ithium and tantalum assay results have previously
been reported for all 245 holes (see news releases dated December 14, 2025 and January 21,
2026).
The geology team is currently interpreting and working with the 2025 drill hole data to advance
the host rock and pegmatite geological models for the Project. The work is focused on the CV5
and CV13 pegmatites – including the Vega, Rigel, and Helios caesium zones – ahead of updates to
their respective block models and subsequent Mineral Resource Estimate. The Company is also
advancing towards an updated Feasibility Study for the CV5 Pegmatite scheduled for the second
half of 2026. The data will also inform an underground bulk sample of mineralized pegmatite at
CV5, which is currently being permitted.
Table 1: Core assay summary for caesium zones in drill holes reported herein at the CV13 Pegmatite.
Zone Hole ID From
(m)
To
(m)
Interval
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm)
Vega CV25-948 116.5 144.5 28.0 1.47 8.05 225
incl. 116.5 134.8 18.3 1.3 11.84 117
or 120.2 123.1 3.0 0.97 23.05 58
Vega CV25-1006 151.0 153.9 2.9 1.38 10.89 911
162.3 167.8 5.5 1.19 14.83 243
incl. 165.7 167.8 2.2 0.34 26.48 13
or 165.7 166.7 1.0 0.43 29.79 24
179.1 180.8 1.7 0.61 1.38 187
202.2 211.0 8.8 4.57 0.96 166
Vega CV25-1010 130.8 146.9 16.1 2.82 1.43 114
incl. 130.8 132.1 1.3 0.79 11.08 6
incl. 135.9 136.7 0.8 0.80 3.34 87
incl. 143.6 144.8 1.3 5.78 2.69 96
Vega CV25-1012 143.1 145.8 2.7 0.30 6.47 291
Vega CV25-1016 140.5 146.6 6.1 1.35 0.84 146
224.0 225.3 1.3 0.02 4.18 477
Vega CV25-1017A 153.6 155.3 1.8 5.61 1.85 308
159.3 159.9 0.6 3.55 2.50 42
Vega CV25-1021 142.2 142.7 0.5 3.10 1.05 249
Vega CV25-1023 138.1 156.2 18.2 2.31 7.13 206
Zone Hole ID From
(m)
To
(m)
Interval
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm)
incl. 138.1 149.2 11.2 1.60 11.09 76
or 138.1 141.1 3.0 0.59 23.63 18
Vega CV25-1024 89.8 91.0 1.2 0.76 1.33 160
108.5 118.3 9.8 3.49 0.93 214
Vega CV25-1025 136.4 147.9 11.5 1.57 1.75 279
incl. 136.4 139.3 2.9 0.39 3.88 161
incl. 142.6 144.1 1.5 1.44 4.24 644
incl. 147.0 147.9 0.8 3.01 1.32 97
Rigel CV25-913 92.8 97.1 4.3 2.62 0.51 1,618
Rigel CV25-914 73.0 79.2 6.2 1.34 5.12 533
incl. 73.0 75.0 2.1 0.39 13.68 799
Helios CV25-975 36.5 37.5 1.0 1.82 21.52 0
Helios CV25-986 68.3 69.1 0.8 3.90 2.22 227
Helios CV25-1004 53.9 55.0 1.0 3.04 1.19 106
(1) All intervals are core length (i.e., apparent and not true width) and presented for all pegmatite intervals
>1% Cs2O. A 0.5% Cs2O cut-off is used to constrain the pegmatite interval.
Table 2: Core assay summary for lithium, caesium, and tantalum in pegmatite intervals >2 m at the CV13
Pegmatite.
Hole ID From
(m)
To
(m)
Interval
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm) Comments
CV25-913 87.3 102.3 15.0 1.15 0.21 1,105
incl. 92.8 100.7 7.9 2.15 0.38 1,974
104.5 106.5 2.0 0.21 0.00 510
CV25-914 73.0 82.6 9.7 1.34 3.36 752
CV25-917 81.9 85.2 3.4 0.07 0.01 364
88.9 96.1 7.2 0.08 0.05 131
CV25-919 74.4 85.9 11.5 2.87 0.10 413
incl. 76.5 83.4 6.9 4.40 0.11 544
CV25-967 100.0 104.4 4.4 0.14 0.00 348
CV25-969 No >2 m pegmatite intersections
Hole ID From
(m)
To
(m)
Interval
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm) Comments
CV25-971 No >2 m pegmatite intersections
CV25-973 25.0 37.1 12.2 0.38 0.19 90
CV25-975 35.7 38.5 2.8 0.89 7.52 198
CV25-977 29.0 35.4 6.4 2.61 0.11 251
incl. 31.3 35.4 4.1 3.94 0.09 308
CV25-980 50.5 53.1 2.6 2.54 0.07 70
CV25-986 55.3 73.8 18.4 1.19 0.17 132
incl. 64.9 71.8 6.9 2.49 0.35 191
83.1 85.3 2.2 0.17 0.06 289
CV25-989 83.1 88.3 5.2 0.17 0.06 522
CV25-992 44.3 56.8 12.4 1.65 0.05 109
CV25-995 No >2 m pegmatite intersections
CV25-996 No >2 m pegmatite intersections
CV25-998 No >2 m pegmatite intersections
CV25-1000 No >2 m pegmatite intersections
CV25-1001 No >2 m pegmatite intersections
CV25-1004 51.1 60.2 9.1 0.87 0.16 106
CV25-1005 94.1 97.0 2.9 0.16 0.01 445
CV25-1008 46.8 55.9 9.1 1.44 0.05 100
incl. 50.6 55.4 4.8 2.69 0.05 162
CV25-1009 85.6 87.9 2.2 0.31 0.01 397
CV25-1010 128.7 150.8 22.1 2.31 1.07 127
incl. 138.9 147.9 9.0 4.18 0.58 129
CV25-1011 244.7 246.9 2.2 0.39 0.01 108
CV25-1012 141.2 175.5 34.3 1.12 0.64 361
incl. 164.4 175.5 11.0 1.97 0.18 396
CV25-1015 96.2 100.0 3.8 0.08 0.01 2,276
103.5 106.4 2.9 0.14 0.01 338
CV25-1016 119.4 169.1 49.7(3) 2.08 0.18 129
incl. 135.0 135.7 0.7 7.71 0.09 10
incl. 154.5 158.6 4.0 5.16 0.11 83