HIGH-GRADE SPODUMENE AND TANTALUM CONCENTRATES CONFIRMED AT CASE LAKE Major Highlights Outstanding results from Dense Media Separation (DMS) and flotation test work confirm the high quality and added value of lithium at the Case Lake Project:
HIGH-GRADE SPODUMENE AND TANTALUM
CONCENTRATES CONFIRMED AT CASE
LAKE
Major Highlights
Outstanding results from Dense Media Separation (DMS) and flotation test work confirm
the high quality and added value of lithium at the Case Lake Project:
High 7.70% Li
0 spodumene concentrate
High 99.50% flotation stage recovery
Low 0.66% iron (Fe
O
) impurities
Confirms ability to achieve high lithium recovery and grades through DMS:
High 5.24% Li
0 spodumene concentrate
High 85.82% recovery
Low 0.54% iron (Fe
O
) impurities
Tantalum results returned from Wet Table and Magnetic Separation test work produced
high grades:
12,508 ppm (1.25%) Ta concentrate
45% recovery
Test work on lithium and tantalum confirms potential to produce multiple high-value
mineral products
Case Lake remains the only cesium project currently in development globally –
underpinned by the world's fourth largest cesium resource
VANCOUVER, BC
,
July 7, 2025
/CNW/ - Power Metals Corp (
"Power Metals"
or the
"Company"
)
(TSXV: PWM) (FRANKFURT: OAA1) (OTCQB: PWRMF) is pleased to announce an update on
Metallurgical test work for the Case Lake Cesium Project ("Case Lake") with the confirmation of
high-grade spodumene and tantalite concentrates.
The latest test work affirms confirms Case Lake as a multi-element project, capable of production
high-grade mineral concentrates of cesium (Refer to press releases announced
November 19, 2024
,
December 03, 2024
, and
April 14, 2025
), alongside tantalum and lithium.
Demonstrating the ability to deliver three high-grade critical minerals from the West Joe resource
further cements Case Lake's position as a world-class asset in
Ontario, Canada
.
Haydn Daxter, CEO of Power Metals commented:
"The recent metallurgical test work confirms Case Lake's ability to produce three high-grade
concentrate minerals – cesium, tantalum and lithium – setting it apart from many other projects in
North America
.
With production targeted for 2026, Case Lake is the fourth largest hard rock cesium resource
globally that we remained focus on advancing within an efficient timeframe to unlock its full
commercial value.
Johnathan More
, Chairman of Power Metals commented:
"I am very pleased with the latest metallurgical test work results from Case Lake. The project
continues to stand out as a leading multi-asset in
Ontario
, with strong potential across all three
minerals.
This latest round of work further strengthens our position as we continue to de-risk and
demonstrate the projects capabilities to deliver the world's fourth hard rock cesium project.
Metallurgical Test Work
The Company is pleased to report positive metallurgical results from Dense Media Separation
(DMS) and Flotation tests on lithium along, with Wet Table (WT) and Magnetic Separation (MS)
tests on tantalum from the Case Lake deposit.
The test work produced lithium (
Li
O
) concentrates with grades as high as
7.70%
, and low
deleterious Iron (Fe
O
) content below 0.66%. Tantalum (Ta) concentrates returned grades as high
as
12,508ppm
(1.25%)
.
The Company engaged 'Nagrom the Mineral Processor' in
Perth
,
Western Australia
to carry out
bench-scale test work on representative material from Case Lake. This program utilised DMS and
Flotation techniques to concentrate spodumene ore, and WT and MS techniques to concentrate
tantalum ore sourced from the West Joe deposit at Case Lake.
The results were subject to an independent review and interpretation by SGS Lakefield, a team with
significant expertise in mineral processing and metallurgy in
Canada
.
The primary objective of this program was to evaluate the effectiveness of conducting DMS and
Flotation on spodumene, along with WT and MS on Tantalum from the waste material produced
during cesium concentrate production.
Samples 24-036-02W and 24-036-03W were produced as final rejects of 2024 phase I ore sorting
testwork that Power Metals completed with Tomra Australia (see press release dated
December 3,
2024
).
Metallurgical results of the DMS and Flotation tests conducted on the West Joe deposit at Case
Lake, produced quality concentrates surpassing the current market standards (5.5% Li
O and <1.2
% Fe
O
). Outstanding results returned included, Li
O grades reaching as high as 7.70%, and low
deleterious Iron (Fe
O
) grades of sub 0.66%.
Wet Table (WT) test results from the West Joe deposit at Case Lake, yielded high-quality Tantalum
concentrates of 12,508ppm (1.25% Ta). These initial results are very encouraging and mark a
successful first step in confirming the deposit's tantalum potential.
Primary samples from the West Joe deposit confirmed Cesium-Tantalum-Lithium mineralization, with
samples 24-036-02W and 24-036-03W containing spodumene, tantalite and pollucite. These
samples have ore-grade lithium and tantalum, and relatively low cesium.
Pollucite was sorted as the primary product during Phase I of the ore sorting process. Sample 24-
036-02W was processed to produce spodumene concentrate through DMS and Flotation,
demonstrating effective lithium recovery. Sample 24-036-03W yielded tantalite concentrate using WT
(gravity) and MS methods, successfully recovering tantalum from the feed sample.
Sample 24-036-02W was stage crushed to 100% passing 5.6 mm and wet screened at 0.71mm
before DMS test was completed at SG 2.75. Two sighter float tests were conducted on a
composite sample that consisted of the product (underflow) of the DMS and the remaining fine
material (-0.71mm) from the wet screen.
Further wet screening at 0.025 mm and magnetic separation were completed before the composite
sample was run through flotation testwork.
The DMS plus Flotation test work produced exceptionally high-grade spodumene concentrate with
7.20% Li
O and recovered 78.8% the lithium (Table 1). Individual sighter float tests showed
recoveries of 80% to 99.7%, producing concentrates with 6.4% to 7.7% Li
O (Figure 3).
Figure 1 (A) – Sample Material at Nagrom, Australia, 24-036-02W, Nominal -12.7mm (A), 24-036-
03W, -12.5/+6mm (B) (CNW Group/Power Metals Corp.)
Figure 1 (B) – Sample Material at Nagrom, Australia, 24-036-02W, Nominal -12.7mm (A), 24-036-
03W, -12.5/+6mm (B) (CNW Group/Power Metals Corp.)
Figure 2 (A) – Metallurgical Test Work at Nagrom, Australia, Floatation (A), Wet Table (B) (CNW
Group/Power Metals Corp.)
Figure 2 (B) – Metallurgical Test Work at Nagrom, Australia, Floatation (A), Wet Table (B) (CNW
Group/Power Metals Corp.)
Figure 3 – Flotation Grade versus Recovery Grade for Sighter Float tests 1 and 2 (CNW
Group/Power Metals Corp.)
The pre-flotation DMS concentrate also produced quality spodumene concentrate with 5.24% Li2O
and recovered 85.8% of the lithium (Table 2). Both the DMS and DMS plus flotation concentrates
have very low iron content at 0.54% and 0.65% Fe2O3. The DMS concentrate contains relatively
high cesium (0.88% Cs2O), indicating potential additional by-product credits for the company.
The lithium and tantalum beneficiation testwork completed on the final reject (waste) samples from
the Companies 2024 Phase I ore sorting successfully demonstrated that the waste products from
pollucite sorting at West Joe are amenable to known spodumene and tantalite processing methods.
The results further validate that the waste products of the pollucite ore sorting process from West
Joe and similar lithium-tantalum plus low-grade cesium mineralized pegmatites at Main Zone can be
processed using a low-cost small scale DMS plant.
Table 1 – Mass Balance for Spodumene Concentrate
Description
Size Range
(mm)
Mass
(%)
Li
2
O
(%)
Fe
2
O
3
(%)
Li
2
O
Distribution
(%)
Final Spodumene Concentrate
-12.7+0.025mm
17.8
7.20
0.65
78.8
Combined Flotation Tails
-0.125+0.025mm
15.5
0.05
0.10
0.4
Slimes
-0.025mm
8.0
3.33
1.56
16.4
Magnetic Concentrate
-0.125+0.025mm
0.87
5.02
0.07
2.7
DMS Tails
-12.7+0.71mm
57.9
0.05
0.07
1.8
24-036-02W (Feed)
-12.7
100.0
1.58
0.24
100.0
Table 2 – Summary Results for Spodumene Concentrate Produced by DMS
Sample
Mass
(%)
Li
2
O
(%)
Cs
2
O
(%)
Fe
2
O
3
(%)
Global Li
2
O Recovery
(%)
DMS Concentrate
26.1
5.24
0.88
0.54
85.82
Sample 24-036-03W was used to produce tantalite concentrate through gravity-based wet table and
magnetic separation tests. The sample was stage-crushed to 100% passing 1mm and wet-screened
at 0.075, 0.125 and 0.5 mm to create four sub-samples for wet table testing.
Following the initial wet table tests, a composite sample was created from the first two cuts of each
sub-sample. This composite then underwent a second round of wet tabling testing, followed by
magnetic separation testwork. The test program successfully produced tantalite concentrate
grading 12,508 ppm (1.25% Ta), with a recovery rate of 45% (see Table 3).
Table 3 – Mass Balance for Tantalite Concentrate
Description
Size Range
(mm)
Mass
(%)
Ta
(ppm)
Ta Distribution
(%)
Combined Ta Concentrate
-0.5mm
0.52
12508
44.8
+0.5mm Ta Concentrate
+0.5mm
0.37
1630
4.2
Combined 2nd Pass Tailings + Slimes
-1mm
14.9
141
14.5
Combined 1st Pass Tailings + Slimes
-1mm
84.3
63
36.5
Feed (24-036-03W)
-1mm
100.0
144
100.0
Case Lake Property
The Case Lake Property is located 80 km east of
Cochrane
in northeastern
Ontario
, near the
Ontario Quebec border. It comprises 586 cell claims across Steele, Case, Scapa, Pliny,
Abbotsford
and Challies townships within the Larder Lake Mining Division. The Property is 10km by 9.5km in
size with 14 granitic domes.
The Case Lake pegmatite swarm consists of six spodumene dykes known as the North, Main,
South, East and Northeast dykes on the Henry Dome, and the West Joe dyke on a new dome,
collectively forming mineralization trend that extends for approximately 10km (Figure 4).
Power Metals has completed several exploration campaigns leading to the discovery and expansion
of new and historic spodumene bearing LCT pegmatites at Case Lake. The Company has drilled a
total of 23,976 meters of core between 2017 and 2024 at the Property. The Case Lake Property is
owned 100% by Power Metals Corp. A National Instrument 43-101 Technical Report has been
prepared on Case Lake Property and filed on
July 18, 2017
(Figure 4).
Decelles Property
The Decelles Property contains 247 claims, covering 14,229 hectares of LCT prospective ground
near the mining centres of Val-dÓr and
Rouyn-Noranda
, approximately 600km from
Montreal
.
Power Metals acquired the Decelles and Mazerac properties from Winsome Resources in 2023 in a
deal that increased Winsome equity stake to 19.59% (refer to press release announced on
August 24, 2023
), the transaction remains subject to TSXV approval. The geology of Decelles
property is part of the Archean Pontiac sub-province where S-type LCT prospective, pegmatite
bearing, granitic Decelles Batholith intrudes into metasedimentary units of the Pontiac Group.
Spodumene and Beryl bearing pegmatites have been reported historically within the
Pontiac
sub-
province in association with S-type garnet-muscovite granite. The Decelles property is adjacent to
Vision Lithium's Cadillac property where discovery of high-grade lithium pegmatites was reported in
2022 (Figure 4).
Mazerac Property
The Mazerac Property is located approximately 30 km east of Power Metals' Decelles property near
well-established mining camps in the Abitibi region of
Canada
and is accessible by network of
mining-grade forestry roads. The Mazerac property contains 115 claims that cover 6,653 hectares
of LCT prospective ground near the mining centre of Val-dÓr and
Rouyn-Noranda
. The regional
geology of Mazerac is similar to Decelles where S-type LCT prospective, pegmatite bearing,
granites of Decelles Batholith intrude into metasedimentary units of the Pontiac Group. Spodumene
and Beryl bearing pegmatites have been reported historically within the
Pontiac
sub-province in
association with S-type garnet-muscovite granite (Figure 4).
Figure 4 – Power Metals Corp Project Locations Map in Ontario and Quebec Canada (CNW
Group/Power Metals Corp.)
Pollucite and Cesium
Pollucite is a rare mineral that hosts high grade cesium and is associated with highly fractionated,
rare element pegmatites. The main source of cesium known globally is pollucite
(Cs,Na)
(Al
Si
O
)•2H
O, (
https://www.gov.mb.ca/iem/geo/industrial/pollucite.html
). Currently the
Tanco mine in
Manitoba, Canada
is the only operating cesium deposit and holds over 60% of the
known reserves globally.
Scientific and Technical Disclosure
The scientific and technical disclosure included in this news release for Metallurgical test work has
been reviewed and approved by
Manan Paul
, M.Sc., P.Eng., Senior Metallurgist at SGS Canada, a
Qualified Person under National Instrument 43-101 Standards of Disclosure of Mineral Projects (NI
43-101) and a member in good standing with Professional Engineers Ontario (100120678).
SGS
Canada
is independent of the Company.
The scientific and technical disclosure included in this news release has been reviewed and
approved by
Amanuel Bein
, M.Sc., P.Geo., Vice President of Exploration for Power Metals, a
Qualified Person under National Instrument 43-101 Standards of Disclosure of Mineral Projects (NI
43-101) and a member in good standing with Association of Professional Geoscientists of
Ontario
(3524).
Power Metals Corp (TSX-V: PWM)
Power Metals Corp (TSX-V: PWM) is a Canadian exploration company focused on developing high-
quality critical mineral projects.
Its flagship Case Lake Property in
Ontario
– 100 per cent owned by Power Metals - is a high-grade
cesium, lithium and tantalum asset, poised to become one of only four cesium mines globally.
Beyond Case Lake, the Company's portfolio includes the Decelles and Mazerac Properties near
Val-
D'Or
, Québec. Together, these assets cover 947 claims spanning more than 330km² of lithium-
cesium-tantalum (LCT) prospective ground.
As global demand for critical minerals continues to grow global, and particularly in
North America
,
Power Metals is strategically advancing its projects to support the continent's growing supply needs.
Learn more at
www.powermetalscorp.com
.
-ON BEHALF OF THE BOARD-
Johnathan More
, Chairman & Director
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in
policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of the
content of this news release.
No- securities regulatory authority has either approved or disapproved of the contents of this news
release. The securities being offered have not been, and will not be, registered under the United
States Securities Act of 1933, as amended (the "U.S. Securities Act"), or any state securities laws,
and may not be offered or sold in
the United States
, or to, or for the account or benefit of, a "U.S.
person" (as defined in Regulation S of the U.S. Securities Act) unless pursuant to an exemption
therefrom. This press release is for information purposes only and does not constitute an offer to
sell or a solicitation of an offer to buy any securities of the Company in any jurisdiction.
Cautionary Note Regarding Forward-Looking Information
This press release contains forward-looking information based on current expectations, including
the use of funds raised under the Offering. These statements should not be read as guarantees of
future performance or results. Such statements involve known and unknown risks, uncertainties
and other factors that may cause actual results, performance or achievements to be materially
different from those implied by such statements. Although such statements are based on
management's reasonable assumptions, Power Metals assumes no responsibility to update or
revise forward-looking information to reflect new events or circumstances unless required by law.
Although the Company believes that the expectations and assumptions on which the forward-
looking statements are based are reasonable, undue reliance should not be placed on the forward-
looking statements because the Company can give no assurance that they will prove to be correct.
Since forward-looking statements address future events and conditions, by their very nature they
involve inherent risks and uncertainties. These statements speak only as of the date of this press
release. Actual results could differ materially from those currently anticipated due to several
factors and risks including various risk factors discussed in the Company's disclosure documents
which can be found under the Company's profile on
www.sedar.com
.
This press release contains "forward-looking statements" within the meaning of Section 27A of the
Securities Act of 1933, as amended, and Section 21E the Securities Exchange Act of 1934, as
amended and such forward-looking statements are made pursuant to the safe harbor provisions of
the Private Securities Litigation Reform Act of 1995. The TSXV has neither reviewed nor approved
the contents of this press release.
SOURCE
Power Metals Corp.
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http://www.newswire.ca/en/releases/archive/July2025/07/c3126.html
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For further information:
Power Metals Corp, Johnathan More, 515-401-7479,
CO: Power Metals Corp.
CNW 08:00e 07-JUL-25