F4 and UraniumX Hit Anomalous Radioactivity in 300 m Step Out Holes Third and Fourth Holes Extend Mineralized Corridor 300 m Along Strike
F4 and UraniumX Hit Anomalous Radioactivity
in 300 m Step Out Holes
Third and Fourth Holes Extend Mineralized Corridor 300 m
Along Strike
Kelowna, British Columbia--(Newsfile Corp. - June 9, 2026) -
F4 Uranium Corp
(TSXV: FFU)
("
F4
" or
"
the Company
") is pleased to announce additional drill results from the third and fourth drillholes of the
ongoing Murphy Lake drill program in the Athabasca Basin, Saskatchewan, with
both holes
intersecting anomalous radioactivity.
Drillhole ML26-017 and ML26-018 were both drilled in Target Area 2 (see Figure 1) over
300m along
strike
from the previously released drillholes (see NR dated June 2, 2026). Drillhole ML26-017
encountered a 0.5 m interval of
anomalous radioactivity up to 460 cps
above an approximately
13m
wide graphitic and sulphide rich deformation zone
within the basement rocks. Drillhole ML26-018
intersected the same
graphitic and sulphide bearing deformation zone
as well as
anomalous
radioactivity up to 350 cps
up-dip of the previous hole.
The approximately
2,500-metre drill program
has now completed four drill holes to date. The drill holes
have all been completed on the northern trend portion of the property in "Target Area 1 and 2" (See
Figure 1), following up on historic hole ML22-012 which intersected 56 ppm U in sandstone immediately
above the unconformity.
F4 is the operator of the program, which is being fully funded by UraniumX Discovery Corp. pursuant to
the option agreement under which UraniumX can earn up to a 70% interest (see news release dated July
29, 2025).
Current Drilling Highlights: ML26-017 and ML26-018 (L990N)
Anomalous Radioactivity:
ML26-017
Handheld scintillometer readings >300 cps over 0.5 m (386.0 - 386.5 m), with a peak of 460 cps.
Corresponding anomalous downhole gamma readings >500 cps over 0.4 m (385.2 - 385.6 m)
peaking at 2,217 cps (Figure 2).
ML26-018
Handheld scintillometer readings >300 cps over 0.5 m (347.0 - 347.5 m), with a peak of 350 cps.
Corresponding anomalous downhole gamma readings >500 cps over 6.6 m (343.4 - 350 m)
peaking at 1,097.5 cps (Figure 2).
Large Graphitic Deformation Zone:
Large shear zone with brittle and mylonitic fabrics intersected in both ML26-017 and ML26-018.
Strong graphite and sulphide presence throughout the zone as well as intermittent zones of silica
alteration.
Approximately 13.2 m deformation zone (401.6 - 414.8 m) intersected in hole ML26-017 and a
10.3 m deformation zone (355.8 - 366.1 m) in hole ML26-018, which was drilled up-dip of ML26-
017 (Figure 2).
The strongly graphitic, sulphide-bearing shear zone intersected in both holes is the style of
conductive structure imaged by electromagnetic surveys, supporting the MLEM survey's
interpretation of the conductive trend along this corridor (Figure 2).
Intense Alteration
Intense hydrothermal alteration in the Athabasca Sandstone including strong bleaching and clay
alteration immediately above the unconformity as well as patchy limonite alteration.
Drilling is now planned to advance to Target Area 4 to test along strike of the mineralized conductor
system where ML22-006 was drilled in 2022. The hole will test for the northern extension of the system
by targeting a conductor target as identified by the recent partner-funded Moving Loop Electromagnetic
(MLEM) survey (see news release dated May 5, 2026).
Erik Sehn, P.Geo, VP Exploration, commented:
"Building on the visual identified pitchblende in the first hole of the program, the results from holes ML26-
017 and ML26-018 are equally encouraging, displaying anomalous radioactivity alongside a substantial
graphitic and sulphide-rich structural zone located more than 300 metres along strike from our earlier
holes (see news release June 2, 2026). Intersecting these same key ingredients-structure, alteration,
and radioactivity-over such a distance, strengthens our interpretation of a robust, fertile system at Murphy
Lake. Importantly, these holes have helped define what we are calling the Murphy Lake North trend, a
corridor that remains highly prospective and a likely focus of our next exploration program. With
continuity along this trend now demonstrated, the program will step to the south to Target Area 4 to test
its northern extension, while Target Area 2 remains an attractive target for follow-up at the unconformity,
and along strike. We look forward to assay results from these holes and to testing the next priority
targets."
Table 1. Drill Hole Summary and Handheld Spectrometer Results
Collar Information
* Hand-held Spectrometer Results On
Mineralized Drillcore (>300 cps / >0.5m
minimum)
Athabasca
Unconformity
Depth (m)
Total
Drillhole
Depth (m)
Hole ID
Section
Line
Easting
Northing
Elev.
Azi
Dip
From
(m)
To
(m)
Interval
(m)
Max
CPS
ML26-017
990N
547028
6493207
428
295
-73
386.00
386.50
0.50
460
320.0
470
ML26-018
990N
547028
6493207
428
292
-68
347.00
347.50
0.50
350
332.3
416
Handheld spectrometer composite parameters:
1: Minimum Thickness of 0.5 m
2: CPS Cut-Off of 300 counts per second
3: Maximum Internal Dilution of 2.0 m
Figure 1. Murphy Lake 2026 Drill Program.
To view an enhanced version of this graphic, please visit:
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Figure 2. Line 990N Cross Section
To view an enhanced version of this graphic, please visit:
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The natural gamma radiation detected in the drill core, as detailed in this news release, was measured
in counts per second (cps) using a handheld Radiation Solutions RS-125 spectrometer which has been
calibrated by Radiation Solutions Inc. The Company designates readings exceeding 300 cps on the
handheld spectrometer (occasionally referred to as a scintillometer in industry terminology; this stems
from historical naming conventions and the shared functionality of detecting gamma radiation between a
spectrometer and a scintillometer)-as "anomalous", readings above 10,000 cps as "highly radioactive",
and readings surpassing 65,535 cps as "off-scale". The Company may also report radioactivity as
measured with a downhole QL-40GR gamma probe from Mount Sopris. The Company designates
readings exceeding 500 cps on the downhole gamma probe as "anomalous".
Readers are cautioned that handheld spectrometer (scintillometer) and downhole gamma probe
readings are preliminary in nature, are not directly or consistently correlated to uranium grades
determined by chemical assay, and should not be relied upon as a substitute for analytical results. All
radiometric readings are subject to confirmation by laboratory assay.
Samples from the drill core are split into half sections on site. Where possible, samples are
standardized at 0.5 m downhole intervals. One-half of the split sample is sent to SRC Geoanalytical
Laboratories (an SCC ISO/IEC 17025: 2005 Accredited Facility) in Saskatoon, SK while the other half
remains on site for reference. Analysis includes a 63 element suite including boron by ICP-OES, uranium
by ICP-MS and gold analysis by ICP-OES and/or AAS.
The Company considers uranium mineralization with assay results of greater than 1.0 weight % U
₃
O
₈
as
"high grade" and results greater than 20.0 weight % U
₃
O
₈
as "ultra-high grade".
All depth measurements reported are downhole and true thicknesses are yet to be determined.
About Murphy Lake:
F4's 609-hectare Murphy Lake Property is located in the north-eastern corner of the Athabasca Basin,
30 km northwest of Orano's McLean Lake deposits, 5 km south of ISOEnergy's Hurricane Uranium
Deposit and 4 km east of Cameco's La Rocque Lake Uranium Zone where drill hole Q22-040
intersected 29.9% U
₃
O
₈
over 7.0 m. The 2022 maiden drill program at the Murphy Lake Property
consisted of 14 completed drillholes totaling 6,850 m; drill hole ML22-006 intersected 0.065% U
₃
O
₈
over 2.5 m from 322.5 m to 325.0 m, including 0.242% U
₃
O
₈
over 0.5 m.
Qualified Person
The technical information in this news release has been reviewed and approved on behalf of the
Company by Sam Hartmann, P.Geo., President & Chief Operating Officer of F4, and a qualified person
as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Projects.
This news release also refers to neighboring properties in which F4 Uranium has no interest, and the
Qualified Person has been unable to verify the information from those properties. Mineralization on those
neighboring properties is not necessarily indicative of mineralization on the Murphy Lake Property.
For additional information on the Murphy Lake Property, please refer to the National Instrument 43-101
Report titled "Technical Report For The Murphy Lake Project, NE Athabasca Basin, Saskatchewan,
Canada" effective March 20, 2024, available at
www.sedarplus.ca
.
About F4 Uranium Corp:
F4 Uranium is a Canadian uranium exploration company focused on the Athabasca Basin in northern
Saskatchewan, led by the management and exploration team behind multiple uranium discoveries in the
Basin, including most recently Patterson Lake North and Broach Lake. The project portfolio comprises
16 wholly owned properties totaling approximately 157,000 hectares, several of which sit near
established uranium deposits including Paladin's Triple R, NexGen Energy's Arrow and IsoEnergy's
Hurricane. The assets were spun out of F3 Uranium in 2024. F4's exploration program is split between
the west and east sides of the Athabasca Basin, with the Company operating as both an explorer and
project generator providing investors early-stage exposure to the Basin.
Contact Information
F4 Uranium Corp.
750-1620 Dickson Avenue
Kelowna, BC V1Y 9Y2
Investor Relations
Telephone: 778 484 8030
Email:
ON BEHALF OF THE BOARD,
"Ray Ashley"
Raymond Ashley, CEO
F4 Uranium Corp.
Forward-Looking Statements
This news release contains certain forward-looking statements within the meaning of applicable
securities laws. All statements that are not historical facts, including without limitation, statements
regarding future estimates, plans, programs, forecasts, projections, objectives, assumptions,
expectations or beliefs of future performance, including statements regarding the suitability of the
Properties for mining exploration, future payments, issuance of shares and work commitment funds
under the existing option agreement, and completion of the planned exploration program, are "forward-
looking statements". These forward-looking statements reflect the expectations or beliefs of
management of the Company based on information currently available to it. Forward-looking statements
are subject to a number of risks and uncertainties, including those detailed from time to time in filings
made by the Company with securities regulatory authorities, which may cause actual outcomes to differ
materially from those discussed in the forward-looking statements. These factors should be considered
carefully and readers are cautioned not to place undue reliance on such forward-looking statements. The
forward-looking statements and information contained in this news release are made as of the date
hereof and the Company undertakes no obligation to update publicly or revise any forward-looking
statements or information, whether as a result of new information, future events or otherwise, unless so
required by applicable securities laws.
The TSX Venture Exchange has not reviewed, approved or disapproved the contents of this press
release, and does not accept responsibility for the adequacy or accuracy of this release.
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