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F3 Hits Anomalous Radioactivity 12km South of JR Zone on Broach Property 20.0m Composite Mineralization at JR Zone with 2.25m high grade Radioactivity

Exploration Programs

F3 Hits Anomalous Radioactivity 12km South

of JR Zone on Broach Property

20.0m Composite Mineralization at JR Zone with 2.25m high

grade Radioactivity

Kelowna, British Columbia--(Newsfile Corp. - March 18, 2025) -

F3 Uranium Corp

(TSXV: FUU)

(OTCQB: FUUFF)

("

F3

" or "

the Company

") is pleased to release initial scintillometer results from the

ongoing winter drill programs at the PLN and Broach Properties including drilling at JR Zone, B1, and

the PW Area. At Broach Lake a new prospective area "PW" is emerging, where exploration drillhole

PLN25-202 encountered six distinct zones of anomalous radioactivity, with readings ranging between

300 cps and 720 cps over a 90m downhole interval. At JR Zone, PLN25-200 returned mineralization

over 20.0m, including

2.25m of high grade

(>10,000 cps) containing

0.68m of off-scale

mineralization (>65,535 cps)

.

2025 Handheld Spectrometer Highlights:

PLN: JR Zone

PLN25-198 (line 090S):

6.5m

interval with mineralization between 214.5 and 223.0m, including

0.20m high-grade radioactivity (> 10,000 cps)

between 220.65 and 220.85m, and

1.5m

interval with mineralization between 228.5 and 230.0m

PLN25-200 (line 045S):

1.0m

interval with mineralization between 229.0 and 230.0m, and

19.0m

interval with mineralization between 233.0 and 252.0m, including

2.25m high-grade composite radioactivity (> 10,000 cps)

between 236.0 and 238.75m

Broach Lake: PW Area

PLN25-202 (line 11325S):

0.5m

interval with radioactivity between 272.5 and 273.0m, and

0.5m

interval with radioactivity between 275.5 and 276.0m, and

0.5m

interval with radioactivity between 296.0 and 296.5m, and

0.5m

interval with radioactivity between 321.0 and 321.5m, and

0.5m

interval with radioactivity between 359.5 and 360.0m, and

0.5m

interval with radioactivity between 362.5 and 363.0m

B1 Conductor:

PLN25-196 (line 2835S):

0.5m

interval with radioactivity between 336.5 and 367.0m

Sam Hartmann, Vice President Exploration, commented:

"The 'PW' area, situated on the Broach Property approximately 12 kilometers south of the JR Zone, lies

just within the Athabasca Basin and represents a region with minimal historical exploration and drilling

activity. No previously defined conductors had been identified in this area, largely due to the presence of

a thick layer of conductive Cretaceous mudstone from the Manville Group, which locally reaches

thicknesses of nearly 100 meters. Recognizing the potential of this challenging but underexplored region,

we conducted a specifically designed MLTDEM ground survey (see NR February 11) which has just

been completed by Abitibi Geophysics. This approach successfully delineated a number of basement-

hosted conductors on the survey lines interpreted so far with lines L3200N to L4400N still outstanding

(see Map 2), overcoming the interference posed by the conductive mudstones. Drillhole PLN25-202 was

collared based on an initial interpretation and conductor model on L1600N, and intersected strongly

altered basement lithologies, encountering six distinct radioactive intercepts across a 90-meter

downhole interval. Data from this drillhole was subsequently re-integrated back into the electromagnetic

(EM) model - which resulted in a lateral shift of the conductor model by approximately 100 meters. This

adjustment suggests that PLN25-202 overshot the intended target yet - still encountered significant

alteration and structures along with radioactivity. A follow-up drillhole is scheduled and planned to step

back by approximately 100 meters to better intersect the refined target, which lies in a distinct circular

gravity anomaly. While the PW Area is still in its early stages of exploration, we are highly encouraged by

these strong initial results, and intend to conduct further drilling in the area before shifting focus back to

the JR Zone toward the conclusion of the winter season."

Map 1. Patterson Lake North - JR Zone 2025 Scintillometer Results

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8110/244920_f088d21f648b2b38_002full.jpg

Map 2. Broach Lake - PW Area 2025 Scintillometer Results

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8110/244920_f088d21f648b2b38_003full.jpg

Table 1. Drill Hole Summary and Handheld Spectrometer Results

Collar Information

* Hand-held Spectrometer Results On

Mineralized Drillcore (>300 cps / >0.5m

minimum)

Hole ID

Section

Line

Easting

Northing

Elevation

Az

Dip

From

(m)

To

(m)

Interval

(m)

Max CPS

Athabasca

Unconformity

Depth (m)

Total

Drillhole

Depth (m)

PLN25-

196

2835S

589265.0

6408368.2

537.9

54.1

-67.3

366.50

367.00

0.50

390

178.4

497

PLN25-

197

030S

587776.2

6410760.2

546.4

55.1

-70.7

206.50

207.00

0.50

880

189.7

251

207.00

207.50

0.50

7,600

207.50

208.00

0.50

9,700

208.00

208.50

0.50

5,100

208.50

209.00

0.50

510

209.00

209.50

0.50

360

209.50

210.00

0.50

390

210.00

210.50

0.50

350

210.50

211.00

0.50

530

211.00

211.50

0.50

1,100

PLN25-

198

090S

587842.9

6410645.2

546.0

9.4

-64.9

214.50

215.00

0.50

330

191.7

299

215.00

215.50

0.50

460

215.50

217.50

2.00

<300

217.50

218.00

0.50

3,400

218.00

218.50

0.50

2,200

218.50

219.00

0.50

330

219.00

219.50

0.50

340

219.50

220.00

0.50

570

220.00

220.50

0.50

450

220.50

220.65

0.15

8,600

220.65

220.85

0.20

22,100

220.85

221.00

0.15

7,700

221.00

221.50

0.50

8,100

221.50

222.00

0.50

2,500

222.00

222.50

0.50

4,900

222.50

223.00

0.50

2,200

228.50

229.00

0.50

310

229.00

229.50

0.50

<300

229.50

230.00

0.50

450

PLN25-

199

010N

587693.2

6410748.1

545.2

54.9

-65.7

232.00

232.50

0.50

360

197.7

269

242.00

242.50

0.50

1,000

242.50

243.00

0.50

2,900

243.00

243.50

0.50

1,100

PLN25-

200

045S

587730.9

6410712.4

545.2

53.4

-65.5

229.00

229.50

0.50

330

229.50

230.00

0.50

360

233.00

233.50

0.50

660

233.50

234.00

0.50

720

234.00

234.50

0.50

1,900

234.50

235.00

0.50

4,900

235.00

235.50

0.50

660

235.50

236.00

0.50

9,600

236.00

236.50

0.50

62,200

236.50

237.00

0.50

13,400

237.00

237.50

0.50

9,200

237.50

237.65

0.15

58,200

237.65

238.00

0.35

>65,535

238.00

238.33

0.33

>65,535

238.33

238.50

0.17

61,000

238.50

238.75

0.25

22,300

238.75

239.00

0.25

8,600

239.00

239.50

0.50

8,400

239.50

240.00

0.50

2,800

240.00

240.50

0.50

5,700

240.50

241.00

0.50

3,000

241.00

241.50

0.50

5,400

241.50

242.00

0.50

5,200

242.00

242.50

0.50

5,100

242.50

243.00

0.50

470

243.00

244.00

1.00

<300

244.00

244.50

0.50

320

244.50

246.50

2.00

<300

246.50

247.00

0.50

2,100

247.00

247.50

0.50

740

247.50

248.00

0.50

1,100

248.00

248.50

0.50

480

248.50

249.00

0.50

<300

249.00

249.50

0.50

330

249.50

250.00

0.50

740

250.00

251.00

1.00

<300

251.00

251.50

0.50

1,300

251.50

252.00

0.50

2,100

PLN25-

201

12510S

590064.4

6397263.8

568.9

45.9

-70.2

PW Exploration; no radioactivity >300 cps

n.a.

437

PLN25-

202

11325S

589352.6

6397967.0

583.2

45.9

-63.3

272.50

273.00

0.50

330

171.6

464.5

275.50

276.00

0.50

300

296.00

296.50

0.50

330

321.00

321.50

0.50

320

359.50

360.00

0.50

320

362.50

363.00

0.50

720

Collar Information

* Hand-held Spectrometer Results On

Mineralized Drillcore (>300 cps / >0.5m

minimum)

Handheld spectrometer composite parameters:

1: Minimum Thickness of 0.5m

2: CPS Cut-Off of 300 counts per second

3: Maximum Internal Dilution of 2.

0m

Image 1: Anomalous Radioactivity in PLN25-202

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/8110/244920_f088d21f648b2b38_004full.jpg

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. The Company

designates readings exceeding 300 cps on the handheld spectrometer (occasionally referred to as a

scintillometer in industry parlance; this colloquial usage stems from historical naming conventions and

the shared functionality of detecting gamma radiation with a scintillometer)—as "anomalous", readings

above 10,000 cps as "high-grade", and readings surpassing 65,535 cps as "off-scale". However,

readers are cautioned that spectrometer or scintillometer measurements often do not directly or

consistently correlate with the uranium grades of the rock samples and should be regarded solely as a

preliminary indicator of the presence of radioactive materials.

Samples from the drill core are split into half sections on site. Where possible, samples are

standardized at 0.5m down-hole 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 down-hole and true thicknesses are yet to be determined.

About the Patterson Lake North Project:

The Company's 42,961-hectare 100% owned Patterson Lake North Project (PLN) is located just within

the south-western edge of the Athabasca Basin in proximity to Paladin's Triple R and NexGen Energy's

Arrow high-grade uranium deposits, an area poised to become the next major area of development for

new uranium operations in northern Saskatchewan. The PLN Project consists of the 4,074-hectare

Patterson Lake North Property, the 19,864-hectare Minto Property, and the 19,022-hectare Broach

Property. All three properties comprising the PLN Project are accessed by Provincial Highway 955; the

new JR Zone uranium discovery on the PLN property is located 23km northwest of Paladin's Triple R

deposit.

Qualified Person:

The technical information in this news release has been prepared in accordance with the Canadian

regulatory requirements set out in National Instrument 43-101 and approved on behalf of the company by

Raymond Ashley, P.Geo., President & COO of F3 Uranium Corp, a Qualified Person. Mr. Ashley has

verified the data disclosed.

About F3 Uranium Corp.:

F3 Uranium is a uranium exploration company, focusing on the recently discovered high-grade JR Zone

on its Patterson Lake North (PLN) Project in the Western Athabasca Basin. F3 Uranium currently has 3

properties in the Athabasca Basin: Patterson Lake North, Minto, and Broach

.

The western side of the

Athabasca Basin, Saskatchewan, is home to some of the world's largest high grade uranium deposits

including Paladin's Triple R and Nexgen's Arrow.

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,

entry into of a definitive option agreement respecting the Properties, 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 and the Canadian Securities Exchange have not reviewed, approved or

disapproved the contents of this press release, and do not accept responsibility for the adequacy or

accuracy of this release.

F3 Uranium Corp.

750-1620 Dickson Avenue

Kelowna, BC V1Y9Y2

Contact Information

Investor Relations

Telephone: 778 484 8030

Email:

[email protected]

ON BEHALF OF THE BOARD

"Dev Randhawa"

Dev Randhawa, CEO

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/244920