Exhibit 99.58
FORM
51-102F3
MATERIAL CHANGE REPORT
| Item 1: | Name and Address of Company |
F3
Uranium Corp. (the “Company”)
750-1620 Dickson Avenue
Kelowna, British Columbia
Canada, V1Y 9Y2
| Item 2: | Date of Material Change |
April 15, 2025
| Item 3: | News Release |
A news release announcing the material change was issued on April 15, 2025 through Globe Newswire and a copy was subsequently filed on SEDAR+.
| Item 4: | Summary of Material Change |
On April 15, 2025, the Company announced a new discovery with drillhole PLN25-205 which intersected radioactivity over a total of 33.0m including 0.56m of high radioactivity (>10,000 cps) with a peak of 37,700 cps at 398.34m. The drillhole is still currently in progress, however additional mineralization is not expected.
| Item 5.1: | Full Description of Material Change |
On April 15, 2025, the Company announced a new discovery with drillhole PLN25-205 which intersected radioactivity over a total of 33.0m including 0.56m of high radioactivity (>10,000 cps) with a peak of 37,700 cps at 398.34m. The drillhole is still currently in progress, however additional mineralization is not expected.
2025 Handheld Spectrometer Highlights:
Broach
Lake: PW Area
PLN25-205 (line 11310S):
| ● | 0.5m interval with radioactivity of 340 cps between 340.0 and 340.5m, and |
| ● | 0.5m interval with radioactivity of 440 cps between 347.5 and 348.0m, and |
| ● | 0.5m interval with radioactivity of 370 cps between 366.0 and 366.5m, and |
| ● | 8.0m interval with radioactivity peaking 2,500 cps between 373.0m and 381.0m, and |
| ● | 23.5m interval with radioactivity peaking 37,700 cps between 384.0m and 407.5m, including |
| ● | 0.56m composite mineralization >10,000 cps between 389.75m and 398.56m |
Table 1. Drill Hole Summary and Handheld Spectrometer Results
| Collar Information *Planned Collar, azi/dip. Final surveys outstanding | *
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 | Elevation | Az | Dip | From
(m) |
To
(m) |
Interval
(m) |
Max
CPS |
|||
| PLN25-203 | lost in overburden | ||||||||||||
| PLN25-203A | lost in overburden | ||||||||||||
| PLN25-203B | 11340S | 589233 | 6397845 | 586 | 48 | -63 | 160.00 | 160.50 | 0.50 | 420 | 160.7 | 722 | |
| PLN25-204 | 11295S | 589389 | 6398003 | 583 | 47 | -63 | 168.50 | 168.90 | 0.40 | 310 | 168.88 | 401 | |
| PLN25-205* | 11310S | 589326 | 6397940 | 586 | 46 | -65 | 340.00 | 340.50 | 0.50 | 340 | 168.8 | TBD | |
| 347.50 | 348.00 | 0.50 | 440 | ||||||||||
| 366.00 | 366.50 | 0.50 | 370 | ||||||||||
| 373.00 | 373.50 | 0.50 | 470 | ||||||||||
| 373.50 | 374.00 | 0.50 | 370 | ||||||||||
| 374.00 | 374.50 | 0.50 | <300 | ||||||||||
| 374.50 | 375.00 | 0.50 | 540 | ||||||||||
| 375.00 | 377.00 | 2.00 | <300 | ||||||||||
| 377.00 | 377.50 | 0.50 | 510 | ||||||||||
| 377.50 | 378.00 | 0.50 | 780 | ||||||||||
| 378.00 | 378.50 | 0.50 | 2100 | ||||||||||
| 378.50 | 379.00 | 0.50 | 2500 | ||||||||||
| 379.00 | 379.50 | 0.50 | 660 | ||||||||||
| 379.50 | 380.00 | 0.50 | 2400 | ||||||||||
| 380.00 | 380.50 | 0.50 | 1400 | ||||||||||
| 380.50 | 381.00 | 0.50 | 2100 | ||||||||||
| 384.00 | 384.50 | 0.50 | 800 | ||||||||||
| 384.50 | 385.00 | 0.50 | 770 | ||||||||||
| 385.00 | 386.50 | 1.50 | <300 | ||||||||||
| 386.50 | 387.00 | 0.50 | 1900 | ||||||||||
| 387.00 | 387.50 | 0.50 | 3100 | ||||||||||
| 387.50 | 388.00 | 0.50 | 2800 | ||||||||||
| 388.00 | 388.50 | 0.50 | 1600 | ||||||||||
| Collar Information *Planned Collar, azi/dip. Final surveys outstanding | *
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 | Elevation | Az | Dip | From
(m) |
To
(m) |
Interval
(m) |
Max
CPS | ||
| 388.50 | 389.00 | 0.50 | 340 | |||||||||
| 389.00 | 389.50 | 0.50 | 990 | |||||||||
| 389.50 | 389.75 | 0.25 | 9300 | |||||||||
| 389.75 | 390.00 | 0.25 | 27200 | |||||||||
| 390.00 | 390.50 | 0.50 | 1700 | |||||||||
| 390.50 | 391.00 | 0.50 | 480 | |||||||||
| 391.00 | 391.50 | 0.50 | 900 | |||||||||
| 391.50 | 392.00 | 0.50 | 670 | |||||||||
| 392.00 | 392.50 | 0.50 | 1300 | |||||||||
| 392.50 | 393.00 | 0.50 | 4400 | |||||||||
| 393.00 | 393.50 | 0.50 | 590 | |||||||||
| 393.50 | 394.00 | 0.50 | 380 | |||||||||
| 394.00 | 394.50 | 0.50 | 640 | |||||||||
| 394.50 | 395.00 | 0.50 | 420 | |||||||||
| 395.00 | 395.50 | 0.50 | 420 | |||||||||
| 395.50 | 396.00 | 0.50 | 640 | |||||||||
| 396.00 | 396.50 | 0.50 | 1400 | |||||||||
| 396.50 | 397.00 | 0.50 | 940 | |||||||||
| 397.00 | 397.50 | 0.50 | <300 | |||||||||
| 397.50 | 398.00 | 0.50 | 300 | |||||||||
| 398.00 | 398.34 | 0.34 | 9800 | |||||||||
| 398.34 | 398.50 | 0.16 | 37700 | |||||||||
| 398.50 | 398.65 | 0.15 | 10400 | |||||||||
| 398.65 | 399.00 | 0.35 | 8900 | |||||||||
| 399.00 | 399.50 | 0.50 | 4600 | |||||||||
| 399.50 | 400.00 | 0.50 | 760 | |||||||||
| 400.00 | 400.50 | 0.50 | 330 | |||||||||
| 400.50 | 401.00 | 0.50 | 360 | |||||||||
| 401.00 | 401.50 | 0.50 | 910 | |||||||||
| 401.50 | 402.00 | 0.50 | 1900 | |||||||||
| 402.00 | 402.50 | 0.50 | 3400 | |||||||||
| Collar Information *Planned Collar, azi/dip. Final surveys outstanding | *
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 | Elevation | Az | Dip | From
(m) |
To
(m) |
Interval
(m) |
Max
CPS | ||
| 402.50 | 403.00 | 0.50 | 1900 | |||||||||
| 403.00 | 403.50 | 0.50 | 1300 | |||||||||
| 403.50 | 404.00 | 0.50 | 360 | |||||||||
| 404.00 | 404.50 | 0.50 | 6200 | |||||||||
| 404.50 | 405.00 | 0.50 | 700 | |||||||||
| 405.00 | 405.50 | 0.50 | 4900 | |||||||||
| 405.50 | 406.00 | 0.50 | 2200 | |||||||||
| 406.00 | 406.50 | 0.50 | 2300 | |||||||||
| 406.50 | 407.00 | 0.50 | 1200 | |||||||||
| 407.00 | 407.50 | 0.50 | 430 | |||||||||
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 |
The natural gamma radiation detected in the drill core, as detailed in the 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 parlance; this colloquial usage stems from historical naming conventions and the shared functionality of detecting gamma radiation a scintillometer)—as “anomalous”, readings above 10,000 cps as “highly radioactive”, 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 % U3O8 as “high grade” and results greater than 20.0 weight % U3O8 as “ultra-high grade”.
All depth measurements reported are down-hole and true thicknesses are yet to be determined.
| Item 5.2: | Disclosure of Restructuring Transactions |
Not applicable.
| Item 6: | Reliance on subsection 7.1(2) of National Instrument 51-102 |
Not applicable.
| Item 7: | Omitted Information |
Not applicable.
| Item 8: | Executive Officer |
The following senior officer of the Company is knowledgeable about the material change and this report:
Raymond
Ashley, P.Geo., President & COO
Email: ir@f3uranium.com
Phone: 778-484-8030
| Item 9: | Date of Report |
April 25, 2025
Cautionary Note Regarding Forward-Looking Statements
This material change report 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 material change report 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.