F3 Uranium Corp (TSXV: FUU) (OTCQB: FUUFF) (“F3” or “the Company“) is pleased to announce the assay results of Tetra Zone Discovery Hole PLN25-205 which returned a 1.0m high grade interval with 2.50% U3O8 within a 22.5m mineralized main interval averaging 0.26% U3O8 from 384.5m to 407.0m. A secondary mineralized zone above the main zone averaged 0.125% U3O8 over 3.5m from 377.5m to 381.0m.
Strong radioactivity in discovery hole PLN25-205 was first announced on April 15, 2025, on the Broach Lake Property, part of F3’s PLN Project. Drilling on the Tetra Zone is ongoing with one diamond drill and one sonic drill.
Tetra Zone Discovery Assay Highlights:
PLN25-205 (line 11310S):
- 0.5m @ 0.056% U3O8 (373.0m to 373.5m), and
- 3.5m @ 0.125% U3O8 (377.5m to 381.0m), and
- 22.5m @ 0.26% U3O8 (384.5m to 407.0m), including
- 0.5m @ 1.25% U3O8 (389.5m to 390.0m), and
- 1.0m @ 2.50% U3O8 (398.0m to 399.0m)
Map 1. Tetra Zone I Assay Results PLN25-205
Table 1. Drill Hole Summary and Uranium Assay Results
| Collar Information | Assay Results |
|||||||||
Hole ID |
Grid Line |
Easting | Northing | Elevation | Az | Dip | From (m) |
To (m) |
Interval (m) |
U3O8 weight % |
| PLN25-205 | 11310S | 589327 | 6397941 | 583 | 46 | -65 | 377.50 | 381.00 | 3.50 | 0.13 |
| 384.50 | 407.00 | 22.50 | 0.26 | |||||||
| incl. | 389.50 | 390.00 | 0.50 | 1.23 | ||||||
| also incl. | 398.00 | 399.00 | 1.00 | 2.50 | ||||||
| further incl. | 398.00 | 398.50 | 0.50 | 3.85 | ||||||
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.
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