Tomtebo Property Program Targeting Broader Steffenburgs Zone

VANCOUVER - District Metals Corp. reported on the core drilling program at the base metal polymetallic Tomtebo Property located in the Bergslagen Mining District in south-central Sweden. A total of 1,712.5 m in three drill holes has been completed at the Steffenburgs zone within the historic Tomtebo Mine area. Drill targeting was designed to systematically test the broader Steffenburgs zone and its prospective polymetallic mineralized horizon (Rhyolite 1 and Rhyolite 3-4 contact) with aggressive step outs of 150 m at depth in order to identify high-grade sea floor massive sulphide lenses in several directions.

The drill rig has now moved to Kvistaberget, which is an exploration target located 5 km northeast of the historic Tomtebo Mine. A total of 700 to 1,000 m of drilling in two to three holes is planned at Kvistaberget to test a geophysical SkyTEM conductive anomaly associated with historic mineral occurrences where grab rock sampling returned strong grades of copper and zinc. Based on whole rock geochemistry results, the Kvistaberget target area is located along strike from the volcanic massive sulphide (VMS) horizon (Rhyolite 1 and Rhyolite 3-4 contact) at the historic Tomtebo Mine.

Drill hole TOM22-038 (extended from 391.9 to 659.4 m): intersected 18.9 m of disseminated to stringer style pyrite-pyrrhotite-chalcopyrite mineralization from 498.7 to 517.6 m, which correlates well with a large borehole electromagnetic (BHEM) off-hole anomaly detected around 503.0 m.

Drill hole TOM25-044: intersected multiple zones of strongly altered and sulphide mineralized footwall rocks including: 1) 26.0 m of disseminated to stringer style pyrite-pyrrhotite with minor chalcopyrite mineralization from 42.0 to 68.0 m, which is interpreted as footwall mineralization, similar to the Gårdsgruvan zone. 2) 46.0 m of disseminated to stringer style pyrite-pyrrhotite-sphalerite-galena and minor chalcopyrite mineralization from 559.0 to 605.0 m with up to 10% observed sulphides from 561.0 to 577.0 m. A broad off-hole BHEM anomaly was detected around 567.0 m.

Drill hole TOM25-045: intersected multiple zones of strongly altered and mineralized footwall rocks including: 7.85 m of disseminated sphalerite-galena-pyrrhotite-pyrite with abundant gahnite mineralization (680.4 to 688.3 m) which is currently interpreted as the prospective 'mineralized horizon'. Two BHEM anomalies were detected around 585 m (off-hole) and 657-684 m (in-hole).

Garrett Ainsworth, CEO, said, "Deeper drilling at the Steffenburgs zone has revealed that polymetallic sulphide mineralization continues at depth, and importantly, significant in-hole and off-hole borehole electromagnetic (BHEM) conductive anomalies have been identified. We look forward to receiving the drill assay results from Steffenburgs zone in late Q2 2025.

We are very excited to have the drill rig move to the Kvistaberget target area, which has never been previously drilled. Very positive coincident data at Kvistaberget includes the whole rock lithogeochemistry, a conductive SkyTEM anomaly, grab rock samples with up to 2% copper and 8.7% zinc, and numerous mineral occurrences that have never been followed up on."