North American Niobium Intersects 211+ Metres of Cumulative Pegmatite with Encouraging Nb-REE Exploration Indicators at Seigneurie; Assays Pending

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[{"type":"text","content":"  Includes a continuous 105.45-metre central pegmatite interval; laboratory assays and mineralogical confirmation pending Vancouver, British Columbia, April 29, 2026 (GLOBE NEWSWIRE) -- North American Niobium and Critical Minerals Corp. (CSE: NIOB) (FSE: KS82.F) (OTCQB: NIOMF) (NIOB or the Company) has drilled a pegmatite intersection that ranks 4th among the widest pegmatite drillhole intersections ever publicly disclosed (see Tables 1 and 2) , at its Seigneurie project in Québec. SGN 2026-007 intersected 211.25 metres of cumulative pegmatite, anchored by a continuous 105.45-metre core interval that displayed elevated radiometric response and qualitative Portable XRF (pXRF) indicators that the Company considers encouraging for potential niobium (Nb) and rare earth element-bearing (REE) minerals. Laboratory assays are currently pending. These early results support continued geological modelling and follow-up work to assess the geometry and continuity of the pegmatite system at depth. Highlights Widest single pegmatite intercept reported to date at Seigneurie: continuous 105.45-metre main interval from 63.85 to 169.3 metres within 211.25 metres of cumulative pegmatite in drill hole SGN-2026-007 (see Figure 1) Sustained elevated gamma-ray spectrometer response across the main pegmatite is considered by the Company to be an encouraging qualitative exploration indicator for potential REE and Nb mineralization Light-brown mineral in direct association with magnetite returned elevated niobium, yttrium and phosphorus on portable XRF screening (indicative only; see pXRF disclosure below and Figure 3) Core alteration and mineralogy appear more pronounced than at surface—smoky-quartz and titanium (Ti)-magnetite content exceeds what was documented in the Channel 2 outcrop, the best surface channel-sample interval at Seigneurie to date. The Company believes that this suggests the hole is testing a more developed part of the pegmatite system Quartz and magnetite are spatially associated with Nb-REE-bearing phases—a priority observation for laboratory petrography, as confirmation of this association would strengthen the case for a magnetite-hosted Nb-REE target The next step will be to do petrography and mineralogy on selected intervals, including the main 105.45-metre interval and the light-brown mineral associated with magnetite, to co...

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