Blue Star's Target Series: Flood Zone Deposit Deepest High-Grade Mineralization is Open Along Plunge; Potential Controls Defined

3 April 2025

Vancouver, British Columbia--(Newsfile Corp. - April 3, 2025) - Blue Star Gold Corp. (TSXV: BAU) (OTCQB: BAUFF) (FSE: 5WP0) ("Blue Star" or the "Company"), a leading explorer in Canada's North, announces significant advances in the understanding of its flagship Flood Zone deposit, located in the West Kitikmeot Region of Nunavut. Strong potential exists for expansion of the deposit down plunge of existing deep high-grade gold intercepts.

Flood Zone Deep Highlights

  • Deep high-grade gold intercepts with no follow-up drilling include 12.74 g/t Au over 1.68 metres and 12.18 g/t Au over 0.6 metres in 91VD105 at ~950 metres depth and 14.67 g/t over 7.85 metres in 90VD75 at ~590 metres depth.
  • New structural model indicates that veins at the northwest end of the mineralization rotate towards the south, away from the southeast trend of the known system.
  • The key A1-basalt — sedimentary rock contact may be offset at depth and can be targeted where this contact intersects the projected vein system.
  • Significant potential for resource expansion exists down-plunge.

"Based on our recent studies there are several new areas to target within the Flood Zone," said Grant Ewing, CEO of Blue Star. "The deep Flood Zone targets are some of the most interesting because the mineralization has never been drilled at depth along plunge. Now that we understand how the structures and mineralization are behaving at depth, the follow-up drilling to expand the resource can be planned with more confidence."

Discussion of the Flood Zone
The Flood Zone deposit is an anastomosing trend of gold and acicular arsenopyrite in quartz veins and silicified high-iron, high-titanium mafic volcanic rock which follows the trace of a steeply southwest dipping, southeast trending structure that crosscuts the stratigraphy of the western limb of the Ulu Fold. It has characteristics of a mesozonal orogenic gold system with both brittle and ductile textures, including silicification and quartz 'flooding' surrounding mineralized brecciated mafic volcanic rocks, and ductile deformation and folding of the mineralized zone. The mineralization is steeply dipping parallel with the main southeast fault. Alteration halos up to 20 metres wide envelop mineralization and consist of silicification and potassium enrichment, defined by a calc-silicate mineral assemblage. The Flood Zone is ~450 metres long and has been drilled to ~1,000 metres depth. It remains open along plunge and down dip.

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