Calibre Intercepts High-Grade Gold & Silver Mineralization from Several Targets at its Eastern Borosi Mine Complex; Drilling Intersects Include 10.81 g/t Gold over 3.4 metres, 9.64 g/t Gold over 3.3 metres, 1,431.6 g/t Silver over 2.9 metres and 642.3 g/t

VANCOUVER, British Columbia, April 15, 2024 (GLOBE NEWSWIRE) -- Calibre Mining Corp. (TSX: CXB; OTCQX: CXBMF) (the “Company” or “Calibre”) is pleased to announce drill results from its 2023 resource conversion and expansion program within its 176 km² Eastern Borosi Mine Complex (“Eastern Borosi”) located in northeastern Nicaragua, adjacent to a larger, 100%-owned, prolific 7,281 km² Atlantic Mineral Concession package.

Gold highlights from the Eastern Borosi drill program

• 6.87 g/t Au over 7.0 metres Estimated True Width (“ETW”) including 19.80 g/t Au over 1.1 metres ETW and 6.08 g/t Au over 3.8 metres ETW in Hole BL-23-118;
• 5.72 g/t Au over 8.9 metres ETW including 8.21 g/t Au over 4.8 metres ETW and 7.50 g/t Au over 1.3 metres ETW in Hole BL-23-131;
• 8.46 g/t Au over 5.8 metres ETW including 14.80 g/t Au over 2.9 metres ETW in Hole BL-23-133;
• 7.06 g/t Au over 17.7 metres ETW including 14.70 g/t Au over 3.3 metres ETW and 12.69 g/t Au over 3.4 metres ETW and 8.92 g/t Au over 2.3 metres ETW in Hole BL-23-136;
• 10.81 g/t Au over 3.4 metres ETW including 19.10 g/t Au over 1.8 metres ETW in Hole BL-23-143;
• 9.64 g/t Au over 3.3 metres ETW in Hole BL-16-044; and
• 5.77 g/t Au over 14.5 metres ETW including 14.00 g/t Au over 3.8 metres ETW and 10.00 g/t Au over 2.2 metres ETW in Hole GTH-BL-23-006.
  

Silver highlights from the Eastern Borosi drill program

• 1,431.6 g/t Ag over 2.9 metres ETW including 1,240.5 g/t Ag over 1.4 metres ETW in Hole BL-15-018;
• 642.3 g/t Ag over 5.0 metres ETW including 1,014 g/t Ag over 2.0 metres ETW in Hole BL-15-017;
• 401.8 g/t Ag over 3.5 metres ETW including 925.0 g/t Ag over 1.3 metres ETW in Hole BL-23-111;
• 318.1 g/t Ag over 1.5 metres ETW in Hole BL-23-112;
• 307.3 g/t Ag over 2.7 metres ETW in Hole BL-23-115;
• 227.0 g/t Ag over 9.0 metres ETW including 247.8 g/t Ag over 4.8 metres ETW and 437.0 g/t Ag over 1.3 metres ETW in Hole BL-23-131; and
• 181.9 g/t Ag over 2.8 metres ETW including 288.5 g/t Ag over 1.7 metres ETW and 162.6 g/t Ag over 5.8 metres ETW including 225.2 g/t Ag over 2.9 metres ETW in Hole BL-23-133.
  

Note: Estimated True Widths for reported vein intercepts are based on 3D models of individual veins. Estimates are determined in cross-section by measuring the modelled vein thickness perpendicular to the vein margins and through the midpoint of the drill hole intercept. Percentage-based differences between individual ETWs and down-hole interval lengths will vary between drill holes depending on drill hole inclination, variations in vein strike and dip, and overall geometries of the different vein systems.