Calibre and Joint Venture Partners Continue Advancing Gold-Silver-Copper Projects on the Borosi Concessions, Northeast Nicaragua

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Oct. 17, 2013) - Calibre Mining Corp. (TSX VENTURE:CXB) (the "Company" or "Calibre") is pleased to provide an update on the Company's 100% owned gold-silver projects and gold-copper projects under joint venture with B2Gold Corp. ("B2Gold") (TSX:BTO)(NYSE MKT:BTG) and Alder Resources Ltd. ("Alder") (TSX VENTURE:ALR). Calibre's Borosi Concessions are located in the historic Mining Triangle (the "District") of northeast Nicaragua that has past production exceeding 8 million ozs of gold. Calibre and our Joint Venture partners control 785 km² of concessions in this prolific mining district which remains largely underexplored for porphyry gold-copper deposits, epithermal gold-silver systems and gold-copper skarn mineralization.

Highlights

100% Calibre Gold-Silver Projects

• Calibre's projects contain a NI 43-101 Inferred Mineral Resources exceeding 1.05 million ounces of gold and 8.4 million ounces of silver in three deposits,
  
  
• Work continues on the Montes de Oro gold skarn project where recent high grade trench results include; 52.3 metres grading 7.1 g/t gold, 27.5m grading 4.92 g/t gold and 19.3 metres grading 2.71 g/t gold located within a 400 metre by 650 metre gold-copper-zinc soil geochem anomaly,
  
  
• High grade gold-silver mineralization continues to be defined at the Guapinol-La Sorpresa gold-silver project in the Eastern Epithermal District. Gold-silver mineralization has been traced on surface for over 10 km on the Guapinol-La Sorpresa target where up to 5 vein systems have been identified with surface rock sampling returning up to 42.46 g/t Au and 2,457 g/t Ag.
  
  

Calibre's Joint Venture Projects

• Calibre (49%) and B2Gold (51%) continue to advance Primavera gold-copper joint venture where past drilling intersected significant porphyry-style mineralization including: 261.7 metres grading 0.78 g/t Au, 0.30% Cu,
  
  
• Calibre (49%) and B2Gold (51%) recently announced additional channel sampling results from the Minnesota gold-copper project including: 9.2 metres grading 4.17 g/t Au,
  
  
• Alder continues to earn-in to a 65% interest in the Rosita gold-copper-silver project where drilling has intercepted 65 metres grading 1.48 g/t Au, 0.20% Cu, and 2.0 g/t Ag.