Luca intercepts 4.7 m of 6.7 g/t gold equivalent at Tahuehueto

Luca Intersects 4.7 Metres of 6.7 g/t Gold Equivalent at Tahuehueto Mine - A New High-Grade Breccia Zone Discovery PR Newswire VANCOUVER, BC , July 7, 2026 /PRNewswire/ -  Luca Mining Corp. ("Luca" or the "Company") (TSXV: LUCA) (OTCQX: LUCMF) (Frankfurt: Z68) reports new assay results from its ongoing 2026 drilling program at the Tahuehueto gold-silver mine in Durango, Mexico. Exploration drilling has continued to intersect high-grade gold mineralization in newly identified breccia zones, close to current mine workings, confirming continuity of breccia-hosted mineralization within the Creston vein system and highlighting the potential for near-mine resource expansion.  Highlights High-grade intercepts from surface drill holes targeting the Creston Vein, including: 4.7 metres ("m") of 6.73 g/t AuEq** ( 3.35 g/t Au, 109.05 g/t Ag, 0.68% Cu, 0.20% Pb, 12.06% Zn) in hole DDH26-246 including 0.6 m of 14.80 g/t AuEq ( 9.21 g/t Au, 300.00 g/t Ag, 0.76% Cu, 0.35% Pb, 12.64% Zn ) 4.5 m of 4.21 g/t  AuEq ( 1.61 g/t Au, 140.07 g/t Ag, 1.25% Cu, 0.25% Pb and 0.48% Zn ) in hole DDH26-SU-14 2.8 m of 6.90 g/t  AuEq ( 3.03 g/t Au, 223.94 g/t Ag, 0.62% Cu, 3.47% Pb and 3.83% Zn ) in hole DDH26-245 1.2 m of 10.37 g/t  AuEq ( 2.09 g/t Au, 451.00 g/t Ag, 4.24% Cu, 0.29% Pb and 0.13% Zn ) in hole DDH26-242 Drilling confirmed the continuity of mineralization in previously untested areas located 20 to 35 m below Level 20, extending known high-grade breccia zones at depth and further validating Luca's geological model Intercepts exceed current mined grades and occur within development distance of existing underground infrastructure, supporting potential integration into the near-term mine plan Verified vein-related mineralization at the Creston Vein in close proximity to current mining faces through the Termite drill program: 1.7 m of 13.27