Luca intersects 184 m of 1.2 g/t Au, 72 g/t Ag, 0.4% Cu, 0.5% Pb, 1.7% Zn at Largo Norte

LUCA INTERSECTS 184 METRES OF 1.2 G/T GOLD, 72 G/T SILVER, 0.4% COPPER, 0.5% LEAD AND 1.7% ZINC AT THE LARGO NORTE ZONE, CAMPO MORADO MINE

PR Newswire

VANCOUVER, BC , Aug. 6, 2026 /PRNewswire/ -- Luca Mining Corp. ("Luca" or the "Company") (TSXV: LUCA) (OTCQX: LUCMF) (Frankfurt: Z68) is pleased to announce new underground drill results from its ongoing exploration program at the Campo Morado polymetallic VMS mine in Guerrero State, Mexico. The results continue to expand high-grade mineralization in multiple unmined zones located adjacent to existing underground infrastructure, highlighting the potential to grow near-mine resources and extend mine life.

Highlights

Continued success expanding high-grade, gold and silver-rich VMS mineralization immediately adjacent to existing underground infrastructure, highlighting the potential to improve near-term grades and extend mine life

Underground drillhole CMUG-26-50 intersected 183.7 metres ("m") of 1.18 g/t Au, 72.42 g/t Ag, 0.39% Cu, 0.45% Pb and 1.67% Zn from 3.6 m; including 18.3 m of 2.64 g/t Au, 152.34 g/t Ag, 0.53% Cu, 1.05% Pb and 2.52% Zn from 11.9 m in the unmined Large Norte zone

Surface drillhole CMNJ-26-02 intersected 9.6 metres ("m") of 4.05 g/t Au, 241.09 g/t Ag, 0.90% Cu, 1.57% Pb and 2.72% Zn from 175.3 m; including 1.2 m of 5.83 g/t Au, 509.00 g/t Ag, 0.70% Cu, 2.63% Pb and 0.42% Zn from 176.7 m in the unmined Naranjo zone

Underground drillhole CMUG-26-46 intersected 90.6 m of 0.99 g/t Au, 40.07 g/t Ag, 0.94% Cu, 0.18% Pb and 0.73% Zn from 0.0 m, including 11.7 m of 2.86 g/t Au, 43.73 g/t Ag, 0.96% Cu, 0.68% Pb and 1.55% Zn from 79.2 m, expanding previously defined mineralization in the unmined Naranjo zone

Exploration drilling continues at Campo Morado with two surface drill rigs and one underground drill rig. To date, 13,571 m has been dril