Luca Mining Corp. [TSXV: LUCA; OTCQX: LUCMF; FRA: Z68] reported analytical results from four additional surface drillholes at the Reforma deposit and two underground drillholes at the Campo Morado polymetallic VMS mine in Guerrero State, Mexico.
Luca continues to identify high-grade gold and silver intercepts from the Reforma Deposit as the drilling program targets expansion of the existing Mineral Resource.
Surface drillholes CMRF-25-08 through CMRF-25-11 were all collared within the Reforma Deposit, and intersected notable intervals of massive sulphide mineralization.
Surface drillhole CMRF-25-10 intercepted 13.0 metres of 11.4 g/t AuEq (4.96 g/t gold, 237.09 g/t silver, 0.66% copper, 3.00% zinc and 1.30% lead), including 3.7 metres of 21.3 g/t AuEq (8.19 g/t gold, 578.08 g/t silver, 0.48% copper, 5.60% zinc and 2.83% lead).
Surface drillhole CMRF-25-11 intercepted 24.6 metres of 6.0 g/t AuEq (2.25 g/t gold, 74.54 g/t silver, 0.86% copper, 2.39% zinc and 0.49% lead), including 11.6 metres of 8.6 g/t AuEq (3.45 g/t gold, 113.29 g/t silver, 0.94% copper, 3.65% zinc and 0.83% lead).
Underground drillhole CMUG-25-023 returned assays including 2.6 metres of 1.84 g/t gold, 103.76 g/t silver, 2.02% copper, 0.07% zinc and 0.13% lead from an unmined area within 20 metres of current underground workings.
Based on strong results, Luca has increased the surface drill program at Campo Morado by 120%, with the 2025 surface drill budget now totalling 5,500 metres of drilling. The underground drill program has been expanded 50% and will now total 7,500 metres of drilling in 2025. Drilling from both surface and underground continues.
Surface drilling at Reforma continues to confirm the size, tenor and grade of precious and base metals historically reported within the deposit, as well as better define the deposit and test the expansion potential of the Reforma massive sulphide mineralization. Each hole intercepted massive sulphide where expected and on average over greater widths and higher grades than the geological model predicted.
The ongoing surface drill program is designed to confirm and expand the existing mineral resources at both the Reforma and El Rey deposits, which both display elevated precious metals grades relative to the other deposits at Campo Morado. The program is also designed to collect material from these zones for additional metallurgical test work focused on increasing precious metals recoveries at the project.
In addition, Luca also plans to drill untested exploration targets nearby to Reforma and El Rey, none of which has ever been drill tested. Thirty-eight priority targets have been identified from assessment of the substantive historical exploration database of Campo Morado and ranked, based on coincident favourable geological, geochemical and geophysical interpretations.
A total of 4,060 metres of surface drilling has been completed at the Reforma Deposit from 16 surface drillholes with HQ and/or PQ sized diamond drill core. The surface exploration program has now shifted to the El Rey deposit, with two holes completed.
Underground drillholes CMUG-25-23 and CMUG-25-24 confirmed mineralization within a previously undrilled section of the C-108 Zone and returned higher grade gold and copper located approximately 20 metres from existing mine workings. This area defined by this drillhole will be the focus of follow-up exploration efforts as the C-108 Zone comes into the Campo Morado Mine plan in 2026.
The underground drilling program at Campo Morado is targeted to advance the definition of mineable resources near existing mine working as well as testing new zones interpreted to host extensions of known mineralization based on the property’s extensive historical drilling database. To date, 27 underground diamond drillholes have been completed in 2025 totaling over 5,700 metres.
Paul D. Gray, VP of Exploration, commented, “Luca continues to successfully delineate and expand the precious metals rich Reforma Deposit with our surface exploration drill program. In addition, with drilling from underground we have defined new mineralized areas in close proximity to current mining operations. Based on the drilling success achieved to date, both of our 2025 surface and underground drill programs have been significantly expanded. This is a transformative period for the Company as Luca begins to unlock the property-wide, gold-rich VMS potential of the Campo Morado Property.”
Luca Mining Corp. is a Canadian mining company with two wholly owned mines located in the prolific Sierra Madre mineralized belt in Mexico. These mines produce gold, copper, zinc, silver, and lead and generate strong cash flow. Both mines have considerable development and resource upside as well as world-class exploration potential.
The company’s Campo Morado Mine hosts VMS-style, polymetallic mineralization within a large land package comprising 121 km2. It is an underground operation, producing zinc, copper, gold, silver and lead.
The Tahuehueto Mine is a large property of over 100 square kilometres in Durango State. The project hosts epithermal gold and silver vein-style mineralization. Tahuehueto is a newly constructed underground mining operation producing primarily gold and silver. The Company has successfully commissioned its mill and is now in commercial production.
