LUCA Intersects High-Grade GOLD at Reforma, Including 13 Metres of 11.4 Grams PER Tonne GOLD Equivalent
Luca Mining Corp.
Suite 410, 1111 Melville Street
Vancouver, BC, V6E 3V6, Canada
NEWS RELEASE
LUCA INTERSECTS HIGH-GRADE GOLD AT REFORMA, INCLUDING 13 METRES OF 11.4 GRAMS
PER TONNE GOLD EQUIVALENT
Vancouver, B.C., October 16, 2025: Luca Mining Corp. (“Luca” or the “Company”) (TSX-V: LUCA; OTCQX:
LUCMF; Frankfurt: Z68) is pleased to report analytical results from four additional surface drillholes at the
Reforma deposit and two underground drillholes at the Camp o 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 intercepts 13.0 metres (“m”) 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 3.7m 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 intercepts 24.6 m 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 11.6m 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 returns assays including 2.6 m 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 Drill Program
Surface drilling at Reforma continue s to confirm the size, tenor and grade of precious and base metal s
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 (See
Table 1 and Figures 1 to 6).
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 (38) priority targets have been identified from assessment
of the substantive historic al exploration database of Campo Morado and ranked , based on coincident
favourable geological, geochemical and geophysical interpretations.
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A total of 4,060m 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.
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Underground Drill Program
Underground d rillholes 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
20m 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 historic al drilling database. To date, 27 underground
diamond drillholes have been completed in 2025 totaling over 5,700 metres with “HQ” and/or “NQ” sized
diamond drill core.
Paul D. Gray, Luca´s 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.”
Table 1: Highlighted Diamond Drill Assay Results from UG Drillholes CMUG-25-23 through CMUG-25-24
and Surface Drillholes CMRF-25-08 through CMRF-25-11.
Hole ID From To Interval Au g/t Ag g/t Cu% Pb% Zn% AuEq
g/t
Core Recovery
%***
CMUG-25-023 18.8 25.5 6.7 0.96 82.11 2.19 0.10 0.10 - >90
Including
18.8 21.4 2.6 1.84 103.76 2.02 0.13 0.07 - >90
and
22.6 25.5 2.9 0.52 96.54 3.22 0.12 0.15 - >90
Including
22.6 23.0 0.3 2.92 173.50 4.40 0.30 0.02 - >90
CMUG-25-024 142.9 145.6 2.7 0.22 26.61 1.35 0.10 5.26 - >90
and
148.0 149.9 1.9 0.28 23.81 0.78 0.05 5.28 - >90
235.3 238.5 3.2 0.67 55.79 0.49 0.33 4.16 - >90
CMRF-25-08 181.4 183.4 2.0 3.03 865.00 0.21 0.66 0.11 16.91 39
CMRF-25-09 174.4 182.3 7.9 0.08 31.47 0.81 0.23 1.69 2.70 100
Including
179.3 182.3 3.1 0.18 32.37 1.43 0.06 0.80 3.33 100
190.1 194.3 4.2 0.08 46.67 2.05 0.01 0.40 4.23 100
205.9 218.5 12.7 0.97 59.65 0.77 0.35 1.97 4.12 89
Including
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211.8 217.8 6.0 1.39 65.27 0.76 0.49 2.17 4.74 100
Including
211.8 214.3 2.5 1.99 60.28 0.98 0.26 2.06 5.50 100
CMRF-25-10 124.4 145.6 21.2 3.53 160.69 0.55 0.94 2.26 8.20 98
Including
124.4 126.8 2.5 2.46 69.03 0.70 0.44 1.86 5.62 96
and
130.2 143.2 13.0 4.96 237.09 0.66 1.30 3.00 11.43 99
Including
139.5 143.2 3.7 8.19 578.08 0.48 2.83 5.60 21.29 100
and
144.8 145.6 0.8 4.13 141.00 0.87 2.11 4.31 10.31 97
CMRF-25-11 98.1 106.0 7.9 0.56 189.41 0.00 0.04 0.06 3.51 100
Including
99.4 104.7 5.3 0.57 239.91 0.00 0.05 0.07 4.31 100
165.8 190.4 24.6 2.25 74.54 0.86 0.49 2.39 6.01 100
Including
167.1 178.6 11.6 3.45 113.29 0.94 0.83 3.65 8.62 100
*True widths are estimated to be >90% of drilled intervals.
** The Gold equivalent calculation is: AuEq = Au + (Ag*0.0124) + (Cu%*1.2787) + (Pb%*0.2740) + (Zn%*0.3653), at $2,250 US$/oz Au, 28 US$/oz
Ag, 4.20 US$/lb Cu, 0.90 US$/lb Pb and 1.20 US$/lb Zn, respectively. Additionally, the AuEq calculation combines gold, zinc, silver, copper, and
lead, net of assumed metallurgical recoveries using deposit-average recovery value assumptions in a bulk floatation scenario provided by Ausenco
PTY Ltd. (70% for zinc, 55% for gold, 68% for silver, 68% for copper, and 60% for lead).
*** Core recovery at Reforma was an issue historically reported at Reforma and has continued to be a technical drilling challenge in 2025 drilling.
Table 2: Underground and Surface Drill Collar Details for Released Results
Hole ID UTM WGS84 Z14 Elevation
(m)
Azimuth Dip Final
Depth (m) Easting Northing
CMUG-25-23 379106 2010912 1,099 088 -48 251
CMUG-25-24 379104 2010912 1,099 087 -81 274
CMRF-25-08 380307 2013259 1,519 005 -69 188
CMRF-25-09 380305 2013258 1,519 300 -73 250
CMRF-25-10 380163 2013419 1,587 060 -55 169
CMRF-25-11 380163 2013419 1,587 032 -70 225
Analytical Method and Quality Assurance/Quality Control Measures
All drill core splits reported in this news release were analysed by Bureau Veritas of Durango, Mexico,
utilizing the Multi-Acid digestion ICP-ES 35-element MA300 analytical package with FA-430 30-gram Fire
Assay with AAS finish for gold on all samples. Au over-limits from FA -430 are re-analyzed by FA530 30 -
gram Fire Assay with Gravimetric finish. Ag over-limits from ICP MA300 analytical package are re-analyzed
by FA530 30-gram Fire Assay with Gravimetric finish. Similarly, Cu, Pb and Zn over-limits from ICP MA300
analytical package are re-analyzed by ICP Multi-Acid digestion MA370 package. All core samples were split
by core saw on-site at Luca’s core processing facilities at the Campo Morado Mine. Once split, half were
placed back in the core boxes with the other half of split samples sealed in poly bags with one part of a
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three-part sample tag inserted within. Samples were collected by Bureau Veritas at the Campo Morado
Mine site and transported to their laboratory in Durango, where they were prepared into 250-gram pulps
for gold fire assay . The pulps were then shipped to Bureau Veritas’s Analytical laboratory in Vancouver,
B.C., for final ICP analysis. A robust system of standards, 1/4 core duplicates and blanks was implemented
in the 2025 exploration drilling program and is monitored as chemical assay data become.
Qualified Person
The technical information contained in this news release has been reviewed and approved by Mr. Paul D.
Gray, P.Geo., Vice-President Exploration at Luca Mining. Mr. Gray is a Qualified Person for the Company
as defined by National Instrument 43-101.
About Luca Mining Corp.
Luca Mining Corp. (TSX-V: LUCA, OTCQX: LUCMF, Frankfurt: Z68) 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 square kilometres. It is an underground operation, producing zinc, copper, gold,
silver and lead. The mine is located in Guerrero State.
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.
On Behalf of the Board of Directors
(signed) “Dan Barnholden”
Dan Barnholden, Chief Executive Officer
Contact Information:
Sophia Shane
Director of Investor Relations
+1 604 306 6867
Glen Sandwell
Corporate Communications Manager
For more information, please visit: www.lucamining.com
Cautionary Note Regarding Forward-Looking Statements
Statements contained in this news release that are not historical facts are “forward-looking information”
or “forward -looking statements” (collectively, “Forward -Looking Information”) within the meaning of
applicable Canadian securities laws. Forward Looking Information includes, but is not limited to, estimated
production guidelines for 2025 and other possible events, conditions or performance that are based on
assumptions about the proposed exploration program and its anticipated results; the timing and costs of
future activities on the Company ’s properties, such as production rates and increases and sustaining
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capital expenditures; success of exploration, development, and metres to be drilled in exploration on the
Tahuehueto Mine site and the Campo Morado Mine site . In certain cases, Forward-Looking Information
can be identified using words and phrases such as “ plans”,” expects ”,” scheduled ”,” estimates ”,
“forecasts”, “intends”,” anticipates” or variations of such words and phrases. In preparing the Forward -
Looking Information in this news release, the Company has applied several material assumptions,
including, but not limited to, that the Company will be able to raise additional capital as ne cessary; the
current exploration, development, environmental and other objectives concerning the Tahuehueto Mine
can be achieved; that consistent and sustainable mill feed at Campo Morado Mine will be achieved; the
continuity of the price of gold and other metals and economic and political conditions. Forward -Looking
Information involves known and unknown risks, uncertainties and other factors which may cause the
actual results, performance, or achievements of the Company to be materially different from any future
results, performance or achievements expressed or implied by the Forward -Looking Information. There
can be no assurance that Forward -Looking Information will prove to be accurate, as actual results and
future events could differ materially from those anticipated in such statements. Accordingly, readers
should not place undue reliance on Forward-Looking Information. Except as required by law, the Company
does not assume any obligation to release publicly any revisions to Forward -Looking Information
contained in this news release to reflect events or circumstances after the date hereof or to reflect the
occurrence of unanticipated events.
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of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.