LUCA Reports Results FOR First Drill Holes at Campo Morado IN over Ten Years and Celebrates the Milestone of One Million Hours Without Lost-Time Injury at Campo Morado Operations
Luca Mining Corp.
Suite 410, 1111 Melville Street
Vancouver, BC, V6E 3V6, Canada
NEWS RELEASE
LUCA REPORTS RESULTS FOR FIRST DRILL HOLES AT CAMPO MORADO IN OVER TEN YEARS
AND CELEBRATES THE MILESTONE OF ONE MILLION HOURS WITHOUT LOST-TIME INJURY AT
CAMPO MORADO OPERATIONS
Vancouver, B .C., April 8, 20 25: Luca Mining Corp. (“Luca” or the “Company”) (TSX -V: LUCA; OTCQX:
LUCMF; Frankfurt: Z68) is pleased to announce analytical results from six (6) of the first seven (7)
underground diamond drill holes of an ongoing 5,000 metre (“m”) p hase 1 exploration drill program at
the Camp Morado Polymetallic VMS mine in Guerrero State, Mexico and, in addition, having reached a
milestone of over 1,000,000 hours worked without a Lost-Time Incident (LTI).
• First drilling at Campo Morado since 2014 delivers encouraging results, including 5.6m @ 2.3 g/t
Au, 150 g/t Ag and 3.71% Zn in a new mineralized zone within the G9 Deposit.
• 14 underground drillholes completed to date as part of a 5,000m Phase 1 program targeting near-
mine resource expansion.
• Untapped mineral potential identified in underexplored zones – results to inform updated
mineral resource and mine plans.
• Surface drilling now underway to test district-wide targets including Reforma and El Rey – first
exploration there since 2010.
• One million hours worked LTI-free at Campo Morado over a period of 15 months – a major safety
milestone demonstrating strong operational discipline.
The Campo Morado Project hosts several polymetallic massive sulphide deposits containing zinc, copper,
silver, gold and lead mineralization within a highly prospective land package totaling over 121 square
kilometres within the Sierra Madre mineralized belt and this year’s underground exploration campaign is
the first substantive exploration the project and mine has seen since 2014.
Drillhole CMUG-25-01 targeted a previously untested zone, approximately 25m below the active mine
workings of Area 9 of the G9 Deposit and intersected a mineralised zone that returned 5.6 m of 2.3 g/t
gold, 150 g/t sliver, 0.56% copper, 0.74% lead and 3.71% zinc . Drillholes CMUG-25-06 and CMUG-25-07
intersected another mineralised zone that returned 6.3 m of 0.19 g/t gold, 7 g/t sliver, 0.80% copper,
0.01% lead and 5.10% zinc and 11.9 m of 0.13 g/t gold, 8 g/t sliver, 0.77% copper, 0.07% lead and 4.78%
zinc, respectively (See Table 1). These results highlight the existence of mineralization yet to be captured
in the Campo Morado mine plan – continued drilling efforts will target additional similar, near-mine areas.
Figure 1 presents the location of the drillholes, and Table 2 provides drill collar details.
Paul D. Gray, Luca VP Exploration, commented, "Luca has been able to execute an efficient underground
drilling program at Campo Morado that represents the first stage the Company’s plan to realize the
untapped mineral potential of the Campo Morado Mine and District. The Campo Morado deposit hosts
additional mineral potential beyond the extent of its known resources. In conjunction with the ongoing
underground drill program, Luca has now initiated a surface drilling campaign focused on the larger
Campo Morado District – these efforts will include a comprehensive assessment of the Reforma and El
Rey deposits; neither of which has seen any exploration since 2010. With 38 priority targets defined on
the Campo Morado project (See Figure 2) - Luca looks forward to testing these targets across the Campo
Morado VMS Camp.”
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Figure 1 – Campo Morado Drill Hole Locations
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Figure 2 – Campo Morado Exploration Targets
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Table 1: Highlighted Diamond Drill Assay Results from Drillholes CMUG- 25-01, CMUG-25-02, CMUG-25-
03, CMUG-25-05, CMUG-25-06 and CMUG-25-07.
Hole ID From To Interval* Au g/t Ag g/t Cu % Pb % Zn %
CMUG-25-01 25.7 36.9 11.2 0.27 10.38 0.21 0.16 2.35
75.1 80.7 5.6 2.30 149.86 0.56 0.74 3.71
85.8 96.9 11.1 0.24 23.21 0.92 0.03 0.98
Including 90.7 96.3 5.5 0.28 28.07 1.43 0.03 1.26
CMUG-25-02 2.7 8.7 6.0 1.04 30.10 0.23 0.19 0.93
Including 3.3 6.5 3.2 1.26 37.90 0.30 0.32 0.90
CMUG-25-03 36.3 39.5 3.2 0.10 6.30 0.39 0.02 2.12
75.4 77.7 2.2 0.09 6.23 0.76 0.03 1.87
79.1 82.4 3.3 0.27 9.19 0.83 0.02 1.81
CMUG-25-05 79.5 83.2 3.8 0.18 15.36 0.31 0.09 1.84
CMUG-25-06 17.8 20.1 2.3 0.27 21.32 0.68 0.07 2.16
48.0 51.2 3.2 0.65 31.79 0.85 0.03 0.12
90.0 112.5 22.5 0.20 7.55 0.55 0.03 2.95
including 91.3 97.6 6.3 0.19 7.12 0.80 0.01 5.10
that includes 92.8 95.5 2.7 0.10 10.70 1.46 0.01 8.58
and including 98.2 101.1 2.9 0.10 7.62 1.00 0.09 5.79
that includes 99.6 101.1 1.4 0.12 13.50 1.91 0.17 11.02
CMUG-25-07 12.9 19.3 6.4 0.67 32.55 0.72 0.08 2.96
21.2 30.3 9.1 0.49 19.69 0.70 0.12 2.97
42.0 46.6 4.6 0.59 50.44 1.21 0.21 1.05
54.6 55.9 1.3 0.59 32.94 0.92 0.36 0.57
72.6 74.4 1.8 0.44 25.95 0.98 0.01 0.03
87.6 99.5 11.9 0.13 7.61 0.77 0.07 4.78
including 88.8 90.8 2.0 0.12 13.87 1.57 0.07 12.02
and including 97.1 99.5 2.3 0.05 8.28 1.77 0.03 5.74
101.0 111.3 10.3 0.16 6.78 0.87 0.11 2.18
*True widths are estimated to be >90% of drilled intervals.
The first seven (7) drillholes of the 2025 program targeted an under drilled area within the Area 9 Zone –
an area of active mine development; CMUG-25-01 through CMUG-25-05 were drilled generally west from
a single drill station within Area 9 Zone of the G9 Deposit, and Drillholes CMUG- 25-06 and CMUG-25-07
were drilled generally east from a single drill station in Area 9. These two drill stations are located
approximately 340m from each other and the drillholes were focused on testing an area interpreted t o
contain extensions to previously defined VMS mineralization. This high-priority area, which can be quickly
integrated into the Campo Morado mine plan, proved to host appreciable widths of mineralization above
mine-cutoff grades.
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To date, 14 underground diamond drillholes have been completed for over 2,000 m as part of the current
exploration campaign which has a primary objective to define mineable resources in close proximity to
existing mine workings as well as within zones interpreted to host extensions of the mineralization as
defined from the extensive historic drilling database this property offers. It is anticipated that these
drillholes will inform a planned updated Mineral Resource at Campo Morado and will combine to add
mineralized economic material into the near-term and medium-term Campo Morado Mine Plan.
Table 2: Underground Drill Collar Details for Released Results
UTM WGS84
Hole_ID Easting Northing Elevation Azimuth Dip Depth
CMUG-25-001 379067 2011287 1047 316 -25 141.5
CMUG-25-002 379067 2011287 1048 318 15 102.1
CMUG-25-003 379066 2011285 1048 268 -21 141.0
CMUG-25-005 379066 2011285 1047 301 12 120.0
CMUG-25-006 378913 2011360 1019 133 -7 112.5
CMUG-25-007 378913 2011359 1019 143 -19 120.0
About 2025 Campo Morado Surface Exploration Program
Luca’s inaugural surface drill program is now underway and will be run in parallel with the on -going
underground exploration program at Campo Morado. A Phase 1 program is planned to consist of 2,500m
of diamond drilling focused on definition and expansion of the Reforma and El Rey Deposits (located
approximately one kilometer north and east of the main Campo Morado Mine. These deposits host
mineral resources (See Tables 3 and 4 and the Campo Morado Technical Report) which have not been
assessed in any way in over 14 years.
Thirty-eight (38) priority targets have been identified (based on assessment of the substantive historic
geologic database of Campo Morado) and ranked based on co -incident geological, geochemical and
geophysical interpretations). Several of these targets, including Reforma and El Rey, have seen historic
exploration including diamond drilling; however, the majority are un drilled. Considering the fertile
geologic settling of the large Campo Morado concessions, each of these targets has the potential to host
VMS mineralization and Luca intends to prioritize and systematically explore the larger Campo Morado
concession package in the coming months.
Of particular interest with respect to Reforma and El Rey is the elevated precious metal content that has
been defined. Economics have shifted since Reforma and El Rey were first explored in the 1990s and Luca
believes the potential precious metal endowment of these, and other related zones can add to the mineral
resources of the greater property package.
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Table 3: Reforma Zone Mineral Resource Estimate*
Threshold
ZnEq (%)
ZnEq (%)
Tonnes
Au (g/t)
Ag (g/t)
Cu (%)
Pb (%)
Zn (%)
Measured
3.0 6.65 2,163,000 1.86 106 0.80 0.72 2.26
4.0 7.48 1,711,000 2.17 123 0.82 0.84 2.61
5.5 8.93 1,115,000 2.77 155 0.86 1.06 3.19
7.0 10.34 740,000 3.30 187 0.92 1.29 3.68
Indicated
3.0 6.29 5,290,000 1.59 110 0.83 0.70 1.94
4.0 7.03 4,196,000 1.83 124 0.89 0.81 2.20
5.5 8.16 2,807,000 2.23 149 0.97 0.99 2.55
7.0 9.44 1,700,000 2.65 182 1.06 1.21 2.89
Measured + Indicated
3.0 6.39 7,453,000 1.67 108 0.82 0.71 2.03
4.0 7.16 5,907,000 1.93 124 0.87 0.82 2.32
5.5 8.38 3,922,000 2.38 150 0.94 1.01 2.73
7.0 9.71 2,440,000 2.85 184 1.02 1.23 3.13
Inferred
3.0 5.71 448,000 1.49 95 0.97 0.63 1.30
4.0 6.71 311,000 1.87 111 1.18 0.76 1.37
5.5 7.65 213,000 2.27 131 1.33 0.88 1.45
7.0 9.16 101,000 2.78 168 1.54 1.14 1.67
*Source 2018 Campo Morado Technical Report dated March 30, 2018
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Table 4: El Rey Zone Mineral Resource Estimate*
Threshold
ZnEq (%)
ZnEq (%)
Tonnes
Au (g/t)
Ag (g/t)
Cu (%)
Pb (%)8
Zn (%)
Measured
3.0 5.99 615,000 1.53 83 0.52 0.66 2.70
4.0 6.9 453,000 1.87 97 0.51 0.80 3.20
5.5 7.96 304,000 2.25 119 0.51 0.96 3.72
7.0 8.87 203,000 2.66 139 0.51 1.11 4.11
Indicated
3.0 5.42 1,162,000 1.29 70 0.48 0.68 2.48
4.0 6.12 853,000 1.50 78 0.49 0.78 2.89
5.5 7.15 491,000 1.82 94 0.51 0.95 3.42
7.0 8.46 206,000 2.39 117 0.55 1.17 3.94
Measured + Indicated
3.0 5.62 1,777,000 1.37 74 0.49 0.67 2.56
4.0 6.39 1,306,000 1.63 85 0.50 0.79 3.00
5.5 7.46 795,000 1.98 103 0.51 0.95 3.53
7.0 8.66 409,000 2.52 128 0.53 1.14 4.02
Inferred
3.0 5.14 211,000 1.25 63 0.41 0.70 2.44
4.0 5.71 154,000 1.39 68 0.44 0.77 2.77
5.5 7.11 64,000 1.87 88 0.47 0.96 3.51
7.0 8.05 31,000 2.50 110 0.54 1.03 3.67
*Source 2018 Campo Morado Technical Report dated March 30, 2018
About 2025 Campo Morado Underground Exploration Program
The current Campo Morado drill campaign represents the first meaningful exploration program carried
out on the property since 2014 and is designed to target the addition of mineral resources to the near -
and medium-term mine plan at Campo Morado.
The Company plans up to 5,000 metres of underground diamond drilling from approximately 25 holes
during this first phase of exploration activities. This program's primary target is the definition of additional
mineral resources from under-drilled zones proximal to existing underground production areas, as well as
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the identification of mineralization within previously untested areas with high potential for the discovery
of new mineral resources.
Previous exploration at Campo Morado has combined to produce an extensive set of high -quality,
proprietary geological data, including over 600,000 metres of underground and surface drilling, property-
wide geologic/structural mapping, approximately 30,000 g eochemical soil samples, and a variety of
airborne and ground -based geophysical surveys (including gravity, electromagnetics and induced
polarization). Analyses of these geophysical survey data sets, particularly gravity, resulted directly in the
discovery and definition of mineralized zones on the property and will continue to guide all exploration
initiatives. This large geophysical data set is currently being compiled, cleaned and reinterpreted by Luca
in an effort to prioritize the greater than 38 exploration targets identified to date across the property.
1,000,000 Hours LTI Free at Campo Morado
The Campo Morado Team has achieved an exceptional safety milestone with over one million hours
without a lost-time injury (“LTI”) at its Campo Morado mine, in Guerrero State, Mexico. This achievement
underscores the Company’s unwavering commitment to safety and operational excellence.
Dan Barnholden, CEO, commented, “ I am extremely proud of this achievement. Surpassing one million
hours without a LTI is a testament to the dedication, professionalism and teamwork of our operations
team. Their commitment to high safety standards, clear communication and collaboration has made this
possible. As always, safety remains our number one priority, and we are determined to continue building
on this outstanding track record as Campo Morado continues to produce over the coming years.”
Maintaining a safe and efficient work environment is a key pillar of the Company’s sustainability and
operational strategy. Luca continually invests in comprehensive safety training, rigorous protocols and
advanced monitoring systems to protect health and well -being of the Company’s workforce. This
milestone reflects the effectiveness of these initiatives, and the strong safety cul ture embedded across
the Company’s operations.
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 samples
were placed back in the core boxes with the other half of split samples sealed in poly bags with one part
of a three -part sample tag inserted within. Samples were collected by Bureau Veritas at the Campo
Morado Mine site and transported to Bureau Veritas’ Durango Laboratory, where samples are prepared
to a 250-gram pulp and analyzed for Gold by Fire assay with pulps shipped to Bureau Veritas’s Analytical
laboratory in Vancouver, B.C., for final ICP chemical analysis. A robust system of standards, 1/4 core