Aztec Expands Drilling Program at the Tombstone Project, Arizona
PO Box 55 T: 604-685-9770
Suite 1030 – 505 Burrard Street www.aztecminerals.com
Vancouver, BC V7X 1M5
Aztec Expands Drilling Program at the Tombstone Project, Arizona
• Program expanded to a minimum 8,500 meters & extended into Q1 2026
• 34 RC holes have now been drilled
• 21 holes are pending results as the drilling program continues
Vancouver, Canada – December 4, 2025 - Aztec Minerals Corp. (AZT: TSX-V, OTCQB: AZZTF) (“Aztec” or
the “Company”) announces an update to the ongoing Tombstone Property Reverse Circulation and Core
drilling program in Southeastern Arizona. The 2025 drilling program has now completed 34 RC drill holes,
13 drill holes have been reported (please see new releases dated August 14, September 23, and October
31, 2025). The drilling program has completed 5,960 meters of RC drilling and 4 95m of core drilling to
date. The company currently has 2 1 RC drill holes awaiting geochemical analysis at the Bureau Veritas
Laboratory.
Drilling Program Expansion
The Company also announces that the Tombstone Property JV Management Committee met recently and
approved an expansion of the drill program from 7,500 meters to at least 8 ,500 meters. The expanded
program comprises of 7,000 meters of RC and a minimum of 1,500 meters of core drilling and is now
expected to extend into the first quarter of 2026.
Analytical Turnaround Time Update
Aztec has been advised that sample backlogs and turnaround times for geochemical analysis at the Bureau
Veritas laboratory are expected to improve with recent addition of staff and recently completed analysis
equipment repair. The company expects to receive additional analytical results within the next 30 days.
Core Drilling Update
The core drilling portion of the program has resumed and has currently advanced 282 meters to 465
meters total depth in the drillhole TC25-03 (target TR24-13). Core drilling is also expected to continue to
test to depth the previously identified AMT target under the Bisbee formation in the thick Paleozoic
carbonate formations below by re-entering the core drill hol es. Aztec has previously identified several
large, strong, conductive bodies, underneath the historic gold -silver district through NSAMT (natural -
source audio-frequency magneto-telluric surveys) anomalies1.
Figure 1: Tombstone 2025 RC Drilling Plan Completed to Date
QAQC Statement
Drill samples are collected every 1.52 m from RC chips and every 1.52 m from sawing the core drill holes.
The samples are analyzed by Bureau Veritas for gold with a 30-gram sample size using the method FA430
followed by MA300. Bureau Veritas is independent of the Company and of the Qualified Person. Over
limits, when present, are analyzed by MA370 or FA5 30. The company uses quality assurance -quality
control as a standard part of its sampling -assaying-assessments in conjunction with its exploration
sampling programs. Samples and their collection are controlled by an industry standard conforming QAQC
program including all drill holes containing certified blanks, standards, and duplicates . The samples are
being regularly shipped to and received by the Bureau Veritas Minerals laboratory in Hermosillo, Mexico
for geochemical analysis. The QAQC for the drilling programs has been evaluated and found to have good
results.
Tombstone Project Overview
Aztec Minerals holds a 85.0% interest in the Tombstone Property Joint Venture, which includes most of
the original patented mining claims in the main district as well as some recently acquired properties.
The main target of the current drilling is to continue testing the shallow, bulk tonnage, potentially heap
leachable, mesothermal gold -silver oxide mineralization adjacent and below the previously mined
Contention pit by step -out drilling. Future drilling is expected to focus on follow-up on the current
program’s results. It is anticipated that possible targeting could include strike and dip extensions of the
shallow oxide mineralization, and move along those trends deeper into the sulfide zone as historically
there was significant production to 300 m depth*2.
The Tombstone project is located 100 kilometers (km) southeast of Tucson, Arizona and covers much of
the historic Tombstone silver district. Tombstone is renowned for its high grade, oxidized, silver -gold
mesothermal stringer lode veins, hydrothermal brec cias and manto CRD orebodies that were mined in
the late 1800’s and early 1900’s. The historic silver production in the Tombstone district from 1878 to
1939 was estimated at 32 million ounces and 250,000 ounces of gold*2.
The district geology consists of a mix of shallow-level, oxidized Au-Ag and base metal deposits related to
CRD and skarns hosted in folded and thrusted sediments, intrusive dikes, and lode veins, and as well the
under explored, sulfide versions located below the water table.
Host rocks to the mineralization are primarily the clastic sediments of the lowest portion of the Cretaceous
Bisbee Formation. Between 50 and 300 meters (m) in depth, the Bisbee is underlain by approximately
two kms thick of the same Paleozoic carbonate formations that host the 110 MT Hermosa -Taylor zinc-
lead-silver deposit of South32 located 60 km southwest of Tombstone*3.
Aztec believes that the historic silver mines at Tombstone could be related to a much larger mesothermal
system with CRD mineralization below the old mines. Since 2017, Aztec has completed geological
mapping, geochemical sampling and geophysical surveying to identify the most prospective areas for Au-
Ag mineralization around and below the Contention open pit, and CRD zinc -lead-copper-silver-gold
mineralization below the entire district. Aztec management views the district as highly prospective for
the discovery of mesothermal and CRD mineralization.
Summary Tombstone Project Highlights
• Well located property on patented (33) and unpatented (73) claims (663 hectares / 1639 acres),
covers much of the historic Tombstone silver mining district, great infrastructure, local town, road
access, full services, water, power
• Historic silver district *2 produced 32 million ounces of silver and 250,000 ounces of gold from
1878-1939, in high grade, oxidized, silver -gold-lead-zinc-copper vein, breccia and CRD deposits,
and small open pit heap leach production in late 1980’s
• Drilling by Aztec in 2020 -24 has demonstrated that the Contention Pit target has significant,
shallow. oxidized Au-Ag bulk tonnage mineralization which is open in all directions
• Multiple other prospective target s in Cretaceous and Paleozoic rocks related to major NW and
NNE trending structures hosting porphyritic intrusions crosscutting a possible caldera ring
structure
* Aztec has not verified these historic results and is not relying on them. Aztec has in its possession the
historic drill logs, maps and reports but does not have any information on the quality assurance or quality
control measures taken in connection with these historical exploration results.
Noted References:
1 – “Zonge International, AMT Survey, Tombstone Project, Cochise County, AZ, Data Acquisition and
Processing Report, Prepared for Aztec Minerals, 18 May 2020, Zonge Job #20013”
2 – Greeley, Michael N., A Brief History and Review of Ore Grades and Production in the Tombstone
Mining District with Emphasis on the Contention Mine Area, June 1984
3 - M3 Engineering and Technology Corp., Hermosa Project N.I. 43-101F1 Pre-Feasibility Study, January
2014
The scientific and technical information contained in this news release has been reviewed and approved
by Allen David Heyl, B.Sc., CPG – AIPG No.11277, VP Exploration of Aztec, a Qualified Person under NI43-
101. Mr. Heyl supervises the Tombstone exploration programs. Mr. Heyl has verified the data, which
included a review of the sampling, analytical and test methods underlying the data, information and
opinions disclosed herein.
“Simon Dyakowski”
Simon Dyakowski, Chief Executive Officer
Aztec Minerals Corp.
About Aztec Minerals – Aztec is a mineral exploration company focused on two emerging discoveries in
North America. The Cervantes project is an emerging porphyry gold-copper discovery in Sonora, Mexico.
The Tombstone project is an emerging gold-silver discovery with high grade CRD silver-lead-zinc potential
in southern Arizona. Aztec’s shares trade on the TSX -V stock exchange (symbol AZT) and on the OTCQB
(symbol AZZTF).
Contact Information - For more information, please contact:
Simon Dyakowski, President & CEO, Director
Tel: (604) 685-9770
Fax: (604) 685-9744
Email: [email protected]
Website: www.aztecminerals.com
Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV) accepts responsib ility
for the adequacy or accuracy of this release. No stock exchange, securities commission or other regulatory authority has approved
or disapproved the information contained herein.
Forward-Looking Statements:
This news release contains “forward‐looking information or statements” within the meaning of applicable securities laws, whic h
may include, without limitation, completing ongoing and planned work, statements relating to advancing the Tombstone Project,
drill and sampling results including additional potential work and results therefrom, the Company’s plans for its Tombstone
Project, potential for further expansion of the mineralization at the Tombstone Project, expected results and outcomes, the
technical, financial and business prospects of the Company, its project and other matters. All statements in this news release,
other than statements of historical facts, that address events or developments that the Company expects to occur, are forward -
looking statements. Although the Company believes the expectations expressed in such forward-looking statements are based on
reasonable assumptions, such statements are not guarantees of future performance and actual results may differ materially from
those in the forward-looking statements. Such statements and information are based on numerous assumptions regarding present
and future business strategies and the environment in which the Company will operate in the future, including the price of metals,
the ability to achieve its goals, that general business and economic conditions will not change in a material adverse manner, that
financing will be available if and when needed and on reasonable terms. Such forward-looking information reflects the Company’s
views with res pect to future events and is subject to risks, uncertainties and assumptions, including the risks and uncertainties
relating to the interpretation of exploration results, risks related to the inherent uncertainty of exploration and cost estimates and
the potential for unexpected costs and expenses, and those filed under the Company’s profile on SEDAR+ at www.sedarplus.ca.
Factors that could cause actual results to differ materially from those in forward looking statements include, but are not li mited
to, co ntinued availability of capital and financing and general economic, market or business conditions, adverse weather or
climate conditions, failure to maintain or obtain all necessary government permits, approvals and authorizations, failure to obtain
or maintain community acceptance (including First Nations), decrease in the price of gold, silver and other metals, increase in
costs, litigation, and failure of counterparties to perform their contractual obligations. The Company does not undertake to update
forward‐looking statements or forward‐looking information, except as required by law.