Aztec Drilling Expands Oxide Gold-Silver Zone at Tombstone Project, Arizona; intersecting 0.62 gpt Au and 24.8 gpt Ag over 107.9m in Westside Area and 0.48 gpt Au and 12.6 gpt Ag over 112.5m at Contention Area
PO Box 55 T: 604-685-9770
Suite 1030 – 505 Burrard Street www.aztecminerals.com
Vancouver, BC V7X 1M5
Aztec Drilling Expands Oxide Gold-Silver Zone at Tombstone Project,
Arizona; intersecting 0.62 gpt Au and 24.8 gpt Ag over 107.9m in
Westside Area and 0.48 gpt Au and 12.6 gpt Ag over 112.5m at
Contention Area
• Step-Out Drilling Continues to Expand the Contention and Westside zones of
Oxide Au/Ag Mineralization
• Drill holes TR26-1, 2, 8, 9, 13 and 14 encountered multiple mineralized zones
expanding the Westside Anticline and Center target areas including an
intersection of 107.9m averaging 0.62 gpt Au and 24.8 gpt Ag
• Drill holes TR26-3, 4, 5, 6, 7, 11 and 12 expand the Contention Main target area
to the west and depth, with multiple mineralized zones including an intersection
of 112.5m averaging 0.48 gpt Au and 12.6 gpt Ag
• 59 RC holes including 5 pre-collars have now been drilled in the 2025-2026 drill
program with 9 drill holes pending final analysis as the drilling campaign
continues
Vancouver, British Columbia – April 15, 2026 - Aztec Minerals Corp. (AZT: TSX -V, OTCQB: AZZTF) (“Aztec” or the
“Company”) announces the results from 14 drill holes from its reverse circulation (“RC”) portion of the 2025-2026
drilling program at the Tombstone Property in Southeastern Arizona. Step out drilling in the Westside target area
of the property has discovered additional strong, wide, shallow oxide gold-silver intersections. The mineralized zone
has been further extended to 0.4km of width into the Westside area , with the C ontention Au/Ag zon e from the
northern property limit to over 1km N-S on strike. Pending drill results include additional Westside area drill targets
as well as several step out targets drilled in the immediate, westerly and deeper extensions of the Main Contention
zone. The 17,000m 2025-2026 drilling program has now completed 59 RC and 6 core drill holes.
Highlights from the RC drilling reported for the Contention and the Westside targets include:
• Hole TR26 -14 encountered multiple zones of oxide mineralization in the Bisbee sediments, including
10.6m averaging 0.195 gpt Au and 13.0 gpt Ag from surface, 107.9m averaging 0.618 gpt Au and 24.8 gpt
Ag from 39.5m, 48.6m averaging 0.091 gpt Au and 8.106 gpt Ag from 176.3m, and ending in 9.1m averaging
0.121 gpt Au and 10.17 gpt Ag from 234.1m. TR26-14 demonstrated that the entire width of the Westside
anticline has potential to host oxidized precious metal mineralization . TR26-14 drilled across the upper
portion of the Westside anticline towards the southwest from north of TC25-03.
• Hole TR26-01 drilled to test the Westside anticline. The drill hole intersected at depth two zones of oxidized
mineralization with historic mine workings, from 51.7m to 74.5m depth for 22.8m averaging 0.038 gpt Au
and 11.87 gpt Ag and then from 86.6 m to 110.9 m for 24.3 meters averaging 0.039 gpt Au and 13.37 gpt
Ag. TR26-01 demonstrated the location of the historic Westside mine workings and the surrounding area
of low grade, oxidized precious metal mineralization in the Westside anticline.
• Holes TR26 -05 and TR26 -06 are collared on the western limits of the central Contention area, drilling
towards the east to test the western limits and to depth the Contention mineralization . The drill hole s
intersected multiple zones of mineralization, TD’d in mineralization at over 250m depth and have confirmed
the Contention mineralization continues to depth and that it has expansive widths. The intersections
include in TR26-05 50.2m averaging 0.112 gpt Au and 4.90 gpt Ag and in TR26-06 59.3m averaging 0.104
gpt Au and 4.96 gpt Ag
• Hole TR26-07 is collared in the central portion of the Contention mineralization and expanded it to 239.3m
depth intercepting three mineralized zones, including 112.5m averaging 0.479 gpt Au and 12.64 gpt Ag
• Holes TR26-11 and TR26-12 are collared in western limits of the central Contention area, drilling towards
the east to test the western limits and to depth the Contention mineralization. Combined they expanded
the Contention Target mineralization 50 to 70 meters further west and to depth. TR26-11 intercepting
100.3m averaging 0.173 gpt Au and 11.46 gpt Ag and in TR26-12 intercepting 48.6m averaging 0.172 gpt
Au and 18.04 gpt Ag.
All of the fourteen RC drillholes reported herein intersected Au-Ag mineralization and joined portions of and also
expanded the Contention and Westside target areas to the west and to depth. The intercepts show broad continuity
of mineralization. All reported intersection lengths are apparent widths of mineralization, not true widths, which
can range at the property from 30% to 100% of apparent widths.
Aztec Minerals CEO Simon Dyakowski commented: “ Our expanded drill program continues to demonstrate the
potential for significant growth of the near-surface oxide gold-silver mineralized zone at Tombstone . We are no w
aggressively and successfully testing the Westside area target . Drilling in the Contention zone continues to
demonstrate consistently strong oxide gold and silver grades at shallow depths. The 17,000 meter 2025-2026
program is currently following up on Westside area targets, and testing newly generated targets in the Southwest
of the property which include the Ingersoll, Hard-up, and Independence targets. These new targets represent the
potential to reframe the project to an even larger scale with shallow targets in areas over 1km away from the historic
open pit operations.”
FIGURE 1. CROSS SECTION OF RC DRILL HOLE TR26-14 SHOWING AU AND AG ASSAY RESULTS .
TOMBSTONE 2025 -2026 DRILLING PLAN COMPLETED AND PENDING
FIGURE 1 & 3. PLAN MAP S SHOWING DRILL HOLE COLLARS FROM THE 2025 -2026 DRILL CAMPAIGN AT THE TOMBSTONE
PROPERTY , SOUTHEASTERN ARIZONA .
Core Drilling Update
The core drilling portion of the program in 2026 continues with drilling ongoing in the 7th attempted core hole in the
program TC26-03 targeting the central portion of the Contention mineralization of the property. Drill hole TC25-04
targeting the large, southern NSAMT target was recently completed at 831.7 m depth; however, was terminated by
drillhole c aving above the planned total depth of 1000m . TC25-04 encountered mild to moderate strength
retrograde exoskarns in the hornfels of the lower Cretaceous basal Bisbee siliciclastic sediments at 575 m depth and
it continued for the rest of the drillhole. The skarns are typified by epidote and chlorite with associated hematite
staining. The skarns are accompanied by several silicified hydrothermal breccia dikes with occasional Qfp clasts and
with evidence of potential “B-type” porphyry veinlets over that thickness. The skarns are notably more competent
rock than the hornfels. The underlying Paleozoic Naco Formation limestones were encountered at 783.8 m depth
in TC25-04.
Core drilling to -date has confirmed the NSAMT target as based on a geologic (Skarn) anomaly within the upper
portion of the NSAMT target. It was planned to continue drilling to depth in TC25 -04; however, drillhole caving
terminated the hole. The core rig was then moved to drill TC26-01 to test to the west and below of TR21-12 but due
to poor ground conditions and the completion of the RC precollar for TC26-02 the core rig was moved onto TC26-02
and it was completed at 861.9 m depth to test the southwestern NSAMT target. TC26-02 has intercepted skarning
and sulfides recently as well. 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.
The continued, successful drilling of the Contention pit area was supported by Aztec’s 3D geologic and underground
workings model that was constructed to assist in targeting potential expansion of the Contention system. The overall
Contention system has yet to be defined and marks the confluence of other mineralized zones including the Westside
Anticline.
Detailed Drillhole Summary Highlights (see Table 1 & 2 below):
• Hole TR2 6-01 – Collared above the northwestern portion of the Westside anticline to test across the
anticline. It was drilled northeasterly and to a depth of 117.4 meters. The drill hole intersected at depth two
zones of oxidized mineralization, from 51.7m to 72.9m depth for 22.8m averaging 0.038 gpt Au and 11.87
gpt Ag and then from 86.6m to 110.9m for 24.3 meters averaging 0.039 gpt Au and 13.37 gpt Ag. The
drillhole intersected mine workings at 71.5-73 m (Historic 2nd level) and at ended at 111-117m (Historic 4th
level stope) . TR26-01 demonstrated the location of the historic Westside mine workings and the
surrounding area of low grade, oxidized precious metal mineralization in t he Westside anticline. The
drillhole leaves the mineralization open to depth and all compass directions.
• Hole TR26-02 – Was collared west of TR25-08 in the central portion of the Westside Target area to test for
mineralization related to the Center stope’s anticline. It was drilled northerly and to a depth of 231 meters.
The drill hole intersected four zones of oxidized mineralization including the highest one from the surface
expanding the mineralization found in TR25-08. The intersections are: 0-19.8m, 19.8m averaging 0.136 gpt
Au and 12.62 gpt Ag; 54.7-60.8m, 6.1m averaging 0. 088 gpt Au and 13.67 gpt Ag; 91.2-100.3m, 9.1 m
averaging 0.0.94 gpt Au and 5.65 gpt Ag; and 130.7-147.4m, 16.7m averaging 0.076 gpt Au and 2.76 gpt
Ag. Drillhole leaves the mineralization open in all directions.
• Hole TR2 6-03 – Collared in the northern portion of the Property where the Contention and Westside
mineralization zones broadly join. Drilled as a high angle fan to TR25-25 to step out the mineralization to
the west and to depth. Drilled to 274.4m depth, it has three mineralized zones in its lower half. The
intersections are: 147.4-161.1m, 13.7m averaging 0. 069 gpt Au and 3.73 gpt Ag; 167.2-177.8m, 10.6m
averaging 0.103 gpt Au and 7.21 gpt Ag; and 193-205.2m, 12.2 m averaging 0.149 gpt Au and 8.7 gpt Ag.
The drillhole leaves the mineralization open to depth and to the west, south and north.
• Hole TR26-04 – Collared in the Westside area, north of TC25-34 drilling towards the east to test the junction
of the Westside Anticline and Contention mineralization. It was drilled to a depth of 207.3 meters. The drill
hole intersected three zones of oxidized mineralization. The intersections are: 53.2-63.8m, 10.6m averaging
0.057 gpt Au and 8.17 gpt Ag, 147.4-161.4m, 13.7 m averaging 0.040 gpt Au and 4.16 gpt Ag, and 168.7-
188.5m, 19.8 m averaging 0.220 gpt Au and 13.75 gpt Ag. The drillhole ends near mineralization and leaves
mineralization open to depth and to the west, east, south and north.
• Hole TR2 6-05 - Collared in the western limits of the central Contention area, south of TC2 5-08, drilling
towards the east to test t he western limits and to depth the Contention mineralization. It was drilled to a
depth of 256.1 meters. The drill hole intersected seven zones of mineralization, it TD’d in mineralization
and confi rmed the Contention mineralization continues to depth and that it has expansive widths. The
intersections are: 16.7-36.5m, 19.8m averaging 0.223 gpt Au and 8.78 gpt Ag; 60.8-73.0m, 12.2m averaging
0.117 gpt Au and 3.85 gpt Ag; 80.6-130.7m, 50.2m averaging 0.112 gpt Au and 4.90 gpt Ag; 136.8-158.1m,
21.3m averaging 0.117 gpt Au and 11.44 gpt Ag; 165.7-174.8m, 9.1m averaging 0.086 gpt Au and 4.65 gpt
Ag; 182.4-217.4m, 35.0m averaging 0.119 gpt Au and 5.95 gpt Ag ; and 231.0 -255.3m, 24.3m averaging
0.091 gpt Au and 3.6 gpt Ag ending the drill hole in mineralization.
• Hole TR26-06 – Collared in the western limits of the central Contention area, south of TC26 -05, drilling
towards the east to test the western limits and to depth the Contention mineralization. It was drilled to a
depth of 262.2 meters. The drill hole intersected five zones of mineralization, it TD’d in mineralization and
confirmed the Contention mineralization continues to depth and that it has expansive widths. The
intersections are: 31.9-47.1m, 15.2m averaging 0.124 gpt Au and 4.06 gpt Ag; 62.3-69.9m, 7.6m averaging
0.223 gpt Au and 11.66 gpt Ag; 88.2-120.1m, 31.9m averaging 0.159 gpt Au and 3.86 gpt Ag; 130.7-158.1m,
27.4m averaging 0.057 gpt Au and 29.22 gpt Ag; 202.2-261.5m, 59.3m averaging 0.104 gpt Au and 4. 96
gpt Ag ending the drill hole in mineralization.
• Hole TR26-07 – Collared in the central portion of the Contention mineralization. Drilled as a high angle fan
to TR21-03 to step out the mineralizatio n to the west and to depth. Drilled to 2 39.3m depth, it has three
mineralized zones. The intersections are: 50.2-162.6m, 112.5m averaging 0.479 gpt Au and 12.64 gpt Ag;
173.2-185.4m, 12.2m averaging 0.127 gpt Au and 8.11 gpt Ag; and 221.9-238.6m, 16.7 m averaging 0.049
gpt Au and 7.49 gpt Ag. The drillhole ends in mineralization and leaves the mineralization open to depth
and to the west, east, south and north.
• Hole TR26-08 – Collared in the central portion of the Westside area mineralization. Drilled northeasterly to
test for mineralization in the Bisbee sediments with the Boss dike and its workings. Drilled to 175.3m depth,
it has one mineralized zone. The intersection is: 121.6-129.2m, 7.6m averaging 0.576 gpt Au and 8.4 gpt
Ag. The drillhole leaves the mineralization open to depth and to the west, east, south and north.
• Hole TR26-09 – Collared in the central portion of the Westside anticline and oriented to the southeast,
semi-parallel to the axis of the anticline to test its mineralization. Drilled to 2 19.5m depth, it has three
mineralized zones. The intersections are: 35.0-45.6m, 10.6m averaging 0.069 gpt Au and 9.06 gpt Ag; 53.2-
59.3m, 6.1m averaging 0. 181 gpt Au and 13.1 gpt Ag; and 158.1-164.1m, 6.1 m averaging 0.04 1 gpt Au
and 7.37 gpt Ag. The drillhole leaves the mineralization open to depth and to the west, east, south and
north.
• Hole TR26-10 – Collared in the southwest portion of the Tombstone as a precollar to test the southwest
AMT anomaly for mineralization. Drilled east-southeast at -80, the drilling progressed quickly to 274.4m
depth. It has one mineralized zone. The intersection is: 112.5-118.6m, 6.1m averaging 0.162 gpt Au and
9.15 gpt Ag. The drillhole leaves the mineralization open to depth and to the west, east, south and north.
• Hole TR26-11 – Collared on the western edge of the central portion of the Contention mineralization. Drilled
at 109 azimuth, -60 to step out the mineralization to the west and to depth. Drilled to 2 50m depth, it has
one mineralized zone: 100.3-200.6m, 100.3m averaging 0.173 gpt Au and 11.46 gpt Ag; The drillhole with
TR26-12 expanded the mineralization 50-70 meters west and similar to depth, and to the south.
• Hole TR26-12 – Collared on the western edge of the central portion of the Contention mineralization. Drilled
at 125 azimuth, -70 to step out the mineralization to the west, south and to depth. Drilled to 237.8m depth,
it has one mineralized zone. The intersections are: 100.3-149.0m, 48.6m averaging 0.172 gpt Au and 18.04
gpt Ag. The drillhole with TR26 -11 expanded the mineralization 50 -70 meters west and similar to depth,
and to the south. The drillhole leaves the mineralization open to depth and to the west, and south.
• Hole TR26-13 – Collared in the central portion of the Westside area, targeting as a fan the mineralization
found in TR25-36. Drilled as a lower angle fan to expand the mineralization to the east and to depth. Drilled
to 219.5m depth, it has four mineralized zones. The intersections are: 18.2-27.4m, 9.1m averaging 0.056
gpt Au and 8.27 gpt Ag; 63.8-68.4m, 4.6m averaging 0. 132 gpt Au and 3.33 gpt Ag; 85.1-91.2m, 6.1m
averaging 0.039 gpt Au and 5.00 gpt Ag, and 194.5-200.6m, 6.1m averaging 0.049 gpt Au and 4.27 gpt Ag.
The drillhole leaves the mineralization open to depth, the west, east, south and north.
• Hole TR26-14 was drilled across the upper portion of the Westside anticline towards the southwest from
north of TC25-03. It encountered multiple zones of oxide mineralization in the Bisbee sediments, from 0 to
10.6m depth for 10.6m averaging 0.195 gpt Au and 13.0 gpt Ag , 39.5m to 147.4m for 107.9m averaging
0.618 gpt Au and 24.8 gpt Ag, 176.3m to 225.0m for 48.6m averaging 0.091 gpt Au and 8.106 gpt Ag and
ending at 234.1m to 243.2m for 9.1m averaging 0.121 gpt Au and 10.17 gpt Ag . TR26-14 demonstrated
that the entire width of the Westside anticline has potential to host oxidized precious metal mineralization
and is open on all sides and to depth.
View drill sections here:
Link to section view hole TR26-01
Link to section view hole TR26-02
Link to section view hole TR26-03
Link to section view hole TR26-04
Link to section view hole TR26-05
Link to section view hole TR26-06
Link to section view hole TR26-07
Link to section view holes TR26-08 and TR26-09
Link to section view hole TR26-10
Link to section view holes TR26-11 and TR26-12
Link to section view hole TR26-13
Link to section view hole TR26-14
Table 1A: Drill Results Currently Reported
Drill Hole From (m) To
(m)
Interval
(m)*
Au
(gpt)
Ag
(gpt) Comments
TR26-01 51.7 74.5 22.8 0.038 11.76 Working 71.4 – 73.0 m no sample
86.6 110.9 24.3 0.039 13.37 Last 4 samples in working, no recovery
TR26-02 0.0 19.8 19.8 0.136 12.62
54.7 60.8 6.1 0.088 13.67
91.2 100.3 9.1 0.094 5.65
130.7 147.4 16.7 0.076 2.76
TR26-03 147.4 161.1 13.7 0.069 3.73
167.2 177.8 10.6 0.103 7.21
193.0 205.2 12.2 0.149 8.7
TR26-04 53.2 63.8 10.6 0.057 8.17
147.4 161.1 13.7 0.040 4.16
168.7 188.5 19.8 0.220 13.75
TR26-05 16.7 36.5 19.8 0.223 8.78
60.8 73.0 12.2 0.117 3.85
80.6 130.7 50.2 0.112 4.90
136.8 158.1 21.3 0.117 11.44
165.7 174.8 9.1 0.086 4.65
182.4 217.4 35.0 0.119 5.95
231.0 255.3 24.3 0.091 3.6 TD in mineralization
Drill Hole From (m) To
(m)
Interval
(m)*
Au
(gpt)
Ag
(gpt) Comments
TR26-06 31.9 47.1 15.2 0.124 4.06
62.3 69.9 7.6 0.223 11.66
88.2 120.1 31.9 0.159 3.86
130.7 158.1 27.4 0.057 29.22
202.2 261.5 59.3 0.104 4.96 TD in mineralization
TR26-07 50.2 162.6 111.5 0.479 12.64 Working 59.3 to 62.3 m
173.2 185.4 12.2 0.127 8.11
221.9 238.6 16.7 0.049 7.49 TD in mineralization
TR26-08 121.6 129.2 7.6 0.576 8.4
TR26-09 35.0 45.6 10.6 0.069 9.06
53.2 59.3 6.1 0.181 13.1
158.1 164.1 6.1 0.041 7.37
TR26-10 PC 112.5 118.6 6.1 0.162 9.15
TR26-11 100.3 200.6 100.3 0.173 11.46
TR26-12 100.3 149.0 48.6 0.172 18.04
TR26-13 18.2 27.4 9.1 0.056 8.27
63.8 68.4 4.6 0.132 3.33
85.1 91.2 6.1 0.039 5.00
194.5 200.6 6.1 0.062 4.275
TR26-14 0.0 10.6 10.6 0.195 13.00
39.5 147.4 107.9 0.618 24.80
176.3 225.0 48.6 0.091 8.11
234.1 243.2 9.1 0.121 10.17 TD in mineralization
The 60 RC drill holes in the current 2025-26 program completed to date primarily are part of a “fan grid pattern”
being drilled in the Contention area since 2020. Most of the RC drill holes are oriented to test for extensions on the
western, eastern borders, the southern extensions, and underneath the north-trending main Contention target zone
which hosts the historic underground and open pit Contention mine. Several RC drill holes tested targets in the
Westside area on projected anticline, dike and fissure vein intersection under mineralized outcrops and historic
shafts. The drill program has continued to identify to depth and horizontally pervasively oxidized and hematite-rich,
silicified hydrothermal breccias composed of quartz feldspar porphyry dike and Bisbee Group clastic sedimentary
fragments, typical of the material mined historically at the Contention Mine.
Additional mineralization types continued to be outlined by the current drilling including: manganese replacements
in limestone beds and skarns, quartz veinlets, oxidized sulfide relicts as disseminations, silicification of altered
hornfels, quartz feldspar porphyries and hydrothermal breccias. For the 2026 program, TR26-03 is the deepest RC
hole drilled, it has an inclination of -80 degrees and was drilled to a depth of 274.4m (270.3 m vertical) remaining in
mineralized and oxidized rocks most of its length.