Tectonic Metals Announces Virtual Drill Core Shack and Completion of Phase One Drill Program at Flat Gold Project 7,718 Metres Drilled Across 48 Diamond and RC Drill Holes
1
Tectonic Metals Announces Virtual Drill Core Shack and Completion of
Phase One Drill Program at Flat Gold Project
7,718 Metres Drilled Across 48 Diamond and RC Drill Holes
VANCOUVER, B.C., September 2, 2025 – Tectonic Metals Inc. (“Tectonic” or the “Company”) (TSX-V: TECT;
OTCQB: TETOF) today announced the successful completion of its 2025 Phase One drill program at the
Company’s flagship Flat Gold Project (“Flat”) in southwestern Alaska. Together with the upcoming and fully
funded Phase Two drill program, the 2025 drilling campaign represents the largest and most comprehensive
ever undertaken at Flat, establishing a new benchmark for exploration activity on the property and far
surpassing all previous campaigns in both scope and intensity.
As part of the Phase One drill program, a total of 7,718 metres were drilled across 48 holes using both core
and reverse circulation (“RC”) drilling methods. Phase One drilling targeted multiple intrusion-related gold
systems, including Alpha Bowl, the majority of the drilled metres, as well as Chicken Mountain, Golden
Apex, Black Creek and Jam. Complementing the drilling, Tectonic also completed a 2,125 line-kilometre
high-resolution drone airborne magnetic survey , providing the first modern coverage of all six priority ,
district-scale intrusive targets at Flat.
Drill samples are being processed at accredited analytical facilities, with assay results to be reported as they
become available.
Tectonic’s First-Ever Virtual Drill Core Shack
In response to the interest in the 2025 exploration campaign, Tectonic is pleased to host its inaugural
“Virtual Drill Core Shack,” an open webcast a ccessible to all interested parties. The event is designed to
replicate the experience of an analyst site visit, offering participants an informal, technical-only discussion
of the rocks and drill core observations from the 2025 Phase One drill program at Flat.
During the webcast, Tectonic’s Technical Team will showcase photographs of drill core highlights and
discuss key geological observations i n an interactive format . The presentation materials that will be
referenced during the webcast can be accessed in advance HERE.
The webcast will take place on Thursday September 4, 2025, at 07:00 AM Pacific Time, 08:00 AM Mountain
Time and 10:00 AM Eastern Time.
To register for access to the Virtual Drill Core Shack, please use this link:
https://us06web.zoom.us/meeting/register/O_pelracTliDVW4hgRQhMg
Tony Reda, Co-Founder, President & CEO of Tectonic Metals, commented:
“What began as a $7 million financing for Phase One drilling in May 2025 quickly expanded into an 85%
oversubscribed $12.7 million raise, giving us the foundation to execute a three-rig, Phase One drill program
in record time. While assays are still pending, I am proud to report that every single Phase One objective has
been successfully achieved. This disciplined execution not only validates our approach but also sets the stage
for Phase Two and introduces a new Company objective — the delivery of Tectonic’s first -ever maiden
inferred resource. This will be supported by the 2025 and next year’s drilling, as we continue to systematically
2
de-risk Flat on its path toward potential development.”
2025 Phase One Drill Program Highlights:
• Tectonic successfully delivers on every objective set out at the start of the 2025 Phase One drill
program (see Tectonic News Release June 02, 2025), advancing Alpha Bowl, Chicken Mountain,
Golden Apex, and for the first time, testing Black Creek and Jam, two new district-scale intrusion
targets.
• Drill plan maps and select core photo can be viewed HERE.
Alpha Bowl
• Drilling tested for scale, grade and continuity
• Oriented drill core collected; structural and alteration controls being defined
• Key drill core observations:
o Visible gold observed in a number of quartz veins
o Multiple generations of veining, including sheeted, brecciated and late -stage carbonate
veins
o Clear structural overprinting (cross-cutting veins, brecciation, faulting)
o Strong sericite (potassic) alteration halos associated with mineralized veins
Chicken Mountain
• Metallurgy: 660 metres, in 4 holes, core drilled for additional heap leach column tests, including
2” crushed material ; complements prior heap leach recoveries of 96% and 91% on 3/4“crushed
material.
• Oriented drill core collected : Oriented drill core collected for ongoing refinement of the structural
model
• Potential starter pits: near surface, higher-grade mineralized corridors drill tested
• Key drill core observations:
o Widespread sheeted quartz and quartz-carbonate-sulfide veining
o Strong pervasive sericite alteration overprinting the quartz monzonite host
o Observed structural complexity with multiple vein generations and late-stage faulting
o Intervals of oxidation with iron-oxide staining
Golden Apex
• Step-out core drilling completed near historic 2003 drill hole GA03-02
• Stratigraphy logged; oriented core collected for structural analysis
• Portable XRF analysis confirms bi-modal pathfinder associations (Cu+Bi and As+W)
• Key drill core observations:
o Alteration associated with intense fracturing and abundant veining
o Observed sulfide mineral assemblages include chalcopyrite, arsenopyrite, pyrrhotite and
pyrite.
Geophysics
• High resolution drone magnetics survey completed – a proven and critical tool for targeting blind
intrusion systems at Flat. Data interpretation ongoing, will be utilised in Phase 2 and 2026 drill
programs.
3
Looking Ahead
• Phase Two drilling will advance Chicken Mountain towards a maiden inferred mineral resource
estimate, follow up drilling at Alpha Bowl and potentially unlock other intrusion targets.
• Phase Two drilling has commenced and a dedicated Phase Two program news release will be issued
in the coming weeks.
Table 1. Summary of Phase One 2025 drilling by target area and drill type.
Intrusion Target Drill Type # Holes Metres
Alpha Bowl Diamond 8 2,873
RC 16 1,749
Chicken Mountain Diamond 5 1,013
RC 5 798
Golden Apex Diamond 1 265
RC 2 201
Black Creek RC 9 616
Jam RC 2 203
Total Drill Holes & Metres 48 7,718
Alpha Bowl Intrusion Target – Phase One Drilling
The Alpha Bowl target, interpreted as a potential large, reduced intrusion-related sheeted quartz vein gold
system (“RIRGS”), was the principal focus of Tectonic’s 2025 Phase One drill program. Drilling followed up
on the Company’s 2024 discovery, which identified bedrock gold-bearing zones beneath surficial cover and
within areas historically disturbed by placer mining (see Tectonic news release, March 3, 2025).
Phase One drilling at Alpha Bowl totalled approximately 4,600 m across 24 drill holes, utilizing both diamond
core and RC drill methods. The program tested an area measuring roughly 600 m by 700 m, with drill fences
arranged in parallel lines spaced approximately 100 m apart. Drilling specifically targeted sheeted quartz
vein systems developed within granitoid intrusions — a hallmark setting of reduced intrusion-related gold
systems. Diamond drill holes were completed to maximum depths of up to 392 m.
Alpha Bowl Rock Types
The rocks at Alpha Bowl are mainly coarse -grained monzonite to syeno -monzonite intrusions, which
sometimes contain xenoliths of dark fragments of other rock types. Narrow dikes of varying composition
cut through the main intrusive bodies. Tectonic observed multiple generations of mineralized quartz and
carbonate veins in all logged rock types, indicating the system was long-lived and repeatedly active.
Vein Types and Potential Mineralization Indicators
Drilling has revealed three main types of potentially gold-related veins:
1) Sheeted quartz-sulfide veins – closely spaced, consistently oriented veins of quartz with sulfides
(chalcopyrite, pyrrhotite, arsenopyrite, molybdenum) and occasionally visible gold.
4
2) Quartz-carbonate-arsenopyrite veins – larger veins with alteration halos (sericite, carbonate,
arsenopyrite) that can appear brecciated (broken and resealed). These veins are chemically distinct,
marked by arsenic, antimony, mercury, tungsten and molybdenum. They often align with the finer-
grained dikes, suggesting repeated pulses of mineralizing fluids.
3) Arsenopyrite stringers – zones dominated by arsenopyrite occurring as dense networks of fine - to
coarse-grained veins.
Later generations of calcite-rich veins cut across all three of these earlier vein types, occasionally showing
oxidation and secondary copper minerals (like chalcocite and copper oxides).
Geological Significance
The presence of multiple cross-cutting vein types in drill core indicates that the Alpha Bowl system displays
multiple fluid phases and was active over an extended period, with early high -temperature mineral
assemblages subsequently overprinted by later, lower -temperature mineralization. This telescoping of
mineralizing events is a recognized feature of intrusion-related gold systems and highlights that Alpha Bowl
possesses key attributes of a large, long -lived mineralizing environment. In addition, the observation of
repeated “crack -and-seal” textures within quartz –carbonate veins confirms that mineralizing fluids
circulated through the system in multiple pulses.
Chicken Mountain Intrusion Target – Phase One Drilling
The Chicken Mountain intrusion is interpreted to be roughly 6.5 km x 6.0 km in size and currently the most
advanced target at Flat. Chicken Mountain has been the focus of past drilling on the property. During Phase
One 2025, Tectonic completed 1,013 m of core drilling in five holes and 798 m of RC drilling in five holes.
The program was designed to test for potential extensions of known mineralization in the underexplored
northern and eastern portions of the target. In addition, 660 m of core drilling in four holes was completed
as infill within areas of established quartz monzonite–hosted mineralization as a continuation of Tectonic’s
metallurgical testwork. Objectives included the collection of oriented PQ core for structural analysis and
metallurgical sampling. Of this, 450 m was drilled as PQ -sized core, providing 2-inch diameter material for
coarser crush column testing to advance heap leach metallurgical studies.
Drilling intersected variably altered and oxidized quartz monzonite hosting varying densities of planar
sheeted quartz, quartz–carbonate, and quartz–carbonate–sulfide veins (arsenopyrite + pyrite, locally with
stibnite), together with oxidized vein assemblages. These features are consistent with the previously
observed multi-phase intrusion-related gold system documented at Chicken Mountain.
Golden Apex Intrusion Target – Phase One Drilling
The Golden Apex target is interpreted to be a ~2.5 km x 2.5 km blind reduced intrusion-related gold system
(RIRGS) situated some 3000 metres to the northeast of Chicken Mountain, offset between the Alpha Bowl
target to the south and the exposed Black Creek stock to the north. Drilling completed at Golden Apex in
2025 totals 470 m, comprising 269 m from one core hole and 201 m from two RC holes. The RC holes were
drilled northeast of Alpha Bowl to evaluate a possible eastward offset of the Alpha Bowl intrusion along the
right-lateral Golden Apex Fault.
Core hole CMD25-006 was drilled as a 65 m eastward offset from historic hole GA03-02, which intersected
5
multiple gold-bearing intervals within intermediate volcanic rocks (see Tectonic News Release, September
5, 2024). The objectives of CMD25-006 were to refine the geometry of the host volcanic stratigraphy, assess
strike and depth extent of mineralization, and collect structural data from oriented core to guide future
drilling. The hole intersected predominantly fine-grained, dark massive volcanic rocks characterized by fine
plagioclase and altered pyroxene phenocrysts.
Veining is extensive and erratic, occurring as fine carbonate stringers and fracture fill, with localized zones
of quartz and quartz –carbonate–sulfide stringers. Bleaching of the volcanic host is commonly associated
with zones of increased density of veining. Sulfide minerals identified include chalcopyrite, arsenopyrite,
pyrrhotite, and pyrite. Portable handheld XRF analysis of sulfide -bearing vein material indicates a bimodal
elemental association, with Cu + Bi and As + W as dominant pairings.
Black Creek Intrusion Target – Phase One Drilling
The Black Creek stock hosts multiple mineralization styles, including monzonite -hosted RIRGS
mineralization within the main intrusive body and vein -style mineralization developed along its margins,
where gabbro/monzodiorite phases intrude Kuskokwim sediments and associated hornfels.
As part of the 2025 Phase One drill program, Tectonic drilled 616m in nine RC holes along a 300 m fence
across the eastern margin of the stock. This drilling was designed to test the hornfels and vein -hosted
mineralization adjacent to marginal intrusion phases. The fence was positioned approximately 50 m south
of historic hole F79-02 (which intersected 73.76 m grading 0.72 g/t Au) to specifically evaluate hornfels to
the east of the historic hole, as well as gabbro/monzodiorite phases to the west.
Drilling in 2025 intersected highly oxidized, hornfelsed Kuskokwim sediments with felsic dykes across the
first ~175 m of strike, transitioning into the expected mafic intrusive phases over the final ~125 m of the
fence.
Jam Intrusion Target – Phase One Drilling
The Jam target represents one of six RIRGS targets currently being evaluated at Flat. During the 2025 Phase
One drill program , two RC holes were drilled from a single pad , totalling 203 metres. The program was
designed to test both the northern extension of an historically mined high-grade, narrow quartz vein hosted
in augite basalt (previously accessed by shallow shafts and adits), as well as the potential presence of a felsic
intrusion interpreted to underlie the Jam area.
The two holes were drilled to vertical depths of up to 95 m, with both intersecting variably oxidized, altered,
and veined augite basalt throughout. Within the unoxidized sections, chip logging observed sulfide
assemblages comprising arsenopyrite, pyrite and chalcopyrite.
While the targeted felsic intrusion was not intersected, the pervasive veining and alteration observed in
drilling is considered highly suggestive of a local intrusive source at depth.
High Resolution Drone Magnetics Survey Completed – Critical Tool for Targeting at Flat
As part of the 2025 Phase One drill program , Tectonic completed a 2,125 line -kilometre high-resolution
drone magnetic survey across prospective lithological assemblages of the Flat volcano -plutonic complex.
Final processed data magnetic maps have been received, with 3D inversion model ling expected in the
coming weeks.
6
This survey provides the first modern district-scale magnetic coverage of Flat, designed to define intrusions,
alteration zones, and structural corridors that may control gold mineralization. The results will refine drill
targeting, generate new prospects, and accelerate discovery across the ~99,000-acre project.
To Learn More About Tectonic Metals:
▪ Visit: TectonicMetals.com/about/
▪ Subscribe to our email list
▪ View our Fact Sheet or Corporate Presentation
▪ Take a virtual tour of our Flat Gold Project with both the CEO of Tectonic and one of Alaska’s largest for-
profit Native Regional Corporations, Doyon Ltd.
To Be A Part Of “The Shift,” Follow Us On Social Media:
X
YouTube
Qualified Person
Tectonic Metals’ disclosure of technical or scientific information in this press release has been reviewed,
verified and approved by Peter Kleespies, M.Sc., P.Geo., Vice President of Exploration, who is a Qualified
Person in accordance with Canadian regulatory requirements set out in National Instrument 43-101.
On behalf of Tectonic Metals Inc.,
Tony Reda
President and Chief Executive Officer
For further information about Tectonic Metals Inc. or this news release, please visit our website at
www.tectonicmetals.com or contact Tectonic Investor Relations, toll-free at 1.888.685.8558 or by email at
7
Cautionary Note Regarding Forward-Looking Statements, Historical Information and Visual Observations
This news release contains “forward -looking statements” and “forward -looking information” (collectively, “forward -
looking statements”) within the meaning of applicable Canadian securities laws. All statements herein that are not
statements of historical fact may be deemed to be forward-looking statements. Forward-looking statements are often,
but not always, identified by words such as “may,” “will,” “should,” “anticipate,” “believe,” “expect,” “intend,” “plan,”
“estimate,” “potential,” “target,” or similar terminology, or that events or conditions “may” or “will” occur.
Forward-looking statements in this release include, but are not limited to, statements regarding: the potential for
mineralization at Tectonic’s projects; the nature, scope, and timing of future exploration activities; the interpretation
of geological observations; the possible size or scale of mineralized systems; the receipt of regulatory approvals,; and
the anticipated benefits of current and future exploration programs.
This release also refers to historical information, including results from past exploration activities and placer
production figures. Such historical information has not been independently verified by Tectonic, may not be reliable,
and should not be relied upon as current, NI 43-101 compliant data.
In addition, this release contains core photographs, geological notes, and descriptive observations such as alteration
styles, mineralogy and presence of visible gold. These observations are preliminary in nature, may not be
representative of the entire interval or system, and should not be relied upon as a guarantee of mineralized assay
results or as the basis for any investment decision. Investors and readers are cautioned that visual estimates, core
photographs, and geological descriptions are not substi tutes for accredited laboratory assay results and do not
demonstrate the economic viability of any mineral deposit.
Forward-looking statements are not guarantees of future performance. They are based on a number of assumptions
made as of the date such statements are provided, including, among others: assumptions regarding future gold and
other metal prices; currency exchange and interest rates; favourable operating and political conditions; timely receipt
of permits and regulatory approvals; availability of labour, equipment, and services; stability of financial and capital
markets; availability of financing on acceptabl e terms; accuracy of exploration data and geological models; and the
ability to successfully advance planned exploration programs. Many of these assumptions are beyond the control of
Tectonic and may prove to be incorrect.
Forward-looking statements are subject to known and unknown risks, uncertainties, and other factors that may cause
actual results, performance, or achievements to differ materially from those expressed or implied. These risks include,
without limitation: risks inherent to mineral exploration and development; volatility of commodity prices; changes in
laws, regulations, and policies; delays or inability to obtain required approvals and permits; availability of financing;
general economic, political, and mark et conditions; labour disputes and shortages; equipment and supply risks;
environmental and social risks; competition; inaccuracies in exploration results or geological interpretations; and other
risks detailed from time to time in the Company’s continuous disclosure filings.
Although management believes the expectations expressed in such forward -looking statements are reasonable as of
the date made, there can be no assurance they will prove to be correct. Readers are cautioned not to place undue
reliance on forward -looking statements, historical information, or preliminary visual geological observations. Actual
results and future events may differ materially from those anticipated. All forward -looking statements contained in
this news release are expressly qualified by this cau tionary statement. Tectonic disclaims any intention or obligation
to update or revise forward-looking statements, whether as a result of new information, future events, or otherwise,
except as required by applicable securities laws.
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the
TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.