Canstar Commences Trench Program at Mary March, Multiple Targets Include New 1.2 km IP Chargeability Trend; Reports >$1M in Warrants Exercised, Expanded Land Package and Team
Canstar Commences Trench Program at Mary
March, Multiple Targets Include New 1.2 km IP
Chargeability Trend; Reports >$1M in
Warrants Exercised, Expanded Land Package
and Team
Toronto, Ontario--(Newsfile Corp. - September 22, 2025) - Canstar Resources Inc. (TSXV: ROX)
("Canstar" or the "Company") reports that field work at the Mary March Project (Figure 1) in central
Newfoundland is accelerating, with a trenching program underway to investigate newly defined induced-
polarization ("IP") chargeability trends, including an untested
~1.2 km long anomaly generated from
the Company's geophysics compilation
and located 550 metres north of the historic discovery area.
Trench excavation began in early September and will be completed before the end of the month, weather
permitting. The detailed trench mapping will aid in developing a 3D geological model to generate new
drill targets.
Initial field findings include mineralized float rock samples in the trench corridor reading up to
4%
copper ("Cu")
via portable X-ray fluorescent analyzer ("pXRF").
1
The company expanded its claims in the vicinity of the ~1.2 km IP anomaly and added personnel to the
field team. The company has also completed the deep IP Survey (in partnership with Canterra Minerals
Corporation) over the Buchans project, with interpretation to follow soon.
JV Technical lead Dr. Harold Gibson commented: "Our geology-first approach is doing exactly what we
set out to do—convert historical datasets into clear, testable targets. New compilation and analysis of
historical geophysical data identified multiple chargeability trends, including a ~1.2 km corridor that
we're now trenching. We're moving quickly to establish new, geologically constrained drill targets in this
established mining district."
Highlights
Exploring a new, large IP target:
A previously untested ~1.2 km long IP chargeability anomaly
has been delineated 550 metres north of the historic discovery area from 2014 DCIP ("Direct
Current Induced Polarization") data; two trenches are allocated to this anomaly for initial evaluation.
IP confirmed as an effective tool or method works at Mary March:
A third-party review by
Hardrock Geophysics confirms
DCIP is the most effective geophysical method
at Mary March
here (being less susceptible to interference from powerlines and the lake than other methods), with
chargeability highs correlating to sulphides and known mineralization; data from six pole-dipole
lines were inverted (with a depth sensitivity to ~100 m).
Building an integrated geophysical model:
Chargeability highs coincide locally with gravity
highs and sit within a magnetic low "wedge" bounded by east-west faults—now the core structural
corridor for target ranking.
Where chargeability highs coincide with gravity highs, the Company will
prioritize targets and is planning an orientation ground gravity grid to refine density vectors.
Program is gaining momentum, 11 trenches underway with an expanded team
: The
Company has hired an additional geologist and two field assistants to expand the field crew, who
have begun to clear and excavate a total of ~860 m of new exposure over chargeability highs to
verify host stratigraphy and thrust panels in the area of a magnetic-low, and collect continuous
channel samples to calibrate the IP responses for drill targeting. All 11 trench locations have been
flagged, marked and cleared of trees; 6 of 11 trenches have been fully excavated. Re-logging of
drill holes continues to piece together the stratigraphy, helping to define thrust panels and targets
within panels.
Historic high-grade context:
The Mary March discovery hole (1999), shown in Figure 2,
intersected 9.63 m at 240 m vertical depth—
assaying 0.64% Cu, 4.2 g/t Au and 122 g/t Ag,
plus 10.1% Zn and 1.8% Pb
—demonstrating the camp's potential.
2
Surface prospectivity:
Canstar 2019 channel and grab samples from the debris flow occurrence
(Figure 2) returned up to
5.7% Cu, 1.2 g/t Au and 29.4 g/t Ag
.
Strategic claim additions:
The Company has signed two option agreements for third-party
licenses within the Mary March footprint, expanding coverage of the ~1.2 km IP anomaly and
adding 625 ha to its land position.
New datasets:
A property-wide LiDAR survey has been completed and will assist outcrop
detection and structural mapping.
Early warrant exercise exceeds $1M
3
: Since June 2025, the Company has received an
additional $482,093 in warrants exercised early, bringing the total number of warrants exercised to
21.85M of the ~26.7M issued as part of the January 2024 private placement, for total proceeds of
$1,092,500.
Figure 1: Overview of Canstar's Buchans & Mary March Land Packages
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1665/267322_2f8eafa3b429b86f_001full.jpg
Figure 2: Canstar's Mary March Exploration Targets Include New 1.2km Chargeability Anomaly
+ Multiple Occurrences of High-Grade Mineralization
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/1665/267322_2f8eafa3b429b86f_002full.jpg
Mary March Target Snapshot
Mary March Historic Intercept 9.63 m grading
(0.64% Cu,
4.2 g/t Au, 122 g/t Ag
, 10.1% Zn,
1.8% Pb) at ~240 m vertical depth; chargeability and low-resistivity trends align with this area.
Nancy April (Stockwork)
— Broad footwall stockwork in drilling and a
shallow 600 m × 60 m
chargeability high
with coincident gravity; trenching will refine structure prior to drill layout.
Nancy April North
—
Chargeability + gravity
lead over a ~22 ha area, no outcrop; trenches
planned to determine bedrock source.
2019 Debris Flow
— Trenching in 2019 revealed surface clasts up to 5.7% Cu,
1.2 g/t Au, 29.4
g/t Ag
with a modeled anomaly at ~200 m depth; requires ground geophysics to elevate to drill-
ready.
Millertown Gossan
— ~200 m long pyritic gossan on the shoreline of Beothuk Lake; mapping
and channel sampling are the next steps.
Near-Term Next Steps
Complete core re-logging, trenching, washing, mapping and channel sampling; submit assays.
Run orientation ground gravity over top chargeability highs; expand if encouraging.
Extend DCIP coverage and consider deeper-penetration DCIP across Tier-1 trends.
Progress borehole geophysics scoping and contractor bids ahead of freeze-up, to optimize
drillhole orientation before drilling commences.
Commenting on the progress, Canstar's President & CEO, Juan Carlos Giron Jr., said, "This program
highlights the combination of technical excellence and speed of execution that defines our work at Mary
March. Dr. Gibson and the team have systematically converted historical data into multiple new targets
and advanced them rapidly through trenching and 3D modeling. We are excited by the quality of the
targets, the prospectivity of the district, and the pace at which we are moving toward a high-confidence
drill campaign."
Acknowledgement
Canstar acknowledges the financial support of the Junior Exploration Assistance (JEA) Program from
the Government of Newfoundland and Labrador Department of Industry, Energy and Technology, which
has been a valuable contribution to the exploration programs on the Company's Buchans-Mary March
and Golden Baie projects.
About Canstar Resources
Canstar Resources Inc. (TSXV: ROX) is an exploration company focused on critical minerals and gold in
Newfoundland. The Company's 100%-owned Golden Baie Project (489.5 km
2
) hosts high-grade gold
and antimony showings along a major mineralized structure that also hosts a large number of gold
deposits. The Buchans and Mary March projects (122.5 km
2
) are located within the world-class, past-
producing VMS zinc-, copper-, and silver-rich Buchans Mining Camp and boast high-grade zinc and
copper discoveries.
For further information Contact
Juan Carlos Giron, Jr.
President & Chief Executive Officer
Email:
Phone: (647) 557-3442
Website:
www.canstarresources.com
Notes
1
.
pXRF readings are screening-level only and are not a substitute for assaying; reported 4% Cu float readings are preliminary and may not
reflect in-situ grades. The pXRF model used is a V2MR Vanta Max from Evident Scientific, calibrated at the factory and monitored for
accuracy using three certified reference materials.
2
.
Reported by Phelps Dodge in 1999 : 9.63 metres grading 4.2 g/t gold, 122 g/t silver, 10.1% zinc, 1.8% lead, and 0.64% copper
3
.
All dollar amounts are in Canadian dollars unless otherwise noted
Neither 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.
Forward Looking Statements
This News Release includes certain "forward-looking statements" which are not comprised of historical
facts. Forward looking statements include estimates and statements that describe the Company's future
plans, objectives or goals, including words to the effect that the Company or management expects a
stated condition or result to occur. Forward looking statements may be identified by such terms as
"believes", "anticipates", "expects", "estimates", "may", "could", "would", "will", or "plan". Since forward-
looking statements are based on assumptions and address future events and conditions, by their very
nature they involve inherent risks and uncertainties. Although these statements are based on information
currently available to the Company, the Company provides no assurance that actual results will meet
management's expectations. Risks, uncertainties and other factors involved with forward-looking
information could cause actual events, results, performance, prospects and opportunities to differ
materially from those expressed or implied by such forward-looking information. Forward looking
information in this news release includes, but is not limited to, the Company's objectives, goals or future
plans, statements, exploration results, potential mineralization, the estimation of mineral resources,
exploration and mine development plans, timing of the commencement of operations and estimates of
market conditions. Factors that could cause actual results to differ materially from such forward-looking
information include, but are not limited to failure to identify mineral resources, failure to convert estimated
mineral resources to reserves, the inability to complete a feasibility study which recommends a
production decision, the preliminary nature of metallurgical test results, delays in obtaining or failures to
obtain required governmental, environmental or other project approvals, political risks, inability to fulfill
the duty to accommodate First Nations and other indigenous peoples, uncertainties relating to the
availability and costs of financing needed in the future, changes in equity markets, inflation, changes in
exchange rates, fluctuations in commodity prices, delays in the development of projects, capital and
operating costs varying significantly from estimates and the other risks involved in the mineral
exploration and development industry, including but not limited to the price of commodities, capital
market conditions, restriction on labour and international travel and supply chains, and those risks set out
in the Company's public documents filed on SEDAR. Although the Company believes that the
assumptions and factors used in preparing the forward-looking information in this news release are
reasonable, undue reliance should not be placed on such information, which only applies as of the date
of this news release, and no assurance can be given that such events will occur in the disclosed time
frames or at all. The Company disclaims any intention or obligation to update or revise any forward-
looking information, whether as a result of new information, future events or otherwise, other than as
required by law.
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