Blue Star Reports High Grade Surface Samples from the Auma Prospect
Blue Star Reports High Grade Surface
Samples from the Auma Prospect
Vancouver, British Columbia--(Newsfile Corp. - September 10, 2025) -
Blue Star Gold Corp. (TSXV:
BAU) (OTCQB: BAUFF) (FSE: 5WP0) ("Blue Star" or the "Company")
, a leading explorer in
Canada's North announces additional results from the completed Phase I Surface Exploration Program
at its projects located in the High Lake Belt, West Kitikmeot Region of Nunavut (Figure 1). Blue Star's
field-based surface exploration program was initiated in June and completed in July, leaving additional
opportunity for field follow-up after the drill program to advance targets to drill ready status. An update on
the drilling program will be announced in the coming days.
Auma Highlights
Two samples grading over 100 grams per tonne gold (151 & 125 g/t Au) extended the high grade
'Zone 3' an additional 35 metres to the south, for a total strike length of 130 metres which remains
untested by drilling
A total of 133 samples were collected: 33% (44 samples) returned grades over 1 g/t Au, 14% (18)
over 5 g/t
One prospect dubbed "Penny Lane" returned high copper values in addition to high gold values in
quartz veining; one sample (H504682) returned grades of 7.64 g/t Au and 4.2% Cu
Groundwork confirmed quartz veining with anomalous gold is distributed across the Auma
property, with high-grade samples (35.3 g/t Au) as far away as 1.4 km from the original showing
SkyTEM survey: 89-line kilometres of modern EM and magnetics data completed over the
property
"The expanded Auma prospect is a very encouraging addition to our exploration target pipeline," said
Grant Ewing, CEO of Blue Star. "The high-grade gold grabs at surface, along with visible gold and
numerous untested geophysical anomalies, suggest that we may be on the verge of something
significant. Furthermore, the proximity to the proposed road, just 15 kilometres to the east, improves the
accessibility of this project and positions it well for future development. We are looking forward to
advancing this target as part of our 2026 drill program, where we plan to test its full potential."
Plate 1: Typical Vein with Strong Gold Values (left), Penny Lane Anomalous Copper Sample
(centre, right).
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Table 1: 2025 Samples Grading Over 5 g/t Gold and Significant Copper/Silver.
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Discussion of the Auma Field Program
During the 2025 season, Blue Star undertook targeted prospecting, mapping and pXRF
lithogeochemical chip sampling across the Auma property. The areas focused on were defined by
compiled data for the prospect that included mapped vein trends, magnetic anomalies, MaxMin
conductive plate surface traces and historical DIGHEM picks.
Anomalous gold is distributed throughout the Auma property, with high-grade samples collected as far
away as 1.4 km from the original showings (Figure 2). Gold is associated with gossanous, sulphide
bearing quartz veining within the abundant gossans across the property. The gossans are caused by
disseminated pyrrhotite (+/- pyrite) within the mafic volcanic host rocks. Biotite alteration and silicification
associated with the disseminated sulphides occur as an alteration halo around veining. Large
gossanous quartz blocks were commonly found in frost boils. Pyrrhotite, pyrite and chalcopyrite often
occurred within the veining, or at vein selvages.
Several different types of quartz and associated sulphides were noted as described below:
Dark grey to white glassy quartz, sometimes with disseminated pyrrhotite, pyrite and variable
amounts of chalcopyrite throughout
Vuggy white quartz with coarse pyrite agglomerates when fresh; pyrite is commonly weathered-out
leaving rusty staining and large vugs
White to orange to pink sugary quartz and carbonate, and bands of pyrrhotite
Vein selvages, more closely associated with the dark grey quartz are often characterized by
massive tabular to flaky pyrrhotite +/- stringers of chalcopyrite
The pyrrhotite found in alteration halos, selvages and the veins themselves is likely the cause of
magnetic and electromagnetic anomalies noted in the historical ground magnetic and MaxMin surveys.
In one distinct area, located 1.2 km southwest of the original gold showing, chalcopyrite was identified
within white quartz veining. This area, now called the Penny Lane prospect returned strong copper and
gold values with elevated silver content (see Table 1). A second area, located 300 metres along strike to
the south, also returned anomalous copper values associated with both massive sulphides in mafic
volcanic host rocks and quartz veining (Figure 2).
In addition to groundwork, Blue Star contracted SkyTEM to fly a heliborne electromagnetic & magnetic
survey over the Auma claim block. The survey consisted of 89-line kilometres covering 614 hectares.
The results for this survey are pending.
Next Steps
The 2025 field season was very successful at expanding the extent of known high-grade gold veining
across the Auma property and identifying new areas of anomalous gold and copper mineralisation. The
lithogeochemical chip sampling results combined with our knowledge of the Ulu stratigraphy and the new
magnetics survey data will be used to generate a revised geological map and targeting model for the
Auma prospect. Based on the historical work Auma was drill ready in 2025, and the additional field work
and data compilation has led to more compelling drill targets across the property. Auma is expected to
be a key component of a robust 2026 exploration drill program.
Sampling, Assaying & QA/QC
Blue Star field programs collect a variety of samples; prospecting rock samples are selective by nature,
channel samples are saw cut samples from outcrop intended to be representative of the exposed
mineralisation, and drill core samples are sawn in half with one half retained as core record and the other
half submitted for analysis.
Blue Star samples are delivered under chain of custody to ALS Geochemistry in Yellowknife, NT for
sample preparation which are then forwarded to ALS Canada Inc. in North Vancouver, BC for final
analysis. Samples are prepared using code PREP-31 (crushing and pulverising) and analysed using
codes Au-AA26 (50-gram fire assay with atomic absorption finish) and ME-MS61 (48 element four acid
digestion with ICP-MS finish). Samples returning > 10 g/t Au are reanalysed under code Au-GRA22 (50-
gram fire assay with gravimetric finish). Over limits for non-gold elements are ore grade four acid
digestion with ICP-AES finish. The work is being conducted using industry standard procedures,
including a quality assurance and quality control("QA/QC") program consisting of the insertion of
certified standards, blanks and duplicates into the sample stream.
Qualified Person
Darren Lindsay, P. Geo. and Vice President Exploration for Blue Star, is a Qualified Person under
National Instrument 43-101 ("NI 43-101") and has reviewed and approved the technical information
contained in this news release.
Figure 1: Location Map of Blue Star Projects and Landholdings.
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Figure 2: 2025 Sample Locations with Gold Grades on the Auma Property.
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About Blue Star Gold Corp.
Blue Star is a mineral exploration and development company focused in Nunavut, Canada. Blue Star's
landholdings total 300 square kilometres of highly prospective and underexplored mineral properties in
the High Lake Greenstone Belt. The Company owns the Ulu Gold Project, comprised of the Ulu Mining
Lease and Hood River Property, and the Roma Project. A significant high-grade gold resource exists at
the Flood Zone deposit (Ulu Mining Lease), and numerous high-potential exploration targets (gold and
critical minerals) occur throughout the Company's extensive landholdings, providing Blue Star with
excellent resource growth potential. The site of the future deep-water port at Grays Bay is 40 - 100 km to
the north of the properties, and the proposed route corridor for the all-weather Grays Bay Road passes
close by the Roma and Ulu Gold Projects.
Blue Star is listed on the TSX Venture Exchange under the symbol: BAU, the U.S. OTCQB Venture
Market under the symbol: BAUFF, and on the Frankfurt Exchange under the symbol: 5WP0. For
information on the Company and its projects, please visit our website:
www.bluestargold.ca
.
For further information, please contact:
Grant Ewing, P. Geo., CEO
Telephone: +1 778-379-1433
Email:
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.
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