Fireweed Intersects Sulphide Mineralization at Boundary Zone Muon Targets
Fireweed Intersects Sulphide Mineralization at
Boundary Zone Muon Targets
TSXV: FWZ
OTCQX: FWEDF
FSE: M0G
VANCOUVER, BC
,
July 30, 2025
/CNW/ - Fireweed Metals Corp. ("
Fireweed
" or the "
Company
")
(TSXV: FWZ) (OTCQX: FWEDF) is pleased to report the results of the first drill holes from
Boundary Zone targeting anomalies generated from the muon tomography survey as part of the
2025 drill campaign at its Macpass Project ("Macpass"),
Yukon, Canada
.
Highlights
Hole NB25-004 from 202.60 metres ("m") downhole:
4.40 m
of 9.35% Zinc ("Zn"), 1.38%
lead ("Pb"), and 21.2 g/t silver ("Ag"), including
1.20 m
of 23.44% Zn, 4.15% Pb, and 55.8 g/t
Ag, and
35.34 m
of 3.39% Zn, including
7.97 m
of 8.00% Zn and 4.1 g/t Ag, and
4.31 m
of
3.86% Zn and 12.3 g/t Ag
Hole NB25-002 from
200.85 m
downhole
:
21.72 m
of 3.71% Zn and 4.2 g/t Ag, including
7.48
m
of 4.83% Zn and 3.2 g/t Ag; and
7.44 m
of 3.80% Zn and 8.3 g/t Ag; and
7.44 m
of 3.80%
Zn and 8.3 g/t Ag
Significant concentrations of germanium and gallium are associated with sphalerite
mineralization (included within the full results in Table 1).
CEO Statement
Ian Gibbs
, President and CEO, stated, "The successful intersection of sulphide mineralization within
targets generated from the 2024 muon tomography survey confirms the effective use of this
exploration technique in the Macpass District. Our 2025 drilling confirms the density signatures
generated from the survey correspond to mineralization, alteration, or denser rock types. Supported
by Digital Supercluster funding, we've seen significant savings on both the deployment of the muon
tomography survey in 2024 as well as the follow-up drilling at these targets this field season. The
use of multiphysics to delineate and refine targets continues to highlight Fireweed as an award-
winning pioneer of emerging technologies in the exploration space and we are excited to leverage
this new technique in the future."
Summary
The drill holes in this release primarily comprise intervals of semi-massive zinc, lead, silver sulphide
mineralization (in the form of sphalerite and galena) and vein, replacement, and breccia style
mineralization from the northern and eastern Boundary Zone areas as successful step-outs from the
Boundary Zone Mineral Resource Estimate
1
(MRE). Semi-massive sulphides were intersected the
eastern end of the deposit along strike of massive sulphide mineralization present in the Boundary
Zone Prime Zone (BZPZ) in addition to vein and replacement style mineralization which explain the
density anomalies generated from the muon tomography survey. One hole drilled into an anomaly in
the northern Boundary Zone area was successful in intersecting vein and replacement mineralization,
as well as significant intervals of siderite (iron carbonate alteration) that explain the density
anomalies generated in this area. In the southern area of Boundary Zone one hole was drilled into
dense rocks of the Vampire formation—a lithology not mapped in this area which is denser than the
predicted lithology. Collectively, all holes drilled to completion targeting anomalies generated from
the muon tomography have been explained satisfactorily. The muon tomography survey conducted in
partnership with Ideon Technologies has performed well in imaging the estimated densities of the
Boundary Zone MRE.
Results
Hole NB25-004 was successful in intersecting a narrow expression of the stratiform to massive
sulphide mineralization associated with the Boundary Zone Prime Zone. The remaining holes (NB25-
003 and NB25-005) completed as step-outs to the eastern extent of the MRE were successful in
intersecting various packages of replacement, vein, and breccia style zinc mineralization. In the
north, NB25-002 intersected vein and replacement style mineralization. All mineralized intercepts are
beyond the limits of the 2024 MRE
1
.
On the north side of Boundary zone, NB25-002 intersected vein, breccia, and massive sulphide
mineralization within stratigraphy while targeting a potential fold structure. Bedding orientations
indicate a fold structure is present around the target area.
Summaries of the intersections from these holes discussed above are as follows:
NB24-004
Intersected
4.40 m
of stratiform to massive sulphide mineralization grading 9.35% Zn,
1.38% Pb, and 21.2 g/t Ag, including
1.20 m
of 23.44% Zn, 4.15% Pb, and 55.8 g/t Ag
Intersected
35.34 m
of vein, breccia, and replacement sulphide mineralization grading
3.39% Zn and 2.2 g/t Ag, including
7.97 m
of 8.00% Zn and 4.1 g/t Ag; and
4.31 m
of
3.86% Zn and 12.3 g/t Ag
NB25-002
Intersected
21.72 m
of vein, breccia, and replacement sulphide mineralization grading
3.71% Zn and 4.2 g/t Ag, including
7.48 m
of 4.83% Zn and 3.2 g/t Ag; and
7.44 m
of
3.80% Zn and 8.3 g/t Ag; and
13.50 m
of 2.37% Zn and 2.5 g/t Ag; and
6.90 m
of 2.28%
Zn and 8.7 g/t Ag; and
3.59 m
of 3.16% Zn and 5.4 g/t Ag.
NB25-003
Intersected
11.84 m
of vein, breccia, and replacement sulphide mineralization grading
1.58% Zn and 3.4 g/t Ag; and
6.62 m
of 1.70% Zn and 2.2 g/t Ag
NB25-005
Intersected
3.14 m
of vein, breccia, and replacement style mineralization grading 5.62%
Zn, and 4.3 g/t Ag
See Tables
1 and 2, Cross Sections AA–AA', AB–AB', Long Section M–M' and Map 2 below for
further details.
The holes in this release are step out holes testing density anomalies generated from a muon
tomography survey and consist of vein, breccia, replacement, and stratiform to massive sulphides at
Boundary Zone. Four holes (NB25-002, NB25-003, NB25-004, and NB25-005) contain mineralized
intercepts within the density targets whereas NB25-006 intersected dense but not mineralized rocks
of the Vampire Formation. NB25-001 was abandoned due to ground conditions and re-drilled as
NB25-002.
Regional exploration hole MP25-001 was drilled 1.5 km west of End Zone, it did not intersect
significant mineralization; it is also included within Table 2: 2024 Drilling Summary.
Drill Program Update
Currently Fireweed Metals have five drill rigs active across the Macpass district, targeting high-
grade step-outs at Tom, as well as resource conversion, geotechnical, hydrogeological, and
geometallurgical drilling at Mactung. There are three active drill camps with a total capacity of ~150
people as well as an active regional exploration program consisting of two fly camps facilitating
gravity, soil sampling, and prospecting. Regional zinc and gold exploration targets will be drill-tested
in the latter half of the exploration season.
One drill is currently active at the Gayna project targeting carbonate reef margin massive sulphides
and testing a new genetic model that was developed using the Kipushi deposit in the
Democratic
Republic of Congo
as a conceptual geological analogue.
Next Steps
To date, the Company has released the results of the first seven drill holes of the 2025 campaign,
with six focused at Boundary Zone and one regional target. Additional results from Tom, Mactung,
and regional drilling will be made available as they are received and interpreted.
Qualified Person Statement
Technical information in this news release has been reviewed and approved by Fireweed Metals
Senior Geologist,
Ian Carr
, P.Geo. (BC), a 'Qualified Person' as defined under Canadian National
Instrument 43-101 ("NI 43-101"). Mr. Carr is not independent of the Company in accordance with NI
43-101.
About Fireweed
Fireweed is an exploration company focused on unlocking value in a new critical metals district
located in
Northern Canada
. Fireweed is 100% owner of the Macpass District, a large and highly
prospective 985 km
2
land package. The Macpass District includes the Macpass zinc-lead-silver
project and the Mactung tungsten project. A Lundin Group company, Fireweed is strongly positioned
to create meaningful value.
Fireweed trades on the TSX Venture Exchange under the trading symbol "
FWZ
", on the OTCQX
Best Market under the trading symbol "
FWEDF
", and on the Frankfurt Stock Exchange under the
trading symbol "
M0G
".
Additional information about Fireweed and its projects can be found on the Company's website at
FireweedMetals.com
and at
www.sedarplus.com
ON BEHALF OF FIREWEED METALS CORP.
"
Ian Gibbs
"
CEO & Director
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.
Data Verification
The diamond drill core logging and sampling program was carried out under a rigorous quality
assurance / quality control program using industry best practices. Drill intersections in this release
are NQ2 size (50.5 mm/ 1.99-inch diameter)with recoveries typically above 85% unless otherwise
noted in the results tables. After drilling, core was cleaned, logged for geology, structure, and
geotechnical characteristics, then marked for sampling and photographed on site. Certain cores
were selected for core scanning using light detection and ranging (LiDAR), short-wave infrared
(SWIR), X-ray fluorescence (XRF), and high resolution RGB image capture. The cores for analyses
were marked for sampling based on geological intervals with individual samples two metres or less
in length, with one metre samples within mineralized zones. Drill core was cut lengthwise in half with
a core saw; half-core was sent for assays reported in this news release, and the other half is stored
on site for reference. Bulk density was determined on site for the entire length of each assay sample
by measurement of mass in air and mass in water. Sample duplicate bulk density determinations and
in-house bulk density standard determinations were each made at a rate of 5%. Since 2017, four in-
house bulk density standards (mineralized drill core from the Tom deposit that span a range of
densities) have been used and show an acceptable long-term precision. Certified standard masses
are used to calibrate the scale balance used for bulk density determinations.
A total of 5% assay standards or blanks and 5% core duplicates are included in the sample stream
as a quality control measure and are reviewed after analyses are received. Standards and blanks in
2025 drill results to date have been approved as acceptable. Duplicate data add to the long-term
estimates of precision for assay data on the project and precision for drill results reported is
deemed to be within acceptable levels. Samples were sent to the Bureau Veritas (BV) preparation
laboratory in
Whitehorse
,
Yukon
, where the samples were crushed and a 500 g split was sent to the
BV laboratory in
Vancouver, B.C
to be pulverized to 85% passing 200 mesh size pulps. Clean crush
material was passed through the crusher and clean silica was pulverized between each sample. The
pulps were analyzed by 1:1:1 Aqua Regia digestion followed by Inductively Coupled Plasma Mass
Spectrometry (ICP-ES/ICP-MS) multi-element analyses (BV Code AQ270). Samples that contained
greater than or equal to 1,500 ppm Zn were further analyzed for gallium and germanium using
hydrofluoric acid (HF) + aqua regia closed vessel digestion and ICP-MS finish (BV Code GC204). All
samples were also analyzed for multiple elements by lithium borate fusion and X-ray fluorescence
analysis (XRF) finish (BV Code LF725). Over-limit lead (>25.0%) and zinc (>24.0%) were analyzed
by lithium borate fusion with XRF finish (BV Code LF726). Silver is reported in this news release by
method AQ270, zinc and lead are reported by LF725 or LF726, and gallium and germanium are
reported by GC204. Bureau Veritas (
Vancouver
) is an independent, international ISO/IEC
17025:2017 accredited laboratory.
Assay values may appear rounded to one decimal place but are given in full in Table 1, and Cross
Sections where zinc and lead grades are reported to two decimal places.
Results in this news release are length and bulk-density weighted averages as would be used in a
Mineral Resource estimate. Length and bulk-density weighted averages have been reported as
these most accurately represent the average metal-content of the intersections.
True widths for primary intervals are estimated by measuring perpendicular to strike within the short
axis of a stratiform wireframe that has been constructed in 3D around the mineralized intercepts at
Boundary Zone based on assay results, geological logging, stratigraphic correlation, and bedding
measurements from oriented core. The massive sulphide mineralization and laminated mineralization
at Boundary Zone are stratiform (oriented parallel to bedding), therefore the true width, or thickness,
of the zone is estimated perpendicular to both the strike and dip direction of bedding. True widths
are rounded to the nearest metre for widths over
10 m
and to the nearest
0.1 m
for widths less than
10 m
, as this better reflects the precision of the estimates. True widths should be regarded as
approximate as these are derived from an estimation that uses a preliminary interpretation of the
geological model. True widths for nested intervals (marked as "Including" in results tables) are
estimated using a ratio of included to primary intersected widths to attribute appropriate portions of
the true width of the primary interval to the nested intervals.
Cautionary Statements
Forward Looking Statements
This news release contains "forward-looking" statements and information ("forward-looking
statements"). All statements, other than statements of historical facts, included herein, including,
without limitation, statements relating to interpretation of drill results, targets for exploration,
potential extensions of mineralized zones, and the potential of the Company's projects, are forward
looking statements. Forward-looking statements are frequently, but not always, identified by words
such as "expects", "anticipates", "believes", "intends", "estimates", "potential", "possible", and
similar expressions, or statements that events, conditions, or results "will", "may", "could", or
"should" occur or be achieved. Forward-looking statements are based on the beliefs of Company
management, as well as assumptions made by and information currently available to Company
management and reflect the beliefs, opinions, and projections on the date the statements are
made. Forward-looking statements involve various risks and uncertainties and accordingly,
readers are advised not to place undue reliance on forward-looking statements. There can be no
assurance that such statements will prove to be accurate, and actual results and future events
could differ materially from those anticipated in such statements. Important factors that could cause
actual results to differ materially from the Company's expectations include but are not limited to,
exploration and development risks, unanticipated reclamation expenses, expenditure and financing
requirements, general economic conditions, changes in financial markets, the ability to properly
and efficiently staff the Company's operations, the sufficiency of working capital and funding for
continued operations, title matters, First Nations relations, operating hazards, political and
economic factors, competitive factors, metal prices, relationships with vendors and strategic
partners, governmental regulations and oversight, permitting, seasonality and weather,
technological change, industry practices, uncertainties involved in the interpretation of drilling
results and laboratory tests, and one-time events. The Company assumes no obligation to update
forward
looking statements or beliefs, opinions, projections or other factors, except as required by
law.
Footnotes and References
1
: For Tom, Jason, End Zone, and Boundary Zone Mineral Resources, see the technical report
entitled "Technical Report for NI 43-101, Macpass Project,
Yukon, Canada
" with effective date
September 4
th
, 2024 filed on Sedar+
here
Pierre Landry, P.Geo. is independent of Fireweed Metals
Corp., and a 'Qualified Person' as defined under Canadian National Instrument 43-101.
Pierre
Landry
, of SLR, is responsible for the Tom, Jason, End Zone, and Boundary Zone Mineral Resource
Estimates.
Map 1: Macpass Project and Mactung Project locations (CNW Group/Fireweed Metals Corp.)
Map 2: Boundary Zone composite intervals in 2025 drilling, 2024 drilling and pre-2024 drilling with
constrained resource projection to surface (CNW Group/Fireweed Metals Corp.)
Cross section AA to AA’: NB25-001 and NB25-002 (CNW Group/Fireweed Metals Corp.)
Cross section AB to AB': NB25-003, NB25-004, and NB25-005 (CNW Group/Fireweed Metals
Corp.)
Long section M to M': showing Boundary Zone 2024 resource projected to the section, 2025, 2024
and pre-2024 drilling (CNW Group/Fireweed Metals Corp.)
Photo 1: Sphalerite and galena within faulting in NB25-004 at 204.1 m (CNW Group/Fireweed
Metals Corp.)
Photo 2: NB25-004 38.7 to 45.2 m—matrix replacement sphalerite and siderite (CNW
Group/Fireweed Metals Corp.)
Table 1: NB25-001, NB25-002, NB25-003, NB25-004, NB25-005, NB25-006, and MP25-001 drill
results
Drillhole
Interval
From (m)
To (m)
Interval
Width
(m)
Est.
True
Width
(m)
‡
Zinc
(%)
Lead
(%)
Silver
(g/t)
Gallium
(ppm)
Germanium
(ppm)
Bulk
Density
(t/m
3
)
NB25-002
Primary
174.77
182.21
7.44
N/A
3.80
0.04
8.3
5.89
8.26
3.33
NB25-002
Primary*
200.85
222.57
21.72
N/A
3.71
0.01
4.2
8.90
8.60
2.87
NB25-002
Including
215.09
222.57
7.48
N/A
4.83
0.01
3.2
9.39
9.78
2.82
NB25-002
Primary
291.00
294.59
3.59
N/A
3.16
0.01
5.4
7.09
9.62
3.48
NB25-002
Primary
353.50
367.00
13.50
N/A
2.37
0.06
2.5
12.31
8.89
3.24
NB25-002
Primary
380.60
387.50
6.90
N/A
2.28
0.62
8.7
10.32
5.42
3.36
NB25-003
Primary
17.78
24.40
6.62
N/A
1.70
0.01
2.2
6.33
5.25
3.45
NB25-003
Primary
108.12
119.96
11.84
N/A
1.58
0.21
3.4
16.86
11.48
3.14
NB25-004
Primary
12.79
48.13
35.34
N/A
3.35
0.01
2.2
8.04
12.07
3.17
NB25-004
Including
33.29
41.26
7.97
N/A
8.00
0.01
4.1
11.85
25.77
3.31
NB25-004
Primary
157.02
161.33
4.31
N/A
3.86
0.04
12.3
5.29
31.41
3.16
NB25-004
Primary*
202.60
207.00
4.40
4.0
9.35
1.38
21.2
6.52
65.38
3.44
NB25-004
Including
203.90
205.10
1.20
1.1
23.44
4.15
55.8
6.00
180.00
3.99
NB25-005
Primary
64.00
67.14
3.14
N/A
5.62
0.02
4.3
8.06
39.14
3.03
‡
See "Data Verification" for a description of true width calculations
* Denotes intercepts with recovery below 85%
Drillhole
Length
(m)
Zone
Significant Intersection
Type
NB25-001
62.00
Boundary Zone
Abandoned
Step Out
NB25-002
536.30
Boundary Zone
Vein, breccia, and replacement
Step Out
NB25-003
188.04
Boundary Zone
Vein, breccia, and replacement
Step Out
NB25-004
242.05
Boundary Zone
Narrow Stratiform Intersection
Step Out
NB25-005
198.05
Boundary Zone
Vein, breccia, and replacement
Step Out
NB25-006
80.04
Boundary Zone
None
Exploration
MP25-001
206.40
Exploration
None
Exploration
Table 2: 2024 Drilling Summary
Table 3: Drill Hole Collar Information
Drillhole
Zone
Length (m)
Easting
Northing
Elevation
(m.s.l)
Azimuth (°)
Dip (°)
MP25-001
Regional
206.40
431663.56
7005073.72
1258.67
205.03
-51.30
NB25-001
Boundary
62.00
422469.38
7010518.89
1193.09
25.00
-70.00
NB25-002
Boundary
536.30
422469.38
7010518.89
1193.09
27.37
-70.21
NB25-003
Boundary
188.04
422668.21
7010230.31
1131.81
216.10
-49.58
NB25-004
Boundary
242.05
422656.00
7010291.00
1140.38
215.32
-49.51
NB25-005
Boundary
198.05
422581.16
7010273.67
1133.71
214.79
-59.46
NB25-006
Boundary
80.04
421920.28
7010301.58
1137.44
4.83
-50.01
Coordinates listed in NAD83 UTM Zone 9N.
SOURCE
Fireweed Metals Corp.
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For further information:
Alex Campbell, Phone: +1 (604) 689-7842, Email:
CO: Fireweed Metals Corp.
CNW 09:05e 30-JUL-25