Fireweed Intersects Three Distinct High-Grade Zinc Zones Including 23.77% Zinc, 3.44% Lead, and 75.7 g/t Silver Over 10.42 m in New Zone at Boundary
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NEWS RELEASE
16th September 2021 TSXV: FWZ
Fireweed Intersects Three Distinct High-Grade Zinc Zones Including 23.77% Zinc,
3.44% Lead, and 75.7 g/t Silver Over 10.42 m in New Zone at Boundary West
Vancouver, British Columbia: FIREWEED ZINC LTD. (“Fireweed”) (TSXV: FWZ) is pleased to
announce the results from the second drill hole at Boundary West for the 2021 Macmillan Pass zinc-lead-
silver project drill program, Yukon, Canada.
Highlights
• Three distinct zones of zinc-lead-silver mineralization were intersected in a step-out hole at
Boundary West, including a newly discovered zone of high-grade laminated stratiform
mineralization similar in style to the Tom and Jason deposits.
• The new stratiform zone graded 23.77% zinc, 3.44% lead, and 75.7 g/t silver over 10.42 m within
a broader zone of 9.91% zinc, 1.64% lead and 39.6 g/t silver over 32.99 m.
• Massive to semi-massive sulphides under the stratiform interval ran 8.22% zinc, 0.71% lead, 53.6
g/t silver over 60.68 m including a higher-grade massive-sulphide zone of 10.36% zinc, 0.94%
lead, and 66.7 g/t silver over 40.08 m.
• A broad zone of vein-hosted mineralization at shallow depths in the hole returned 4.57% zinc,
0.02% lead, and 7.9 g/t silver over 40.24 m including a higher-grade zone of 9.99% zinc, 0.06%
lead, and 17.4 g/t silver over 13.40 m.
CEO Statement
Brandon Macdonald, CEO, stated “This step-out hole at Boundary West has delivered not one, but three
very impressive intersections over significant widths. Encouragingly, these three intersections represent
three separate zones of mineralization, including the first full intersection through the newly discovered
Tom-Jason style laminated stratiform mineralization. This hole demonstrates that the new zone has very
high grades of zinc, lead, and silver and opens up the rest of the Boundary area to exploration for this
style of mineralization. We are also very pleased to see the grades increasing with depth in the massive
sulphide mineralization and in the vein-hosted mineralization. This suggests that at Boundary West there
is great expansion potential at depth, where even higher grades may be anticipated. A very successful
2021 drill program is now wrapped up after hitting mineralization in each of the ten holes drilled at
Boundary Zone and we eagerly await the assay results from the remaining holes.”
Chairman John Robins added “The discovery of yet another high-grade zone this summer further
reinforces my belief that Fireweed’s Macmillan Pass project is one of the most exciting exploration
projects I have ever been involved with.”
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Boundary Zone Drilling
At Boundary West (Map 1, Map 2) diamond drill hole NB21-002 cut a complete intersection of newly
discovered laminated, stratiform zone of zinc-lead-silver mineralization grading 9.91% zinc, 1.64% lead,
and 39.6 g/t silver over 32.99 m including a very high-grade zone of 23.77% zinc, 3.44% lead, and 75.7
g/t silver over 10.42 m (Table 1, Cross Section 1). This new zone was partially intersected in NB21-001,
where the upper portion was truncated by a fault (as reported in Fireweed news release dated 17th August
2021). In NB21-002, the new zone comprises finely laminated sphalerite-galena-pyrite hosted by
laminated and silicified mudstone. The sphalerite is tan to pink in colour and combined with the presence
of abundant fine-grained galena, suggests that the mineralization is proximal to a feeder structure. The
style of the mineralization is similar to that encountered adjacent to, but not directly overlying, the feeder
structures at Tom and Jason. If similar characteristics are encountered at Boundary West, there is
potential to expand mineralization to depth along the interpreted vector to the feeder structure, where red
to brown sphalerite, even higher grades, and massive sulphides may occur.
A zone of massive to semi-massive sulphides was encountered in NB21-002, stratigraphically below the
newly discovered zone of laminated stratiform sulphides (Cross Section 1). The massive to semi-massive
sulphides graded 8.22% zinc, 0.71% lead, and 53.6 g/t silver over 60.68 m, including a higher-grade
massive sulphide intersection of 10.34% zinc, 0.94% lead, and 66.7 g/t silver over 40.08 m (Table 1). The
massive sulphide comprises massive pyrite-sphalerite-galena, and the intersection in NB21-002 contained
higher zinc grades due to a greater abundance of sphalerite than the intersections up-dip in holes NB21-
001 and NB20-004, suggesting that the system is better mineralized with depth where it is open for
expansion. This is supported by higher copper concentrations in the massive sulphides with depth,
averaging 582 ppm copper (316.39-356.47 m) in NB21-002, compared to low-hundreds of ppm copper in
NB21-001 and NB20-004, considered to be geochemically anomalous and indicating closer proximity to
the feeder with depth. Very high bulk densities were noted in the massive sulphides.
Table 1: NB21-002 drill hole results
Drill Hole From
(m) To (m) Intersected
width (m)1
Zinc
(%)
Lead
(%)
Silver
(g/t)
Bulk
Density
(t/m3)
Mineralization
Style
NB21-002 87.10 127.34 40.24 4.57 0.02 7.9 2.87
Vein hosted >including 87.10 100.50 13.40 9.99 0.06 17.4 3.03
>>including 88.21 91.57 3.36 22.20 0.11 28.4 3.39
>including 112.50 127.34 14.84 2.39 0.01 3.6 2.83
NB21-002 175.01 208.00 32.99 9.91 1.64 39.6 3.08
Laminated
stratiform
>including 175.01 185.43 10.42 23.77 3.44 75.7 3.57
>>including 179.00 183.58 4.58 36.14 5.25 100.7 3.70
>including 190.00 202.24 12.24 2.99 1.05 29.7 2.89
NB21-002 316.39 377.07 60.68 8.22 0.71 53.6 3.86
Massive to
semi-massive
sulphides
>including 316.39 356.47 40.08 10.36 0.94 66.7 4.15
>>including 335.21 342.21 7.00 13.77 1.28 96.0 4.43
>>>including 335.21 337.30 2.09 18.72 2.69 136.1 4.53
NB21-002 403.40 410.91 7.51 1.25 0.05 4.6 3.34 Laminated
stratiform
1True widths of stratiform, laminated mineralization, and semi-massive or massive sulphide
mineralization are estimated to be approximately 30 to 50% of intersected widths. Vein-hosted
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mineralization is interpreted to be a stockwork style, similar to Boundary Main, with an undetermined
true thickness.
A zone of vein-hosted zinc mineralization intersected at shallow depths (75 to 100 m vertically from
surface) graded 4.57% zinc, 0.02% lead, and 7.9 g/t silver over 40.24 m including an intersection of
9.99% zinc, 0.06% lead, and 17.4 g/t silver over 13.40 m. The vein-hosted mineralization comprises
pyrite-sphalerite veins cutting chert pebble conglomerate accompanied by flooding of the conglomerate
matrix by siderite and minor replacement of the clasts and matrix by sphalerite with minor galena.
Drilling and Exploration Update
The drilling portion of the Macmillan Pass 2021 field program has been completed for a total of 3,850 m
in 13 holes. Mineralization has been intersected in every hole at Boundary Zone and Boundary West,
including wide massive sulphide zones in holes NB21-002, NB21-003 and NB21-004 (Table 2). Hole
NB21-005 was successful in extending zinc mineralization to depth at Boundary Zone. Holes NB21-006,
NB21-007, NB21-008, NB21-009, and NB21-010 all intersected zinc mineralization at Boundary West,
further defining and expanding the exploration target. Mineralization was also intersected in a hole
completed at Tom East, TS21-001 (Map 3). Collar details are provided in Table 3. Assays are pending for
all holes apart from NB21-001 (reported in Fireweed news release dated 17th August 2021) and NB21-
002 (reported in this release).
The soil sampling grid over the Kobuk gravity anomaly has been completed, in addition to a small
follow-up detailed grid over an area of anomalous lead-in-soil just north of End Zone.
Notes on sampling, assaying, and data aggregation:
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 all HQ3 (split
tube) size core (61.1mm / 2.4-inch diameter) with recoveries typically above 85%. Aft er drilling,
core was logged for geology, structure , and geotechnical characteristics, then marked for sampling and
photographed on site. The cores for analyses were marked for sampling based on geological intervals with
individual samples 1.5 m or less in length. 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 sample assayed 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 2021 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 preparation laboratory in Whitehorse, Yukon, where the
samples were crushed and a 500 g split was sent to the Bureau Veritas 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). All samples were also analyzed for multiple elements by lithium borate fusion
and X-ray fluorescence analysis (XRF) finish (BV Code LF725). Over-limit Pb (>25.0%) and Zn (>24.0%)
were analyzed by lithium borate fusion with XRF finish (BV Code LF726). Silver is reported in this news
release by method AQ270, and zinc and lead are reported by LF725 or LF726. Bureau Veritas (Vancouver)
is an independent, international ISO/IEC 17025:2005 accredited laboratory.
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Results in this news release are length and bulk -density weighted averages as would be used in a Mineral
Resource estimate. Readers are cautioned that in Fireweed news releases prior to 2020 , only length
weighted assay averages were reported which may result in slightly lower (under -reported) average
values. Length and bulk-density weighted averages have been reported as these most accurately represent
the average metal-content of the intersections.
Qualified Person Statement
Technical information in this news release has been approved by Jack Milton, P.Geo., Ph.D., Chief
Geologist and a ‘Qualified Person’ as defined under Canadian National Instrument 43101.
About Fireweed Zinc Ltd. (TSXV: FWZ): Fireweed Zinc is a public mineral exploration company
focused on zinc-lead-silver and managed by a veteran team of mining industry professionals. The Company
is advancing its district-scale 940 km2 Macmillan Pass Project in Yukon, Canada, which is host to the 100%
owned Tom and Jason zinc-lead-silver deposits with current Mineral Resources and a PEA economic study
(see Fireweed news releases dated January 10, 2018, and May 23, 2018, respectively, and reports filed on
www.sedar.com for details) as well as the Boundary Zone, Tom North Zone and End Zone which have
significant zinc-lead-silver mineralization drilled but not yet classified as mineral resources. The project
also includes large blocks of adjacent claims (MAC, MC, MP, Jerry, BR, NS, Oro, Sol, Ben, and Stump)
which cover exploration targets in the district where previous and recent work identified zinc, lead and
silver prospects, and geophysical and geochemical anomalies in prospective host geology.
Additional information about Fireweed Zinc and its Macmillan Pass Zinc Project including maps and drill
sections can be found on the Company’s website at www.FireweedZinc.com and at www.sedar.com.
ON BEHALF OF FIREWEED ZINC LTD.
“Brandon Macdonald”
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.
Cautionary Statements
This news release may contain “forward -looking” statements and information relating to the Company and the
Macmillan Pass Project that are based on the beliefs of Company management, as well as assumptions made by and
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information currently available to Company management. Such statements reflect the current risks, uncertainties and
assumptions related to certain factors including but not limited to, without limitations, exploration and development
risks, expenditure and financing requirements, general economic conditions, changes in financial markets, pandemics,
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 haza rds, 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, and one -time e vents.
Additional risks are set out in the Company’s prospectus dated May 9, 2017, and filed under the Company’s profile
on SEDAR at www.sedar.com. Should any one or more risks or uncertainties materialize or change , or should any
underlying assumptions prove incorrect, actual results and forward-looking statements may vary materially from those
described herein. The Company does not undertake to update forward‐ looking statements or forward‐ looking
information, except as required by law.
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Map 1: Location of Macmillan Pass deposits and exploration targets.
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Map 2: Boundary Zone 2021 drilling and location of cross section B-B’.
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Cross Section 1: Boundary West geology and assay results.