Fireweed Zinc Provides Final Boundary Zone Drill Results and a 2021 Exploration Review
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NEWS RELEASE
March 10, 2022 TSXV: FWZ
OTCQB: FWEDF
FSE:20F
Fireweed Zinc Provides Final Boundary Zone Drill Results and a 2021 Exploration Review
Vancouver, British Columbia: FIREWEED ZINC LTD. (“Fireweed” or the “Company”) (TSXV: FWZ;
OTCQB: FWEDF) is pleased to provide new diamond drilling results from the last two holes at Boundary
West and a synopsis of its 2021 exploration results and work program on the Macmillan Pass Zinc-Lead-
Silver Project in Yukon, Canada.
Highlights – New Drill Results
• Step-out hole NB21-009 at Boundary West intersected 14.0% zinc, 0.2% lead, and 57 g/t silver
over 3.05 metres within a broader stratiform zone grading 4.9% zinc, 0.7% lead, and 34 g/t silver
over 21.6 metres.
• Several narrow (0.85 to 2.0 m) intervals of high-grade (>10% Zn) vein mineralization were
intersected in a broader interval of vein mineralization grading 3.5% zinc over 28.3 m in hole
NB21-009.
• Hole NB21-010 extends mineralization to a strike length of over 400 metres at Boundary West.
Highlights for 2021 Exploration Program
• In 2021 drilling at Boundary West intersected multiple wide zones of high-grade mineralization
including stratiform layers, massive sulphides, veins, stockworks and replacements.
• Drilling highlights in step out holes included 8.22% zinc and 53 g/t silver over 60.68 metres, and
7.71% zinc and 32 g/t silver over 46.96 metres.
• A new discovery assayed 23.77% zinc, 3.44% l ead and 75.7g/t silver over 10.42 metres in
stratiform mineralization similar in style to the Tom and Jason deposits.
• A step-out drill intersection at Boundary Zone returned the first significant copper result of
1.54% copper and 5.42% zinc over 2.00 metres
• Infill drilling at Tom East intersected 11.7 metres of 6.9% zinc, 5.0% lead and 48.7 g/t silver
• All zones remain open for extension
• Ground gravity geophysics, airborne VTEM geophysics, geological mapping and geochemical
sampling were carried out and successfully identified several additional targets for drilling
CEO Statement
After reviewing these results, Fireweed CEO Brandon Macdonald stated “2021 was another globally
challenging year but through diligent work by our talented team and strict health protocols, we had another
very successful year at Macmillan Pass. The 2021 work was highlighted by new discoveries and excellent
results especially at Boundary West. The 2021 drill program continued to grow Boundary and Boundary
West Zones. We continued to intersect wide high-grade zones over a large area and in multiple rock
formations with a variety of mineralization types – massive sulphides, veins, stockworks, and another new
zone of laminated, stratiform mineralization similar in style to our large Tom and Jason deposits. All zones
remain open for extension building on what is already one of the largest undeveloped zinc resources in the
world at just Tom and Jason.
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I want to per sonally thank our talented and hard-working team for all their great work in 2021 , our First
Nations partners for their support, guidance and valuable contributions, and our shareholders for their trust
and support during a challenging year. We all look forward to another year of major accomplishments in
the field in 2022 which will lead to an updated mineral resource to include Boundary zones and an updated
PEA economic study next year.”
Boundary West New Drilling Results
These last two holes from the 2021 drill program extended Boundary West stratiform and vein
mineralization eastward. Hole NB21-009 was drilled at Boundary West and was collared to the north of the
Boundary Zone Fault. In the hangingwall of this fault, narrow intervals of high-grade sphalerite veins were
intersected within chert pebble conglomerates and mudstones of the late Devonian Earn Group, such as 2 m
of 17.17% zinc (Table 1). Within the footwall section of the fault, an interval of stratiform mineralization
was intersected grading 4.89% zinc, 0.67% lead, and 34.0 g/t silver over 21.6 m, comprising laminated,
stratiform sphalerite -pyrite mineralization (Photo 1), containing an interval of semi- massive sphalerite-
pyrite grading 13.99% zinc, 0.23% lead, and 56.9 g/t silver over 3.05 m (Table 1). This stratiform zone has
been correlated with the high -grade laminated zone discovered in 2021 at Boundary West. Below the
stratiform zone, several intervals of semi -massive pyrite-sphalerite were intersected withi n a barite-rich
interval with pseudomorphs of pyrite or silica after barite. These semi-massive sulphide zones are correlated
laterally to the zone of massive sulphide at Boundary West. Pervasive silicification was noted within and
surrounding the massive sulphide, semi-massive sulphide and laminated mineralization at Boundary West,
forming an alteration halo above and below the mineralization.
Table 1: Diamond Drilling Results, Boundary West
Hole
From
(m) To (m)
Interval*
(m)
Zn
(%)
Pb
(%)
Ag
(g/t)
Bulk
Density
(t/m3) Style
NB21-009 31.60 35.35 3.75 3.10 0.03 6.3 2.340 Vein-hosted
NB21-009 41.50 44.72 3.22 3.29 0.03 5.7 3.004 Vein-hosted
NB21-009 73.60 74.83 1.23 3.02 0.01 1.4 3.571 Vein-hosted
NB21-009 121.60 122.50 0.90 3.97 0.01 11.9 3.078 Vein-hosted
NB21-009 140.98 169.30 28.32 3.54 0.01 5.6 2.834 Vein-hosted
>including 140.98 142.06 1.08 12.64 0.01 13.9 2.874 Vein-hosted
>and 151.49 152.27 0.78 11.15 0.03 18.8 2.748 Vein-hosted
>and 157.60 159.60 2.00 17.17 0.04 28.4 3.249 Vein-hosted
>and 161.60 162.45 0.85 16.52 0.02 24.1 3.227 Vein-hosted
>and 168.30 169.30 1.00 9.74 0.02 11.4 2.799 Vein-hosted
NB21-009 189.10 189.99 0.89 1.72 11.08 43.1 3.472 Vein-hosted
NB21-009 228.00 249.60 21.60 4.89 0.67 34.0 3.135 Stratiform zone
>including 234.31 235.60 1.29 6.68 5.20 81.6 3.551 Stratiform zone
>and 246.55 249.60 3.05 13.99 0.23 56.9 3.832 Stratiform zone
NB21-009 295.00 298.00 3.00 2.13 0.44 13.9 3.221 Semi-massive sulphide
NB21-009 306.14 308.71 2.57 6.75 0.42 33.5 4.426 Semi-massive sulphide
NB21-009 438.55 439.97 1.42 7.18 0.17 12.3 4.093 Semi-massive sulphide
NB21-010 83.40 96.00 12.60 0.12 1.37 20.9 3.222 Semi-massive sulphide
NB21-010 138.28 142.40 4.12 1.97 1.37 18.1 3.189 Vein-hosted
NB21-010 158.00 166.75 8.75 1.65 0.43 12.9 3.291 Volcanic equivalent
*Intersected width. True widths of stratiform, semi-massive sulphide and volcanic-equivalent styles are interpreted to be 60-70%
of intersected widths. Vein-hosted mineralization is considered to be a stockwork with a true width equal to the intersected width.
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Photo 1: Illustrating laminated high-grade mineralization from the stratiform zone: grey sphalerite and brassy
pyrite within black mudstone cut by pink sphalerite veinlets. From NB21-009, 241.5 m depth, scale bar 20 mm.
Hole NB21-010 intersected lead-rich mineralization in silicified diamictites that correlate laterally to the
massive sulphide zone at Boundary West, confirming the presence of this barium-rich stratigraphic
interval for a strike length of over 400 metres across Boundary West. Whilst NB21-010 extended the
footprint of Boundary West, the potential stratigraphic and structural link between zinc mineralization at
Boundary West and Boundary Zone remains an untested yet geologically plausible target.
2021 Drilling and Exploration Highlights
In 2021 a total of 1 3 diamond drill holes (3,850 metres) were drilled at the Macmillan Pass Project . A
synopsis of the exploration target at Boundary Zone and Boundary West is given here along with selected
2021 drilling highlights (see Table 2 and complete results relating to 2021 drilling can be found in Fireweed
News Releases dated 17th August 2021, 16th September 2021, 18th November 2021, 23rd November 2021,
and 12th January 2022):
Boundary Zone and Boundary West Summary
The zinc mineralization in the Boundary area has a significant areal footprint, extending over 1,500 metres
strike length and a breadth of over 800 metres. Two distinct mineralization centers have been defined by
15 holes at Boundary West and 16 holes at Boundary Zone.
Boundary Zone is at least 350 m alo ng strike, has been drilled at least 300 m down -dip, is approximately
185 to 250 m true thickness, and occurs from surface beneath a thin blanket of till, approximately 5-10 m
thick. Intersections that cut through the complete thickness of Boundary Zone are over 200 metres in length
and range in grade from 2.35% to 4.51% zinc and contain many shorter high-grade intervals (Cross Section
A-A’). In 2021, step-out hole NB21-005 successfully extended zinc mineralization to depth and also
intersected a 2 m interval of 1.54% copper and 5.42% zinc – the first occurrence of significant grade copper
mineralization at Boundary Zone. Zinc mineralization at Boundary Zone typically takes the form of
sphalerite or sphalerite-pyrite veins, vein -breccias, or replacements within coarse clastic rocks. The
exploration target at Boundary Zone remains open in all directions.
Boundary West is over 400 m along strike, extends from 20 m below surface to over 300 m down-dip.
Boundary West contains multiple stratiform layers that form discrete zones of zinc mineralization,
including a laminated zone, a massive sulphide zone, a volcanic-hosted zone, and a “Howard’s Pass”-style
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zone. In addition to the stratiform zones there is a stockwork of sphalerite -pyrite veins. The high-grade
laminated zone was discovered in 2021 , with an intersection in NB21 -002 returning 23.77% zinc, 3.44%
lead, 75.7 g/t silver over 10.42 m and is similar in texture and mineralogy to the Tom and Jason deposits.
The massive sulphide zone comprises massive sphalerite-pyrite, was intersected multiple times in the 2021
drill program and ranges in grade on section B -B’ from approximately 4.8% to 6.5% zinc near surface to
8.2% to 10.4% zinc at depth, with a true width of approximately 22 to 27 metres. The volcanic-hosted zone
was intersected in 2021 hole NB21 -008 grading 5.4% zinc over 73.4 m and shows rapid lateral thickness
changes (Cross Section C -C’, Table 2). The Howard’s Pass style mineralization was intersected in 2020
hole NB20-009 but was not targeted in the 2021 drill program (for more details see Fireweed News Release
dated 25th February 2021). Boundary West is open in all directions, with a general trend of increasing grade
with depth and other geological indications of getting closer to the feeder with depth, where higher grades
may be anticipated.
The Boundary Zone -Boundary West area contains many geological features that provide a highly
prospective environment for a significant size sediment hosted zinc system, including:
• Abundant diamictite, multiple eruptions of alkalic mafic volcaniclastic rocks, rapid lateral thickness
and facies changes that all point to active extension throughout the deposition of the host rock
sequence.
• Highly varied styles of zinc mineralization and overprinting textural relationships that show
evidence for multiple episodes of zinc mineralization.
• Stratiform mineralization hosted at several different stratigraphic levels throughout a late
Ordovician through to late Devonian sequence of rocks within barite rich intervals, carbonate -
altered mafic volcaniclastic rocks and within brittle -vein stockworks that demonstrate a wide
variety of reactive host rocks and lithological-structural traps for zinc.
• The location of Boundary Zone along the “fertile corridor” (Map 1) adjacent to a major crustal
structure, the Hess Fault, within a region of synsedimentary faulting that provide a prospective
structural setting for zinc mineralization.
Table 2: 2021 Boundary West drilling highlights.
Drill Hole From
(m) To (m) Intersection
(m)1
Zinc
(%)
Lead
(%)
Silver
(g/t)
Bulk
Density
(t/m3)
Mineralization
Style
NB21-001 116.05 129.50 13.45 2.63 0.26 13.2 2.88 L
including 116.05 118.71 2.66 9.28 0.28 29.6 2.99 L
including 116.05 116.95 0.90 19.35 0.29 42.8 3.35 SM
NB21-001 187.25 234.21 46.96 7.71 0.70 32.1 3.52 L
including 187.25 188.92 1.67 30.95 7.60 77.8 3.70 L
including 187.25 188.15 0.90 46.50 11.54 117.3 4.13 L
including 193.77 215.35 21.58 10.11 0.64 44.0 4.05 MS
NB21-002 87.10 127.34 40.24 4.57 0.02 7.9 2.87
V 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
NB21-002 175.01 208.00 32.99 9.91 1.64 39.6 3.08
L 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
NB21-002 316.39 377.07 60.68 8.22 0.71 53.6 3.86
MS,SM 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
NB21-006 39.20 51.43 12.23†(60%) 11.14 0.40 38.8 3.05 L, V
including 44.20 48.07 3.87†(47%) 16.66 0.20 44.4 3.02 L, V
NB21-008 56.07 58.96 2.89 6.09 0.65 39.2 3.45 L, SM
NB21-008 186.67 260.02 73.35 5.41 0.19 10.5 3.50 V, MS
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including 194.61 196.80 2.19 9.85 0.13 17.0 4.04 SM
NB21-008 204.00 220.09 16.09 10.39 0.16 15.7 3.55 V, R
NB21-008 252.28 260.02 7.74 10.89 0.71 24.8 4.04 MS
NB21-009* 228.00 249.6 21.6 4.89 0.67 34.0 3.13 L
Including* 246.55 249.6 3.05 13.99 0.23 56.9 3.83 L
Table 3: 2021 Boundary Zone drilling highlights.
Drill Hole From
(m)
To
(m)
Interval
(m)1
Zinc
(%)
Lead
(%)
Copper
(%)
Silver
(g/t)
Bulk
Density
(t/m3)
Style
NB21-005 65.00 67.00 2.00†(70%) 5.42 0.04 1.54 5.7 2.77 V
NB21-005 109.95 313.00 203.05 2.35 0.01 0.01 4.6 2.86 V, R, SM
including 147.85 161.75 13.90 3.67 0.02 0.01 6.0 3.08 SM, V
including 180.25 214.70 34.45 4.61 0.01 0.01 8.9 2.93 SM, V
including 237.60 240.73 3.13 6.24 0.02 0.01 7.2 2.99 R
including 254.25 266.07 11.82 5.60 0.02 0.01 12.5 2.91 R, V
including 274.46 313.00 38.54†(59%) 3.47 0.01 0.01 4.3 2.74 SM, V
Mineralization Style: MS= massive sulphide; SM= semi massive sulphide; V= vein; R= replacement; L= laminated/stratiform
†Low recovery zone, core recovery indicated in parentheses.
*New drill results reported in this news release. See Table 1 for detailed results.
Tom East 2021 Drilling
Tom East is one of the highest grade zone s discovered on the property to date with current Mineral
Resources of 0.81 Mt at 8.74% Z inc, 8.62% Lead, and 110.0 g/t Silver Indicated in addition to 1.68 Mt at
9.86% Zinc, 12.86% Lead and 170.0 g/t Silver Inferred (see Fireweed news release dated 10th January 2018,
and reports filed on www.sedar.com for details) . Results from an infill hole drilled in 2021 are in Table 4
and a second hole tested the limits of the zone (see Figure 5 & Table 5). These infill results provide
information that will inform geological modelling for a new resource calculation and guide further
exploration. Tom East is open for expansion at depth.
Table 4: 2021 Tom East Zone Drill Results
Drill Hole From
(m)
To
(m)
Interval
(m)
Estimated True
Width (m)1
Zinc
(%)
Lead
(%)
Silver
(g/t)
Bulk Density
(t/m3)
TS21-001 145.21 183.20 37.99 11.70 6.92 5.03 48.7 3.20
Including 145.21 153.20 7.99 2.46 10.41 11.58 149.9 3.45
Including 150.20 152.20 2.00 0.62 12.61 15.01 219.6 4.27
Including 151.20 152.20 1.00 0.31 18.34 16.68 256.9 4.12
Field Work
Field work in 2021 consisted of geophysical surveying, geological mapping, and geochemical sampling
mainly at and west of the Boundary area, and successfully identified several additional targets for drilling
(see Figure 1). A total of 91 line kilometres of ground gravity surveys and 1,305 line kilometres of airborne
magnetic-electromagnetic (VTEM) were carried out in the Boundary area and beyond. A cutting edge muon
downhole geophysics survey was attempted but crews were unable to deploy the muon detectors down the
holes. Currently, interpretation of results from the 2021 mapping, geochemistry and geophysics work are
being carried out toward planning of the 2022 work program.
Future Plans
On December 8, 2021, Fireweed announced closing of a C$5.18 million financing toward an active 2022
exploration program. The financing was completed well before the next field season to allow the Company
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to secure drillers and contractors who are expected to be in short supply again next season . Final plans for
the 2022 exploration program will be announced when th e interpretation of 2021 field work is completed
and budgets are approved. The main goal of the 2022 program will be to complete sufficient work to update
the NI43-101 mineral resource to include Boundary zones and other results collected since 2018, and then
update the PEA economic study next year.
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% unless otherwise noted
in the tables of results. Afte r 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 t he 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 have been approved as acceptable. Duplicate data add to the long -term estimates of pr ecision 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 C ode 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.
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 p rior 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 43-101.
Oro Property Option Exercised
Fireweed is pleased to announce that it has exercised its option on the Oro Property covering the western
extension of the Fertile Corridor and exploration targets west of Boundary Zone (see Fireweed news release
dated 23 rd November 2020 f or details) . With this exercise, Fireweed is now 100% owner of all claims
comprising the 940 km2 Macmillan Pass Project.
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About Fireweed Zinc Ltd. (TSXV: FWZ; OTCQB: FWEDF ): Fireweed Zinc is a public mineral
exploration company managed by a highly experienced team of mining industry professionals. The
Company is advancing its 100% owned, district-scale 940 km2 Macmillan Pass Project in Yukon, Canada,
which is host to the Tom and Jason zinc-lead -silver deposits with current Mineral Resources and a PEA
economic study (see Fireweed news releases dated 10th January 2018, and 23rd May 2018, respectively, and
reports filed on www.sedar.com for details) as well as the Boundary Zone, Boundary Zone West, 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.
In Canada, Fireweed (TSXV: FWZ) trades on the TSX Venture Exchange. In the USA, Fireweed (OTCQB:
FWEDF) trades on the OTCQB Venture Market for early stage and developing U.S. and international
companies. Companies are current in their reporting and undergo an annual verification and management
certification process. Investors can find Real -Time quotes and market information for the Company on
www.otcmarkets.com. In Europe, Fireweed (FSE: 20F) trades on the Frankfurt Stock Exchange.
Additional information about Fireweed Zinc and its Macmillan Pass 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 co ntain “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
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, 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, and one -time events.
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 upda te forward ‐looking statements or forward‐ looking
information, except as required by law.
Footnotes:
1. Estimation of true widths of intervals in the drill results tables is based on current geological interpretation
of historic and recent drilling data. At Boundary Zone and Boundary West, true widths of semi-massive,
replacement and stratiform/laminated mineralization are estimated to be 30 to 80% of intersected interval
widths noted in this news release. Vein-hosted mineralization is interpreted to be stockwork style with true
widths equal to intersection widths.
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Figure 1: Location of Macmillan Pass deposits and exploration targets.