Lomiko Metals Announces Ruisseau Graphite Project Exploration Update, La Roche Zone Extension and Fall Workplan
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Lomiko Metals Announces Ruisseau Graphite Project Exploration Update, La
Roche Zone Extension and Fall Workplan
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June 30th, 2025 – Montreal, Québec: Lomiko Metals Inc. (TSX.V: LMR) (“Lomiko” or the
“Company”) announces exploration results from the spring program at the Ruisseau graphite
prospect and plans for the summer/fall exploration and drilling program anticipated in November
2025.
Gordana Slepcev, CEO, President, and Director, stated: “We’re thrilled to advance our work on
the Ruisseau graphite prospect following the success of the spring field program, which confirmed
the continuity of the two western zones and revealed extended mineralization through our sampling
efforts. Notably, one of the western zones expanded significantly—from 1,480 metres in 2024 to
approximately 3,850 metres. These promising results have motivated us to develop a plan for
further exploration, including a maiden drill program targeting the two western zones. We intend
to drill 18 holes in the Rune zone and 20 in La Roche, totaling an initial 2,500 metres.”
Ruisseau prospecting and sampling results
The Company is pleased to report the results of a Beep-Mat prospecting and sampling program
completed in May 2025 on the 84-claim (4,866-hectare) Ruisseau Graphite property located
approximately 20 kilometres north of L’Ascension in the Laurentian Region of Québec (Figure 1).
The primary goal of the program was to prospect and sample along the south extensions of the
Rune and La Roche airborne time domain electromagnetic (TDEM) trends, specifically to confirm
drill targets along these graphite-bearing structures. In 2023 and 2024, a total of 35 samples were
collected along the Rune TDEM trend, with seven samples returning 15 to 20 per cent graphitic
carbon (% Cg) and fifteen samples returning >20% Cg up to a maximum of 27.90% Cg along a
1,450-metre strike length. At La Roche, a total of 23 samples were collected along a 1,480-metre
strike length with six samples returning 15 to 20% Cg and six returning >20% Cg up to a maximum
of 24.70% Cg. Refer to the press release issued in January 2025 outlining four zones at Ruisseau
(https://lomiko.com/news/lomiko-metals-encounters-up-to-27-9-graphite-at-its-laurentides-early-
stage-projects-including-the-discovery-of-four-new-zones-at-the-ruisseau-project-spanning-over-
3-kilometres-long/)
Work program
The 2025 work program consisted of prospecting and sampling over a 10-day period with the aid
of a Beep-Mat. A total of 39 rock samples, including three QAQC samples, were collected. The
samples showed strong results with 29 of 36 samples returning greater than 1.0% Cg as follows:
# Category Range
1 Below detecƟon < 0.05% Cg
6 Below the Anomalous threshold < 1.0% Cg
5 Anomalous 1.0 to < 5.0% Cg
4 Low grade 5.0 to <10.0% Cg
8 Moderate grade 10.0 to <20.0% Cg
12 High grade 20.0% Cg
36 Total
The northeast-trending Rune zone has been delineated by prospecting and sampling along an
airborne TDEM trend over a length of 1,450 metres (Figure 1). It remains open to the northeast
and southwest beyond the limits of the 2022 Airborne. The Beep-Mat detected conductivity over
surface widths up to 25 metres in places across the zone. Sampling in 2025 at the southern limit
of the airborne geophysical coverage returned strong graphite results up to a maximum of 27.5%
Cg. Prospecting and sampling on the south projection of the Rune zone outside the limits of the
2022 airborne geophysical survey returned two widely spaced, strong values of 6.01 and 18.00%
Cg from float samples.
In addition, the 2025 sampling along the southern extension of the La Roche TDEM trend was
incredibly successful with numerous moderate to high grade results up to a maximum of 27.5%
Cg (Figure 1). The known strike length of the La Roche graphite zone on the Property was
extended from 1,480 metres in 2024 to approximately 3,850 metres. The Beep-Mat detected high
conductivity over surface widths up to 50 metres in places. The La Roche zone is approximately
450 metres east of and runs parallel to the Rune zone. La Roche zone coincides with an airborne
TDEM trend that extends for its entire length within the Property and that likely continues beyond
the limits of the Property.
The graphite mineralization at both Rune and La Roche is commonly found in bands within
paragneiss and consists of very coarse-grained graphite flakes. It is usually accompanied by biotite
and minor sulphides and is typically quite rusty. The apparent thickness of individual bands can
be inferred by strong conductivity readings from the Beep-Mat, with an average width of 5 to 10
metres and lengths of 100 to 200 metres.
Structurally, the Rune and La Roche zones appear to be on opposite limbs of a north - to northeast-
trending synform. Both zones show moderate to shallow dips that are on average 50° from
horizontal. Typically, graphite bands are best exposed along the west margin of the Rune TDEM
trend and dip east, whereas graphite bands are found along the east margin of the La Roche TDEM
trend and dip west.
Figure 1: Compilation of rock sample results over Early Off Time TDEM
Drill Program Proposed
A total of five primary and four secondary targets at Rune and six primary and four secondary
targets at La Roche have been selected for drill testing (Figure 2) based on the 2022 airborne
geophysical survey and the strong graphite values obtained from the 2023, 2024 and 2025
prospecting and sampling programs. The Company intends to proceed with a 2,500-metre drill
program that will test the Priority 1 drill targets at Rune and La Roche.
Permitting has been initiated with the expectation that drilling can begin in early November 2025.
Figure 2: Proposed drill targets for Rune and La Roche zones over Late Off Time TDEM
QAQC and Analytical Procedures
All rock sample locations were recorded with Android rugged smart phones running Q-Field data
collection software in map datum UTM WGS84 Zone 18N. The Rock samples were photographed
and placed in plastic sample bags with sample numbers written on the bags in indelible ink. A
plastic, waterproof tag was left at the sample site. The samples were sealed in a rice bag with a
zip tie and delivered by Breakaway personnel to Activation Laboratories Ltd. (“Actlabs”) in Val
d’Or, Quebec. Two certified reference material standards and on blank were included with the 36
samples collected in 2025. In Val d’Or, the samples were crushed to 80% passing 2mm and then
riffle split to a 250g sub-sample that was pulverized to 95% passing 105μm (Actlabs Code RX1).
The sample pulps were then analyzed for graphitic carbon “Cg” by mild hydrochloric acid
digestion followed by combustion in an infrared induction furnace (Actlabs Code 8Cg). Actlabs
is accredited under ISO 9001:2015 registration and is independent of the Company.
Qualified Person
The technical content presented in this press release was reviewed by Mark Fekete, P.Geo., who
acts as an independent consultant to the Company as the “Qualified Person” as that term is defined
under National Instrument 43-101, Standards of Disclosure for Mineral Projects.
About Lomiko Metals Inc.
The Company holds mineral interests in its La Loutre graphite development in southern Quebec.
The La Loutre project site is within the Kitigan Zibi Anishinabeg (KZA) First Nation’s territory.
The KZA First Nation is part of the Algonquin Nation, and the KZA traditional territory is situated
within the Outaouais and Laurentides regions. Located 180 kilometers northwest of Montreal, the
property consists of one large, continuous block with 76 mineral claims totaling 4,528 hectares
(45.3 km2).
The Property is underlain by rocks from the Grenville Province of the Precambrian Canadian
Shield. The Grenville was formed under conditions that were very favorable for the development
of coarse-grained, flake-type graphite mineralization from organic-rich material during high-
temperature metamorphism.
Lomiko Metals published an updated Mineral Resource Estimate (MRE) in a NI 43-101 Technical
Report and Mineral Resource Estimate Update for the La Loutre Project, Quebec, Canada,
prepared by InnovExplo on May 11th, 2023, which estimated 64.7 million tonnes of Indicated
Mineral Resources averaging 4.59% Cg per tonne for 3.0 million tonnes of graphite, a tonnage
increase of 184%. Indicated Mineral Resources increased by 41.5 million tonnes as a result of the
2022 drilling campaign, from 17.5 million tonnes in 2021 MRE with additional Mineral resources
reported down-dip and within marble units resulted in the addition of 17.5 million tonnes of
Inferred Mineral Resources averaging 3.51% Cg per tonne for 0.65 million tonnes of contained
graphite; and the additional 13,107 metres of infill drilling in 79 holes completed in 2022 combined
with the refinement of the deposit and structural models contributed to the addition of most of the
Inferred Mineral Resources to the Indicated Mineral Resource category, relative to the 2021
Mineral Resource Estimate. The MRE assumes a US$1,098.07 per tonne graphite price and a cut-
off grade of 1.50% Cg (graphitic carbon). The independent and qualified persons for the mineral
resource estimate, as defined by NI 43 101, are Marina Iund, P.Geo. (InnovExplo Inc.), Martin
Perron, P.Eng. (InnovExplo Inc.)., Simon Boudreau, P.Eng. (InnovExplo Inc.). and Pierre Roy,
P.Eng. (Soutex Inc.). The effective date of the estimate is May 11, 2023.
The Company also holds interest in seven early-stage projects in southern Quebec, including
Ruisseau, Tremblant, Meloche, Boyd, Dieppe, North Low and Carmin, covering 328 claims in
total on 7 early-stage projects covering 18,622 hectares in the Laurentian region of Quebec and
within KZA territory.
The stage graphite portfolio consists of 328 claims in total on seven early-stage projects covering
18,622 hectares in southern Quebec. The grades presented below for the Laurentides graphite
portfolio were press-released on January 7 th, 2025. ( https://lomiko.com/news/lomiko-metals-
encounters-up-to-27-9-graphite-at-its-laurentides-early-stage-projects-including-the-discovery-of-four-
new-zones-at-the-ruisseau-project-spanning-over-3-kilometres-long/)
• Ruisseau–grades up to 27.9 percent carbon graphite (“% Cg”) from four distinct high grade
mineralized zones that are over 3km long;
• Meloche –grades up to 13.3% Cg from two distinct mineralized clusters;
• Tremblant –grades up to 11.6% Cg from numerous, widespread spot anomalies; and
• Dieppe –grades up to 6.82% Cg from numerous, widespread spot anomalies and a distinct
mineralized cluster.
• Boyd–8 samples grades range from 5.61% Cg to 17.10 %Cg with all samples above 5.00% Cg.
The technical content regarding the exploration results presented was reviewed by Mark Fekete,
P.Geo. who acts as an independent consultant to the Company and is the Qualified Person.
In addition to La Loutre, Lomiko has earned a 49% stake in the Bourier Project from Critical
Elements Lithium Corporation as per the option agreement announced on April 27 th, 2021. The
Bourier project site is located near Nemaska Lithium and Critical Elements south-east of the Eeyou
Istchee James Bay territory in Quebec, which consists of 203 claims for a total ground position of
10,252.20 hectares (102.52 km2), in Canada’s lithium triangle near the James Bay region of
Quebec that has historically housed lithium deposits and mineralization trends.
The Yellow Fox Property is located approximately 10 km southwest of the Town of Glenwood
NL, and south of the Trans-Canada Highway. The Property occurs within NTS map sheets 02D/14
and 15 with excellent access along several logging and skidder roads originating from
Glenwood. The main Yellow Fox showing is located in the central part of License 027536M, 5km
from the western end of Gander Lake.
This property is on the same trend as the past-producing antimony mine Beaver Brook, which is
located 25km southwest of the property. Yellow Fox is an early-stage exploration property
prospective in antimony, gold, and silver where historic works returned samples anomalous in gold
(Au), antimony (Sb), lead (Pb), zinc (Zn), and silver (Ag). The trenching exposed the rocks,
resulting in grab samples to 59.43g/t Au, 11.10% Sb, 7.00% Zn, 72.90g/t Ag, and 5.50% Pb in
arsenopyrite-stibnite veins within altered monzogranite. (See Metals Creek assessment report at
https://gis.geosurv.gov.nl.ca/geofilePDFS/Batch2016/002D_0779.pdf)
Lomiko QP relied on the information provided by Metals Creek. Metals Creek QP is Wayne
Reid P.Geo. is registered in Newfoundland.
On behalf of the Board,
Gordana Slepcev
CEO & President and Director, Lomiko Metals Inc.
For more information on Lomiko Metals, review the website at www.lomiko.com.
Contact us at 1-833-4-LOMIKO or e-mail: [email protected].
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