Frontier Lithium Intersects 136.7M of 1.32% LI 2O and Extends Spark Pegmatite
FRONTIER LITHIUM INTERSECTS 136.7M OF 1.32% Li 2O AND EXTENDS SPARK
PEGMATITE
Sudbury, Ontario, June 13, 2024, – Frontier Lithium Inc. (TSXV: FL) (FRA: HL2) (OTCQX: LITOF)
("Frontier" or "the Company"), is pleased to announce update on the winter work program with results
from five geotechnical holes drilled on the Spark pegmatite to advance the first phase of definitive
feasibility study.
Highlights
- DDH PL-GDH-24-24 intersected 136.7m of pegmatite from surface averaging 1.32% Li2O.
- DDH PL-GDH-26-24 intersected 53.2m of pegmatite from surface averaging 1.24% Li2O and
26.9m from 222.0 to 248.8m averaging 2.12% Li2O and 0.7% Rb2O.
o Including 8.4m from 45.1 to 53.5m averaging 2.33% Li2O
o Including 5.0m from 116.8 to 121.8m of elevated Ta (685 ppm Ta2O5) and Sn (1,465
ppm SnO2).
o Including 7.0 m from 240.8 to 247.9 averaging 2.97% Li2O and 1.04% Rb2O
- DDH PL-GDH-27-24 intersected 48.1m of pegmatite from surface averaging 1.93% Li2O and
another 49.8m from 129.7 to 179.5m averaging 2.23% Li 2O with elevated Cs ( 0.61% Cs2O)
and Ta (461 ppm Ta2O5)
o Including 8.3m from 31.7 to 40.0m averaging 3.33% Li2O
o Including 5.9m from 144.1 to 150.0m of 3.4% Li2O and 2.75% Cs2O
- DDH PL-134-24 stepped out 200m to the west as a condemnation hole, intersected 26.8 m of
pegmatite from 18.9 to 45.7m confirming that the Spark pegmatite remains open.
"The geotechnical winter diamond drill program yielded consistent drill intersections with the two
northern holes confirming and extending a high -grade lithium zone, with enriched cesium and
tantalum. The program also extended the Spark pegmatite 200 metres to the west," commented Garth
Drever, VP Exploration of the Company. "Although width and lithium values were low, based on
existing drill intercepts to the east, we expect the pegmatite to increase in both grade and width with
depth."
During the winter season, four geotechnical holes (PL-GDH-24 to 27-24) were drilled from the top of
Spark in four directions to test pit-wall stability and hydrogeological conditions . As expected,
mineralized pegmatite was intersected in all holes. A fifth condemnation hole was drilled 200m to the
west, near a proposed overburden stockpile. Figure 1 shows the project area from the Knox camp to
the Mining Lease area. Figure 2 is a map of the Spark deposit highlighting the 2024 drilling and
displaying all drill holes.
In addition to the diamond drilling at Spark, during February-March geotechnical drilling continued on
potential infrastructure sites including stockpiles, tailing management, mill and other related facilities.
Environmental studies and moni toring continued and well as community engagement. All work was
conducted out of the Knox camp situated on the winter road to Deer Lake as shown on Figure 1.
Figure 1: Location Map showing project area with existing and proposed PFS Infrastructure
Figure 2: Spark outline showing drill hole detail for the 5 holes reported.
Table 1 details the drill holes with mineralized intersections from the Spark area while Table s 2
summarize all drill holes completed at Spark in 2024.
Table 1: Summary of 2024 Drill Hole Intersections at Spark
PL-GDH-24-24
Collared on the southern end of the main Spark pegmatite zone, hole was designed by DRA Global as part of a
geomechanical-hydrogeological program to test the hydraulic conductivity with packer testing and to provide rock
mechanics data for the pit design, in support of a DFS study. DDH intersected the main spark pegmatite and a sub-
horizontal fault zone as expected.
Zone From
(m)
To
(m)
Width
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm)
Nb2O5
(ppm)
SnO2
(ppm)
Rb2O
(%) Unit
Spark Main Zone 0.6 137.3 136.7 1.32 0.018 95 81 59 0.27 Pegmatite w/ minor mafics
including 24.8 33.6 8.8 1.74 0.015 134 96 42 0.30 Pegmatite
including 44.3 49.2 4.9 1.87 0.009 71 91 39 0.28 Pegmatite
PL-GDH-25-24
Collared on the SW edge of the main Spark pegmatite zone where it begins to break up into smaller pods, the hole was
designed by DRA Global as part of a geomechanical-hydrogeological program to test the hydraulic conductivity with packer
testing and to provide rock mechanics data for the pit design, in support of a DFS study. An unexpected 12.8m wide Aplite
zone was intersected grading 1.77% Li2O.
Zone From
(m)
To
(m)
Width
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm)
Nb2O5
(ppm)
SnO2
(ppm)
Rb2O
(%) Unit
Aplite Zone 41.2 54.0 12.8 1.77 0.025 97 75 54 0.37 Aplite
DDH PL-GDH-26-24
Collared on the NW edge of the main Spark pegmatite zone, the hole was designed by DRA Global as part of a
geomechanical-hydrogeological program to test the hydraulic conductivity with packer testing and to provide rock
mechanics data for the pit design, in support of a DFS study. The hole intersected the northern pegmatite contact as
expected and was terminated due to time constraints in an unexpected pegmatite zone to the north grading 2.12% Li 2O
over 26.9m. The hole will be extended at a later date.
Zone From
(m)
To
(m)
Width
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm)
Nb2O5
(ppm)
SnO2
(ppm)
Rb2O
(%) Unit
Spark Main Zone 0.3 53.5 53.2 1.24 0.018 62 91 66 0.27 Pegmatite + Aplite w/ minor mafics
including 33.4 37.9 4.5 2.28 0.010 83 118 86 0.20 Pegmatite
including 45.1 53.5 8.4 2.33 0.010 81 105 55 0.23 Pegmatite
Pegmatite Zone 116.8 121.8 5.0 0.33 0.014 685 107 1465 0.11 Pegmatite (enriched Ta + Sn)
Pegmatite Zone 222.0 248.8 26.9 2.12 0.047 266 65 252 0.70 Aplite
including 240.8 247.9 7.0 2.97 0.065 104 38 103 1.04 Aplite
DDH PL-GDH-27-24
Collared on the NE end of the main Spark pegmatite zone, the hole was designed by DRA Global as part of a
geomechanical-hydrogeological program to test the hydraulic conductivity with packer testing and to provide rock
mechanics data for the pit design, in support of a DFS study. The hole intersected the northern pegmatite contact as
expected and an unexpected pegmatite zone to the north grading 2.23% Li2O over 49.8m with anomalous Cs up to 2.8%
Cs2O over 5.9m
Zone From
(m)
To
(m)
Width
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm)
Nb2O5
(ppm)
SnO2
(ppm)
Rb2O
(%) Unit
Spark Main Zone 0.8 48.9 48.1 1.93 0.026 95 87 78 0.30 Aplite
including 17.2 22.0 4.8 2.53 0.023 60 63 67 0.27 Aplite
including 31.7 40.0 8.3 3.33 0.014 79 78 65 0.19 Aplite
Pegmatite Zone 129.7 179.5 49.8 2.23 0.613 461 57 364 0.89 Aplite
including 144.1 150.0 5.9 3.40 2.755 290 21 123 0.85 Pegmatite (enriched Li + Cs)
DDH PL-134-24
PL-134-24 was designed as a condemnation hole, stepped out 200m west of the Spark pegmatite to define planned
infrastructure for the DFS study. The hole intersected 45.69m of pegmatite, extending the SW zone of the Spark
pegmatite further to the west. Although Li2O values fall below cutoff, the zone is expected to continue at depth with
stronger spodumene mineralization as previously indicated in DDH holes to the east. The intersection confirms that the
Spark pegmatite continues to run to the west and remains open.
Zone From
(m)
To
(m)
Width
(m)
Li2O
(%)
Cs2O
(%)
Ta2O5
(ppm)
Nb2O5
(ppm)
SnO2
(ppm)
Rb2O
(%) Unit
Pegmatite Zone 18.9 45.7 26.8 0.31 0.009 78 108 56 0.39 Pegmatite-Aplite
including 25.3 28.1 2.8 2.11 0.008 59 94 56 0.22 Pegmatite
Table 2: Summary of 2024 Drilling at Spark
DDHNo
Date Drilled UTM Zone 15N (NAD83) Collar Orient Metres Drilled
Start End Easting Northing (mASL) Azim Dip Start End
2024 Geotech Program PL-GDH-24-24 02/17/2024 02/25/2024 472,759 5,829,448 351.7 128 -72 0 248.6
PL-GDH-25-24 02/27/2024 03/05/2024 472,699 5,829,432 352.0 228 -72 0 245.8
PL-GDH-26-24 03/06/2024 03/11/2024 472,692 5,829,527 355.0 323 -72 0 248.8
PL-GDH-27-24 03/11/2024 03/17/2024 472,763 5,829,539 360.0 019 -70 0 248.8
PL-134-24 03/19/2024 03/21/2024 472,272 5,829,220 329.0 001 -46 0 205.5
Total metres drilled 1197.5
Due Diligence
All scientific and technical information in this release has been reviewed and approved by
Garth Drever, P.Geo., the qualified person ( “QP”) under the definitions established by National
Instrument 43 -101 - Standards of Disclosure for Mineral Projects . Under Frontier’s QA/QC
procedures, all drilling was completed by Chenier Drilling Ltd. of Val Caron, Ontario using NQ drill rods
for the geotechnical dri ll holes; thin walled BTW drill rods (4.2 cm core diameter) for all other holes
and a Reflex ACT III oriented core system. Using the Reflex system, the drill core was oriented and
marked as it was retrieved at the drill . A Reflex GYRO Sprint-IQ survey instrument was used every
50m downhole and again at the end of each hole when rods were pulled out . A Reflex North Finder
APS unit was utilized to complete accurate positioning and orientation of the drill collar upon setup.
The core was boxed and delivered to the Frontier core shack where it was examined, geologically
logged, and marked for sampling. The core was photographed prior to sampling. Using a rock saw,
the marked sample intervals were halved with one-half bagged for analysis. Sample blanks along with
lithium certified reference material was routinely inserted into the sample stream in accordance with
industry recommended practices. Field duplicate samples were also taken in accordance with industry
recommended practices. The samples were placed in poly sample bags and transported to AGAT
Laboratories Ltd. (AGAT) in Thunder Bay, Ontario for sample preparation and to Calgary, Alberta for
processing and quantitative multi-element analysis. AGAT is an ISO accredited laboratory. The core
is stored on site at the Company’s Knox exploration camp.
About Frontier Lithium
Frontier Lithium Inc. (TSX-V: FL) (FRA: HL2) (OTCQX: LITOF) is a preproduction business with an
objective to become an integrated strategic domestic supplier of spodumene concentrates for
industrial users as well as battery-grade lithium hydroxide and other chemicals to the growing electric
vehicle and energy storage markets in North America. The Company’s sole project maintains the
largest land position and resource in a premium lithium mineral district located in Ontario's Great Lakes
region.
About the PAK Lithium Project
The PAK lithium project contains North America's highest -grade lithium resource and is the second
largest in North America by size. The project encompasses close to 27,000 hectares and remains
largely unexplored; however, since 2013, the company has deline ated two premium spodumene -
bearing lithium deposits (PAK and Spark), located 2.3 kilometres apart. Exploration is continuing on
the project through two other spodumene - bearing discoveries: the Bolt pegmatite (located between
the PAK and Spark deposits), a s well as the Pennock pegmatite (25 kilometres northwest of PAK
deposit within the project claims). A 2023 Pre-Feasibility Study “National Instrument 43-101 Technical
Report PFS PAK Lithium Project" by BBA E&C Inc., delivered a 24- year project life, delivering a post-
tax NPV(8%) of US$1.74 billion and IRR of 24.1% as per the press release disseminated on May 31,
2023, and was filed on Sedar.com.
Company Contact Information
Bora Ugurgel
Senior Manager, Investor Relations
2736 Belisle Drive Val Caron, ON. P3N 1B3 CANADA
T. +001 705.897.7622
F. +001 705.897.7618
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