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Frontier Lithium Announces Expansion of Spark Deposit - 18.8 MT IN Indicated and 29.7 MT IN Inferred Categories

Corporate Updates

FRONTIER LITHIUM ANNOUNCES

EXPANSION OF SPARK DEPOSIT - 18.8 Mt IN

INDICATED AND 29.7 Mt IN INFERRED

CATEGORIES

SUDBURY, ON

,

Feb. 28, 2023

/CNW/ -

Frontier Lithium Inc.

(TSXV: FL) (FRA: HL2) (OTCQX:

LITOF)

(the "Company" or "Frontier")

is pleased to report an updated mineral resource estimate

(MRE) for the Spark deposit, the second delineated premium spodumene-bearing lithium deposit at

the PAK Lithium Project "Project". The resource estimation has been prepared by BBA E&C Inc.

Table 1 is a summary of the mineral resource estimate.

Highlights

Resource estimate update for Spark deposit includes:

18.8 million tonnes averaging 1.52% Li

2

O in the Indicated category, a 30% increase in size;

29.7 million tonnes averaging 1.34% Li

2

O in the Inferred category, a 64% increase in size;

The Spark lithium deposit remains open along strike and at depth.

"We are very pleased to announce a substantive increase of the size of the Spark deposit following

over

16,000m

of drilling and channeling completed in 2022. Particularly encouraging is the increased

lithium grade from 1.40 to 1.52% Li2O of the indicated category of the Mineral Resource Estimate.

Overall, this equates to a 27% increase in the size of the combined lithium pegmatites at the PAK

Lithium Project. The grade increase together with the previously released results further support the

ensuing PFS.", commented

Garth Drever

, Vice President Exploration of Frontier Lithium.

Cut-Off

(%)

Resource Category

Tonnes

(t)

Li

2

O

(%)

Nb

2

O

5

(ppm)

Cs

2

O

(%)

Ta

2

O

5

(ppm

Rb

2

O

(%)

SnO

2

(ppm)

Lithology

0.65 Li

2

O

Indicated

18,828,000

1.52

84

0.02

112

0.26

61

Aplite/Pegmatite

Inferred

29,746,000

1.34

77

0.03

116

0.26

74

Aplite/Pegmatite

Table 1: Summary of Mineral Resource Estimate for Spark Pegmatite

Mineral Resource Estimate Notes

1

.

Mineral Resources were prepared in accordance with NI 43-101 and the CIM Definition

Standards (2014). Mineral resources that are not mineral reserves do not have demonstrated

economic viability. This estimate of mineral resources may be materially affected by

environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.

2

.

Open pit Mineral Resources are reported at a cut-off grade of 0.65 % Li2O that is based on a

6.0% spodumene concentrate prices of

US$1,500

/tonne and an exchange rate of 1.29.

3

.

Appropriate mining costs, processing costs, metal recoveries, and inter ramp pit slope angles

were used by BBA to generate the pit shell.

4

.

Rounding may result in apparent summation differences between tonnes, grade, and contained

metal content.

5

.

Tonnage and grade measurements are in metric units.

6

.

A bulk density factor of 2.74 was applied to the pegmatite and 2.70 was applied to the aplite.

Modeling was performed using Datamine Studio RM software with grades estimated using ordinary

kriging (OK) interpolation methodology. Samples were composited at 2.0 metres down hole.

Assessment of composites indicated no capping was required on the Li

2

O grades. Block grades

were estimated on a multi pass basis with a minimum and maximum number of composites and

maximum number of composites per drillhole required for each estimation pass. Block size is 5

metres by 5 metres (y) by 5 metres (z).

Additional information about the Mineral Resource modeling methodology will be documented in the

NI 43-101 technical report (the "Technical Report") to be issued within 45 days.

The Spark pegmatite, discovered in

September 2018

and delineated in 2019 and 2021 with four drill

programs (20 holes totaling

5,768.7m

and 14 channels totaling

342.4m

). During 2022 two more drill

programs totaling 50 holes (

15,983.6m

) and

60m

of channel sampling with objectives of upgrading

Inferred mineral resource category to Indicated mineral resource were completed. The results from

all channels and drilling have been previously reported. Figure 1 is a location map showing the

project area.

Figure 1: Location Map showing project area including the Spark Pegmatite (CNW Group/Frontier

Lithium Inc.)

Geological logging of channels and drill core combined with multi-element geochemistry indicates a

high degree of compositional homogeneity throughout the deposit. The pegmatite consists primarily

of spodumene-bearing sodic aplite which is typically fine to medium grained, light grey to greenish

grey locally with coarser zonations consisting of megacrystic feldspar, fine to coarse-grained light

grey to white spodumene, grey quartz and variable amounts of muscovite. The coarser grained

zones are similar in appearance and composition to the LIZ (Lower Intermediate Zone) at the PAK

deposit 2.3 km to the southwest.

Figure 2 is a plan-view compilation map showing the surface exposure and trace of the drill holes

and channels completed at the Spark pegmatite.

Figure 2: Compilation of the Spark Pegmatite (CNW Group/Frontier Lithium Inc.)

Figure 3 is a 3D rendering of the pegmatite solid and pit shell of the Spark pegmatite. The deposit's

current dimensions are roughly

500m

in length by up to

250m

in width. Drilling has extended the

mineralized pegmatite to a depth of approximately

400m

. It remains open in all directions.

Figure 3: 3D Rendering of the Spark Pegmatite showing drill holes, channels wireframe and pit shell

used in the Resource Calculation (CNW Group/Frontier Lithium Inc.)

Due Diligence

All scientific and technical information in this release has been reviewed and approved by

Todd

McCracken

, P.Geo., Director – Mining & Geology –

Central Canada

, BBA E&C Inc., the qualified

person (QP) and

Garth Drever

, P.Geo., VP Exploration for Frontier Lithium Inc. the qualified person

(QP) under the definitions established by National Instrument 43-101. Under Frontier's QA/QC

procedures, all drilling was completed by Chenier Drilling Ltd. of

Val Caron, ON

using thin-walled

BTW drill rods (4.2 cm core diameter) 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. 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 halve bagged for analysis. Sample blanks along with lithium, rubidium

and cesium 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

Red Lake

by Frontier employees and then shipped to AGAT Laboratories Ltd. (AGAT) in

Mississauga, ON

for quantitative multi-element analysis. AGAT is an ISO accredited laboratory. The

core is stored on site at the Pakeagama Lake exploration camp.

About Frontier Lithium

Frontier Lithium is a preproduction business with an objective to become a 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 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 one of

North America's

highest-grade lithium resources. The project

encompasses close to 27,000 hectares and remains largely unexplored; however, since 2013, the

company has delineated 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), as well as

the Pennock pegmatite (25 kilometres northwest of PAK deposit within the project claims). A 2021

preliminary economic assessment (National Instrument 43-101 technical report titled "NI 43-101

Technical Report, Pak Property, PAK, Red Lake Mining District,

Ontario, Canada

" by BBA E&C Inc.,

with an effective date of

April 5, 2021

) delivered a fully integrated lithium operation, including the

mine and mill and the conversion plant for production of battery-quality lithium salts.

Forward-looking statements

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. This release includes certain statements that may be deemed "forward-looking

statements". All statements in this release, other than statements of historical facts, that address

future production, reserve potential, exploration drilling, exploitation activities and events or

developments that the Company expects are forward-looking statements. Although the Company

believes the expectations expressed in such forward-looking statements are based on reasonable

assumptions, such statements are not guarantees of future performance and actual results or

developments may differ materially from those in the forward-looking statements. Factors that could

cause actual results to differ materially from those in forward looking statements include market

prices, exploitation and exploration successes, continued availability of capital and financing, and

general economic, market or business conditions. Investors are cautioned that any such statements

are not guarantees of future performance and those actual results or developments may differ

materially from those projected in the forward-looking statements. For more information on the

Company, Investors should review the Company's registered filings available at sedar.com.

SOURCE

Frontier Lithium Inc.

View original content to download multimedia:

http://www.newswire.ca/en/releases/archive/February2023/28/c1950.html

%SEDAR: 00008434E

For further information:

Company Contact Information: Bora Ugurgel, Manager, Investor

Relations, 2736 Belisle Drive Val Caron, ON. P3N 1B3 CANADA, T. +001 705.897.7622, F. +001

705.897.7618

CO: Frontier Lithium Inc.

CNW 10:30e 28-FEB-23