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International Lithium Announces Mavis Lake Lithium Project Assays Confirm Wide Spodumene-Bearing Pegmatite Intersections

Drill Results

NEWS RELEASE

International Lithium Announces Mavis Lake Lithium

Project Assays Confirm Wide Spodumene-Bearing

Pegmatite Intersections

Vancouver, B.C. April 9, 2018 : International Lithium Corp. (the “ Company” or “ ILC”) (TSX

VENTURE: ILC) , in conjunction with its joint venture partner , Pioneer Resources Limited

(“Pioneer”), is pleased to provide the results of a successful drilling program at the Mavis Lake

Lithium Project in the province of Ontario, Canada (see Company news releases February 19,

2018 and January 23, 2018).

The program, targeting the Fairservice Pegmatite 6 Prospect, consisted of nine diamond core

holes for a total of 1,591 metres , and delivered multiple intersections of spodumene -bearing

pegmatite in all nine holes.

As reported in Pioneer’s April 6, 2018 news release, seven of the nine drillholes intersected

significant mineralization.

STANDOUT INTERSECTION* | MF18-53: 55.25m at 1.04% Li2O from 82.75m

Other intersections* of spodumene-bearing pegmatites returned:

 MF18-58: 28.95m at 1.14% Li2O from 116.8m

 MF18-51: 23.30m at 1.09% Li2O from 76.8m

 MF18-52: 13.45m at 1.17% Li2O from 149.95m

 MF18-54: 18.20m at 1.27% Li2O from 94.8m and

 MF18-54: 6.10m at 2.33% Li2O from 139.25

 MF18-55: 12.35m at 1.41% Li2O from 135.14m

* All reported widths are drill hole widths and have not been converted to true width. T rue

width is unknown at this time.

Pioneer state s in its news release that these drilling results enhance the prospectivity of the

project, with Pioneer’s Managing Director, David Crook, announcing, “The 2018 step-out drilling

program confirmed and improved upon the very encouraging lithium intersections achieve d in

the 2017 drilling program.”

1111 Melville Street, Suite 1100

Vancouver, British Columbia

V6E 3V6, Canada

T: 604-700-8912

[email protected]

www.internationallithium.com

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ABOUT THE MAVIS LAKE FAIRSERVICE PROSPECT

 The Fairservice Prospect of the Mavis Lake Project comprises a swarm of 6 pegmatites

that outcrop at surface over an east-west strike length of 700m.

 Drilling completed during the 2018 winter intersected the Fairservice Pegmatite 6 ,

generally between 100 and 140m vertically below surface along a strike length of 200m.

 Results of drilling complemented 2017 drill results in this area, with all 2018 holes

intersecting one or two minerali zed pegmatite lenses on step -outs of between 20 and

40m.

 Future drilling will test the spodumene -bearing pegmatite further along strike and at

progressively shallower depths.

Table 1: Significant Drill Results at the Fairservice Prospect, Mavis Lake.

Fairservice Prospect: Significant Drilling intersections*

Hole ID From

(m)

To

(m)

Intersection

(m)

Lithia

(Li20 %)

MF18-51 76.80 100.10 23.30 1.09

Including 87.75 100.10 12.35 1.50

MF18-51 119.95 129.20 9.25 1.47

MF18-52 83.30 89.65 6.35 1.32

MF18-52 150.45 161.00 10.55 1.18

Including 154.55 161.00 6.45 1.56

MF18-53 80.75 136.00 55.25 1.04

Including 82.70 89.30 6.60 1.47

Including 115.50 117.90 2.40 2.61

Including 122.30 132.75 10.45 1.54

MF18-54 94.80 113.00 18.20 1.27

Including 107.80 113.00 5.20 2.42

MF18-54 139.25 145.35 6.10 2.33

MF18-55 135.10 147.45 12.35 1.41

MF18-56 142.10 148.90 6.80 1.26

MF18-57 141.53 151.20 9.67 1.23

Including 143.25 149.20 5.95 1.63

MF18-58 55.00 58.65 3.65 1.87

MF18-58 116.80 145.75 28.95 1.14

Including 119.75 128.95 9.20 1.80

MF18-59 144.80 152.35 7.55 1.30

* All reported widths are drill hole intersection widths and have not been converted to true width.

True width is unknown at this time. Intersections > 0.5% Li2O (including >1.00% Li2O)

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Table 2: Current program’s drill hole locations (Projection/Datum: UTM15N/NAD83).

Hole ID Easting Northing Elevation Azi: Dip Depth

MF18-51 524387 5518072 420 175.0 -75.0 179.0

MF18-52 524390 5518074 420 110.0 -61.0 177.0

MF18-53 524387 5518074 420 226.0 -72.0 185.0

MF18-54 524486 5518089 438 206.0 -53.0 161.0

MF18-55 524486 5518089 438 166.0 -65.0 170.0

MF18-56 524486 5518089 438 142.0 -67.0 170.0

MF18-57 524387 5518104 418 218.0 -54.0 188.0

MF18-58 524389 5518041 420 260.0 -72.0 179.0

MF18-59 524389 5518041 420 265.0 -52.0 182.0

Drilling at the Mavis Lake Lithium Project was designed to test for extensions to spodumene -

bearing pegmatites intersected at the Pegmatite 6 Prospect in the 2017 drilling season. The

2018 drilling program has been successful in its objective by confirming mineralization along

strike of the mineralization previously encountered at the Pegmatite 6 area.

Sampling Protocol and QA/QC

 All drill holes were NQ2 sized diamond drill holes. Core was orientated and

measurements collected relative to bottom line using the Reflex ACT II core orientation

system.

 Certified Reference Material (“CRM”) was developed from trench material collected on

the property. CRMs were inserted with a sampling density of 5.0% at random intervals

to provide assay quality checks. Quartz and limestone blanks were also inserted in to the

sampling stream on density of 5.0%. The standards reported are within acceptable limits.

 Core samples were selected typically between 1 to 2m samples of half core. Samples

were up to 2.5m in length and narrow as 0.3m. Samples did not cross lithological

boundaries. Phases identified within the pegmatites were samples separat ely for better

characterization.

 Approximately 2kg per m of core in sample were crushed with 80% passing 2mm; a

250g split was then pulverized to 95% passing 105µ.

 Samples were analysed using a sodium peroxide fusion digestion with ICP -AES or ICP-

MS with graphite crucibles finishing. SGS Lakewood GE_IC90A and GE_IC90M.

Afzaal Pirzada, P.Geo., Consultant to the Company and a “Qualified Person” for the purposes of

National Instrument 43 -101 - Standards of Disclosure for Mineral Projects , has reviewed and

approved the scientific and technical information contained in this news release.

About the Mavis Lake Lithium Project

The Mavis Lake Project is situated 19 kilometres east of the town of Dryden, Ontario. The

Project is ideally situated in close vicinity to the Trans -Canada high way and railway major

transportation arteries linking larger cities such as Thunder Bay, Ontario, to the southeast and

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Winnipeg, Manitoba, to the west.

The current drill program has been wholly funded by Pioneer as part of its earn -in on the Mavis

Lake Project (see Company news release dated March 14, 2016).

The Mavis and Raleigh projects are under option to strategic partner Pioneer Resources Limited

(ASX: PIO) pursuant to which Pioneer can acquire up to a 51% interest in the projects.Once the

earn-in has been completed and this option exercised, the Company will need to contribute to

ongoing funding costs of the projects if it is to avoid dilution . An announcement will be made

when there is an update on this position.

About International Lithium Corp.

International Lithium Corp. has a significant portfolio of projects, strong management, and a

strategic partner and keystone investor, Jiangxi Ganfeng Lithium Co. Ltd., (“Ganfeng Lithium”) a

leading China-based lithium product manufacturer.

The Company’s primary focus is the strategic stake in the Mariana lithium -potash brine project

located within the renowned South American “Lithium Belt” that is the host to the vast majority of

global lithium resources, reserves and production. The Mariana project strategically

encompasses an entire mineral rich evaporite basin, totaling 160 square kilometres that ranks

as one of the more prospective salars or ‘salt lakes’ in the region. Current ownership of the

project is through a joint venture company, L itio Minera Argentina S. A., a private company

registered in Argentina, ownership of which will be revised shortly to 82.754% by Ganfeng

Lithium and 17.246% by ILC in order to reflect each party’s current JV interest. In addition, ILC

has an option to acquire 10% in the Mariana project through a back-in right.

Complementing the Company’s lithium brine project are three rare metals pegmatite properties

in Canada known as the Mavis, Raleigh, and Forgan projects, and the Avalonia project in

Ireland, which encompasses an extensive 50km-long pegmatite belt.

The ownership of the Avalonia project is currently 55% GFL and 45% ILC. GFL have an option

to earn an additional 24% by either incurring CDN$10 million expenditures on exploration

activities or delivering a positive feasibility study on the project, at which time the ownership will

be 79% GFL and 21% ILC.

The Mavis and Raleigh projects are under option to strategic partner Pioneer Resources Limited

(ASX: PIO) pursuant to which Pioneer can acquire up to a 51% interest in the projects.

The Mavis, Raleigh and Forgan projects together form the basis of the Company’s Upper

Canada Lithium Pool designated to focus on acquiring numerous prospects with previously

reported high concentrations of lithium in close proximity to existing infrastructure.

With the increasing demand for high tech rechargeable batteries used in vehicle propulsion

technologies and portable electronics, lithium is paramount to tomorrow’s “green -tech”,

sustainable economy. By positioning itself with solid strategic partners and acquiring high quality

assets for the Energy rEVolution supply chain, ILC aims to be the partner of choice for investors

in green-tech and to continue to build value for its shareholders.

About Pioneer Resources Limited

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Pioneer is an active exploration company focused on key global demand -driven commodities.

This includes a portfolio of strategically located lithium, caesium, nickel, cobalt and gold projects

in mining regions in Western Australia, plus a portfolio of high quality lithium assets in Canada.

On behalf of the Company,

Anthony Kovacs

Chief Operating Officer

www.internationallithium.com

For further information concerning this news release please contact +1 604-700-8912

Neither 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 Statement Regarding Forward-Looking Information

Except for statements of historical fact, this news release contains certain “forward -looking

information” within the meaning of applicable securities law. Forward -looking information or

forward-looking statements in this news release may include: the timi ng and anticipated results

of drilling on the Mavis Lake Project, the expectation of feasibility studies, lithium recoveries,

modeling of capital and operating costs, results of studies utilizing membrane technology at the

Mariana Project, budgeted expenditures and planned exploration work on the Avalonia JV, and

continued agreement between the Company and Jiangxi Ganfeng Lithium Co. Ltd. regarding the

Company’s percentage interest in the Mariana project. Such forward -looking information is

based on a number of assumptions and subject to a variety of risks and uncertainties, including

but not limited to those discussed in the sections entitled “Risks” and “Forward -Looking

Statements” in the interim and annual Management’s Discussion and Analysis which are

available at www.sedar.com. While management believes that the assumptions made are

reasonable, there can be no assurance that forward -looking statements will prove to be

accurate. Should one or more of the risks, uncertainties or other factors materialize, or should

underlying assumptions prove incorrect, actual results may vary materially from those described

in forward-looking information. Forward -looking information herein, and all subsequent written

and oral forward -looking information are based on expec tations, estimates and opinions of

management on the dates they are made that, while considered reasonable by the Company as

of the time of such statements, are subject to significant business, economic and competitive

uncertainties and contingencies. Thes e estimates and assumptions may prove to be incorrect

and are expressly qualified in their entirety by this cautionary statement. Except as required by

law, the Company assumes no obligation to update forward -looking information should

circumstances or management’s estimates or opinions change.

This news release does not constitute an offer to sell or a solicitation of an offer to sell any of the

securities in the United States. The securities referred to herein have not been and will not be

registered under the United States Securities Act of 1933, as amended or any state securities

laws and may not be offered or sold within the United States or to U.S. Persons unless

registered under the U.S. Securities Act and applicable state securities laws or an exempt ion

from such registration is available.