Saturday, September 26, 2026
MiningNewsTerminal
Saturday, September 26, 2026 Admin

AMCO.V ·

Millennial Expands Lithium Brine Horizon at Pastos Grandes

Corporate Updates

Suite 2000 – 1177 West Hastings Street

Vancouver, BC Canada V6E 2K3

Tel: 604-662-8184 Fax: 604-602-1606

www.millenniallithium.com

October 15, 2018

Millennial Expands Lithium Brine Horizon

at Pastos Grandes

Millennial Lithium Corp. (ML: TSX.V) (A3N2:GR: Frankfurt) (MLNLF: OTCQB)

(“Millennial” or the “Company”) is pleased to report positive drilling and analytical results

from the latest exploration wells at its Pastos Grandes Project in Salta, Argentina. Two new

exploration holes (PGMW18-16 and 17) have intersected, and bottomed in, lithium-bearing

brine zones, with PGMW18-17 intersecting po sitive lithium grades in a 545 meter thick

lithium-bearing horizon, including a high grade of 701 mg/L Li . A 40 person camp is being

installed at the site, including a state of the art solar-hybrid power system as work advances

at the site on a pilot plant to produce battery grade lithium carbonate.

Millennial is also pleased to announce that it has engaged Credit Suisse to act as a lead

financial advisor to assist th e Company with respect to potential future project financing

alternatives and ongoing strategic discussions.

Millennial CEO, Farhad Abasov, commented: "We are very encouraged to see that drilling on

the REMSA license at Pastos Grandes salar co ntinues to encounter lithium-rich brine,

significantly extending the area of known lithium-rich brine further west toward the edge of

the salar. Millennial has already started a full feasibility study on its lithium brine project in

Pastos Grandes, Salta, which is scheduled to be completed in Q2 2019. Millennial is fully

funded to complete the feasibility study as well as all other programs with a very strong cash

balance of C$56 million. The Co mpany is embarking on a proce ss of securing construction

financing which is planned to be concluded in 2019.”

Exploration holes PGMW18-16 and PGMW18-17 were drilled to depths of 641 metres (m), and

605m respectively and both wells terminated in brine-bearing sand. These holes confirm the

extension of the brine on to the contiguous REMSA license southeast and southwest of the

original core Pastos Grandes licenses suggesting additional potential to expand the currently

calculated resource beyond the initial Pastos Grandes licenses.

Exploration well PGMW18-16, drilled to a final depth of 641m close to the southern margin of

the basin, was sampled using a double packer system which is designed to isolate sample

intervals. Thirteen brine samples were collected from between depths of 75m to 641m (566m

interval). This area was found to be dominated by halite with minor sand and clay seams. A

zone of halite with sand and minor clay fr om 306m to 374m (68 m thickness) yielded an

average of 499 mg/L Li with an Mg:Li of 7.1 and an SO 4:Li of 21.2. The well bottomed in a

halite-sand unit which yielded 495 mg/L Li, an Mg/Li of 6.5 and an SO4/Li of 22.9 from 624m

to 641m (see Table 1) indicating the lithium zone remains open at depth. Exploration well

PGMW18-16 is located approximately 2 km southeast of well PGMW18-12 and the significant

halite section in this well suggests it may occupy the depocenter of the basin.

Table 1 Summary of Current drill results.

HOLE ID FROM (m) TO (m) THICKNESS (m) Li (mg/l) Mg/Li SO4/Li

PGMW18-16 306 374 68 499 7.1 21.2

PGMW18-16 624 641 17 495 6.5 22.9

PGMW18-17 60 605 545 444 6.0 pending

Well PGMW18-17 is located approximately 1500m southwest of PGMW18-12 and was drilled

to a depth of 605m. Twenty-nine brine samples were taken by packer sampling with the well

dominated by halite from surface to 194m and then by fine- to medium-grained sand to the

bottom of the well. The entire section in well PGMW18-17 is enriched in lithium returning 444

mg/L Li from 60m to 605m (545m thickness) and an Mg/Li of 6.0. The maximum Li value

obtained was 701 mg/L Li at a depth of 135 m. Well PGMW18-17 bottomed in lithium brine

rich sands (last sample returned 519 mg/L Li) as the hole was terminated at 605m due to

limitations of the drilling machine.

Exploration drilling is ongoin g with a rig currently at PG MW18-18, located approximately

2000m south of PGMW18-15 in the southwest co rner of the REMSA lic ense. Drilling is

currently at a depth of 389m; the second drilling machine is mobilizing to PGMW18-19 located

about 1,000m northeast of PGMW18-12. In addition, the 21 day pumping test at PGPW17-

04 has been completed and data compilation is underway. Two pumping well drill machines

have been mobilized to site to expedite addi tional pumping tests. Pi lot evaporation ponds,

approximately 3.25 ha in size, have now been f illed with brine to provide concentrated Li

plant-grade feed for the Company’s pilot plant. The Company has posted a recent time-lapse

video of the construction of the pilot ponds and the reader is encouraged to visit the

Company’s website, www.millenniallithium.com, and view the ongoing progress at its Pastos

Grandes Project.

Sampling was conducted in accordance with CIM guidelines for brine resource evaluation, with

an appropriate QA/QC program in place for ensuring accuracy and precision of the analytical

results.

The primary analytical laboratory for the data used in this program is the SGS Laboratory in

Buenos Aires, Argentina. SGS is accredited to ISO 9001:2008 and ISO14001:2004 for their

geochemical and environmental labs for the pr eparation and analysis of numerous sample

types, including brines.

This news release has been reviewed by Iain Scarr, AIPG CPG., Chief Operating Officer of the

Company and a Qualified Person as that term is defined in National Instrument 43-101.

To find out more about Millenni al Lithium Corp. please contac t Investor Relations at (604)

662-8184 or email [email protected].

MILLENNIAL LITHIUM CORP.

“Farhad Abasov”

President and CEO, Director

Suite 2000 – 1177 West Hastings Street

Vancouver, BC Canada V6E 2K3

Tel: 604-662-8184 Fax: 604-602-1606

www.millenniallithium.com

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 news release may contain certain “Forward-Looking Statements” within the meaning of the United States Private Securities

Litigation Reform Act of 1995 and applicable Canadian securities laws. When used in this news release, the words “anticipate”,

“believe”, “estimate”, “expect”, “target, “plan”, “forecast”, “may”, “schedule” and similar words or expressions identify forward-looking

statements or information. These forward-looking statements or in formation may relate to future prices of commodities, accurac y of

mineral or resource exploration activity, reserves or resources, regulatory or government requirements or approvals, the reliab ility of

third party information, continued access to mineral properties or infrastructure, currency ris ks including the exchange rate o f USD$

for Cdn$, fluctuations in the market for lithium, changes in exploration costs and government royalties or taxes (including export duties

or tariffs) in Argentina or other jurisdictions and other factors or information. Such statements represent the Company’s current views

with respect to future events and are necessarily based upon a number of assumpti ons and estimates that, while considered

reasonable by the Company, are inher ently subject to significant business, econom ic, competitive, political and social risks,

contingencies and uncertainties. Many factor s, both known and unknown, could cause re sults, performance or achievements to be

materially different from the results, performance or achievements that are or may be expressed or implied by such forward-look ing

statements. The Company does not intend, and does not assume any obligation, to update these forward-looking statements or

information to reflect changes in assumpti ons or changes in circumstances or any ot her events affections such statements and

information other than as required by applicable laws, rules and regulations.