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

MNRG.V ·

Monumental Minerals Begins Drilling at the Jemi Heavy Rare Earth Element Project, Mexico

Exploration Programs

MONUMENTAL MINERALS BEGINS DRILLING

AT THE JEMI HEAVY RARE EARTH ELEMENT

PROJECT, MEXICO

VANCOUVER, BC

,

July 12, 2023

/CNW/ - Monumental Minerals Corp. ("

Monumental

" or the

"

Company

") (TSXV: MNRL) (FSE: BE5) (OTCQB: MNMRF) is pleased to announce the

commencement of drilling at the Jemi rare earth element (REE) project (the "

Project

") in

Coahuila,

Mexico

, about 40 km south of the

Texas, USA

border.

A diamond drill rig from Globexplore Drilling SA is now aligned on the first drill target (Figure 1), on

the Veladora North prospect area within Monumental's claims. The drilling will test areas with high

concentrations of REE-mineralized dykes and sills at the surface, and the Company's REE deposit

model for Jemi. The model was developed based on detailed geological mapping, regional stream

sediment sampling, ground radiometric geophysical surveys, and lithogeochemical sampling (see

Company's news release dated

April 4, 2023

) and suggests a mineralized REE layered intrusion

(source of the dykes and sills) exists at a depth of less than

300 m

. Monumental is planning to test a

total of 6 drill targets to approximately

300 m

each during this maiden campaign.

The Jemi project is characterized by broad areas of peralkaline intrusion-related REE mineralized

dykes and sills at the margins of the

La Vasca

igneous complex. These intrusive bodies contain high

grades of heavy rare earth elements (HREEs) dysprosium (Dy) and terbium (Tb), light rare earth

elements (LREEs) neodymium (Nd) and Praseodymium (Pr), all critical to permanent magnets for

EVs. Additionally, samples contain high concentrations of niobium (Nb) and tantalum (Ta).

Dr.

Jamil Sader

, CEO and Director comments:

"Drilling at the Jemi REE project is underway, and we are optimistic that it will be able to

validate the source of the mineralized dykes and sills, and the model we developed through

extensive and pragmatic exploration activities in 2022 and 2023. Jemi has similar

characteristics to other well defined hardrock peralkaline REE systems globally and has the

added benefit of being on the doorstep of

Texas

, a fast-growing hub for REE processing,

refinement, and consumer goods manufacturing."

Figure 1. Globexplore Drilling SA at the Jemi REE Project, Coahuila Mexico. (CNW

Group/Monumental Minerals Corp.)

Rare Earth Element Value and the Global Energy Transition

Because of their unusual physical and chemical properties, REEs have diverse energy, industrial,

and military technology applications. It is projected that rare earth magnets will maintain dominant

market share, powering EVs as well as other types of electric motors (e.g., wind turbines, water

pumps) this decade, as there is minimal to no substitution risk. Significant demand growth is

therefore expected for key magnet rare earths (Nd, Pr, Dy, and Tb) is likely to continue

1

. The

strongest magnets are neodymium-iron-boron (NdFeB) and are used when space and weight

restrictions are present. The addition of terbium and dysprosium to NdFeB magnets can double their

optimal operating temperature from 80°C to 160°C. In addition, dysprosium with praseodymium

increases a magnet's coercivity (the resistance of a magnetic material to change in magnetisation).

The four key REEs (Nd, Pr, Dy, Tb) represent 94% of the REE market by value, all of which are

significantly elevated at Jemi. Concentrations of Nb and Ta are also present that are potentially

economically significant.

______________________________

1

BMO Capital Markets, Into the Abyss: A Supply-Chain Deep Dive from Rare Earth to Permanent Magnets, May 31, 2022.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and

approved by Kristopher J. Raffle, P.Geo. (BC) Principal and Consultant of APEX Geoscience Ltd. of

Edmonton, AB

, a Director of the Company and a "Qualified Person" as defined in National

Instrument 43-101 –

Standards of Disclosure

for Mineral Projects

. Mr. Raffle verified the data

disclosed which includes a review of the sampling, analytical and test data underlying the information

and opinions contained therein.

About Monumental Minerals Corp.

Monumental Minerals Corp. is a mineral exploration company focused on the acquisition, exploration,

and development of mineral resource properties in the critical and electric metals sector. The

Company's flagship asset is the Jemi HREE project located in

Coahuila, Mexico

near the

Texas,

USA

border which the Company has an option to acquire 100% of the 3,650-hectare project. The

Company has an option to acquire a 75% interest and title to the Laguna cesium-lithium brine project

located in

Chile

and a 50.01% interest in the Salar De Turi lithium project in

Chile

.

On behalf of the Board of Directors,

/s/ "Jamil Sader"

Jamil Sader

,

Chief Executive Officer and Director

Contact Information:

Email:

[email protected]

Or

Max Sali

,

VP Corporate Development and Director

Email:

[email protected]

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 news release.

Forward Looking Information

This news release contains "forward–looking information or statements" within the meaning of

applicable securities laws, which may include, without limitation, the potential plans for the

Company's projects, the expected timing and completion of potential drilling at Jemi and the receipt

of assays, potential outcomes and results of the drill program, other statements relating to the

technical, financial and business prospects of the Company, its projects and other matters. All

statements in this news release, other than statements of historical facts, that address events or

developments that the Company expects to occur, 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 may differ materially from those in the forward-looking statements. Such statements are

based on numerous assumptions regarding present and future business strategies and the

environment in which the Company will operate in the future, including the price of metals, the ability

to achieve its goals, that general business and economic conditions will not change in a material

adverse manner and that financing will be available if and when needed and on reasonable terms.

Such forward-looking information reflects the Company's views with respect to future events and is

subject to risks, uncertainties and assumptions, including the risks and uncertainties relating to the

interpretation of exploration results, risks related to the inherent uncertainty of exploration and cost

estimates and the potential for unexpected costs and expenses and those other risks filed under the

Company's profile on SEDAR at

www.sedar.com

. While such estimates and assumptions are

considered reasonable by the management of the Company, they are inherently subject to significant

business, economic, competitive and regulatory uncertainties and risks. Factors that could cause

actual results to differ materially from those in forward looking statements include, but are not limited

to, continued availability of capital and financing and general economic, market or business

conditions, failure to secure personnel and equipment for work programs, adverse weather and

climate conditions, risks relating to unanticipated operational difficulties (including failure of

equipment or processes to operate in accordance with specifications or expectations, cost

escalation, unavailability of materials and equipment, government action or delays in the receipt of

government approvals, industrial disturbances or other job action, and unanticipated events related

to health, safety and environmental matters), risks relating to inaccurate geological assumptions,

failure to maintain all necessary government permits, approvals and authorizations, failure to obtain

surface access agreements or understandings from local communities, land owners or Indigenous

groups, fluctuation in exchange rates, the impact of Covid-19 or other viruses and diseases on the

Company's ability to operate, an inability to predict and counteract the effects of COVID-19 on the

business of the Company, including but not limited to, the effects of COVID-19 on the price of

commodities, capital market conditions, restriction on labour and international travel and supply

chains, decrease in the price of rare earth elements, lithium, cesium and other metals, loss of key

employees, consultants, or directors, failure to maintain community acceptance (including from the

Indigenous communities), increase in costs, litigation, and failure of counterparties to perform their

contractual obligations. The Company does not undertake to update forward–looking statements or

forward–looking information, except as required by law.

SOURCE

Monumental Minerals Corp.

View original content to download multimedia:

http://www.newswire.ca/en/releases/archive/July2023/12/c0981.html

%SEDAR: 00050941E

CO: Monumental Minerals Corp.

CNW 08:00e 12-JUL-23