Longonjo neodymium/praseodymium project, Angola

Mounds of rare earths

22nd September 2023

By: Sheila Barradas

Creamer Media Research Coordinator & Senior Deputy Editor


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Name of the Project
Longonjo neodymium/praseodymium project.

Huambo, Angola – 4 km from a modern rail line leading directly into the Atlantic Ocean Port of Lobito.

Project Owner/s
Pensana Rare Earths holds an 84% interest in Longonjo through its 84% holding in Angola-registered company Ozango Minerais, which, in turn, owns 100% of the mining licence.

The Angolan government holds a 10% interest and the company’s Angolan partners hold the remaining 6%.

Project Description
Longonjo is one of the biggest rare earths deposits in the world, with an initial 20-year mine life.

The project has total proven and probable reserves of 30.1-million tonnes grading at 0.55% neodymium/praseodymium oxide for 166 000 t neodymium/praseodymium and total rare-earth oxide (TREO) of 767 000 t.

The mine execution plan is based on a staged development of the mine and processing facilities.

At full production, once the phased development is complete, the Longonjo mine will target production of up to 38 000 t/y of mixed rare-earth double sulphate or mixed rare-earth carbonate, containing 14 000 t of TREO and up to 4 400 t of neodymium/praseodymium oxide, equating to about 5% of the worldwide production of neodymium/praseodymium oxides a year for downstream processing or to be sold on the international market.

Potential Job Creation
The mine will employ about 650 people during construction and will create 420 permanent high-value jobs.

Net Present Value/Internal Rate of Return
Not stated.

Capital Expenditure
Initial capital costs are estimated at $200-million.

Planned Start/End Date
The project can be put into production in less than 18 months.

Latest Developments
None stated.

Key Contracts, Suppliers and Consultants
None stated.

Contact Details for Project Information
Pensana Rare Earths, email

Edited by Martin Zhuwakinyu
Creamer Media Senior Deputy Editor



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