Five Bidders Compete for Kenya’s Mrima Hill Critical Minerals Project

Kenya is preparing to select a developer for the Mrima Hill rare earths and niobium deposit after five bidding groups submitted proposals, with the competition attracting strong interest from US-linked companies following the withdrawal of two Chinese bidders.

Mining Cabinet Secretary Hassan Ali Joho told Reuters on 30 October that the government expected to announce its preferred developer within two to three weeks. The bids were submitted on 21 October for the project in Kwale County, approximately 65 kilometres southwest of Mombasa.

The remaining contenders include Meridian Mineral Holdings, which involves US engineering company Fluor and Tetra Tech; Frontier Minerals, which includes ReElement Technologies; Critical Metals-backed Mrima Earth; an Australian partnership between RareX and Iluka Resources; and the Kenyan-British joint venture Gem of Dreams.

The two Chinese companies that withdrew were Hunan Research Institute for Nonferrous Metals and Jinan Yuxiao Group. The government has not disclosed why they left the process.

A Strategic Mineral Deposit

Mrima Hill has attracted international attention because of its reported rare earths and niobium potential. Kenya's government considers both mineral groups strategic resources and has launched a competitive tender to identify a qualified developer.

The deposit has a long exploration history. Kenya's Mines and Geological Department identified it in the 1930s, followed by exploration involving Anglo American Corporation in the 1950s. That work included more than 9,000 metres of test shafts and over 3,000 metres of drilling.

More recent geological work has identified niobium, yttrium, thorium, strontium and lanthanum in the area. The prospect covers approximately 31.9 square kilometres.

Rare earth elements are used in permanent magnets, electronics and various advanced manufacturing applications. Niobium is used in specialised steel alloys and aerospace applications, making both mineral groups important to industrial supply chains.

However, the government's project documentation states that it has not prepared an economic viability report for the prospect. The reported value of the deposit should therefore not be treated as confirmed recoverable mineral value or a completed project valuation.

Competition for Critical Minerals

The bidding process comes as the United States seeks to diversify critical mineral supply chains and reduce dependence on China, which dominates several stages of rare earth processing and has tightened export controls on selected materials.

Fluor's involvement gives the Meridian Mineral Holdings consortium engineering and project development experience. Fluor previously built a rare earth refinery for Iluka Resources in Australia.

That connection has also raised a potential intellectual property dispute. A representative associated with the RareX-Iluka partnership warned that the group could pursue legal action if Fluor used Iluka's intellectual property in connection with a proposed processing facility at Mrima Hill.

Kenya's mining minister said the government was not under pressure from Washington or Beijing and would select a developer through a transparent process based on the country's national interests.

What Happens Next?

The immediate decision is the award of mineral rights to the successful bidder. Under Kenya's tender framework, the selected developer would receive a prospecting licence and would still need to undertake detailed exploration and assess the project's commercial viability.

The government has set expectations for bidders to demonstrate financial capacity, technical expertise, suitable management and experience developing specialist mineral deposits.

The winning proposal will be important not only for exploration but also for how Kenya approaches the development of strategic minerals. The government will need to assess the project's geological potential, the developer's ability to finance further work and the prospects for turning the deposit into a commercially viable mining operation.