Chinese Firm Confirms Rare Earth Discovery in Tanzania's Njombe Region. Neodymium and Praseodymium Deposits Place Tanzania Deeper Into the Global Clean Energy Supply Chain.

DAR ES SALAAM — A rare earth elements discovery confirmed in Mkiu Village, Ludewa District, Njombe Region is deepening Tanzania's position in the global clean energy mineral supply chain at the moment that position is most strategically consequential. Hongji Mining Co. Ltd, a Chinese company operating in partnership with the Tanzanian government, confirmed the presence of Neodymium and Praseodymium in the 280-square-kilometre Mkiu project area following the conclusion of its first exploration phase. Environmental impact assessments and community compensation agreements are now underway, with over USD 350,000, equivalent to approximately TZS 1 billion, already paid to affected residents. Njombe Resident Mining Officer Engineer Lucas Mlekwa confirmed the discovery to reporters. "We have high hopes that Tanzania will become one of the countries benefiting economically through trade in these minerals in regional and international markets," he said. "These minerals are highly valuable because they are essential in many modern technologies. This marks the beginning of a major economic opportunity for Njombe Region and Tanzania as a whole." Why Neodymium and Praseodymium matter Neodymium and Praseodymium are not obscure industrial inputs. They are the minerals whose magnetic properties are irreplaceable in the motors that power electric vehicles and the generators that convert wind into electricity, making them structurally essential to the global energy transition whose acceleration is the primary demand driver for the rare earth supply chains that every major industrial economy is simultaneously scrambling to secure. Neodymium-iron-boron magnets, whose production requires both minerals, are the highest-performance permanent magnets available and are used in every major electric vehicle motor from Tesla to BYD, in the direct-drive generators of offshore wind turbines, and in the precision motors of advanced electronics and defence systems. There is no commercially viable substitute for these magnets in high-performance applications at current technology levels, which means demand for Neodymium and Praseodymium tracks the electric vehicle and renewable energy deployment curves directly. According to International Energy Agency critical minerals data, demand for rare earth elements in clean energy applications is projected to increase multiple times over current levels by 2040 under central energy transition scenarios, making new supply discoveries at any development stage commercially and strategically significant. Tanzania's rare earth position and what the Njombe discovery adds Tanzania's rare earth oxide reserve estimate stands at 887,000 tonnes with advanced resources exceeding 3.3 million tonnes according to a 2025 geological assessment whose findings place Tanzania among Africa's most significant rare earth geographies. Africa as a continent holds an estimated 1,956,000 tonnes of rare earth oxide reserves with advanced resources exceeding 10,144,000 tonnes across at least a dozen countries, according to the same assessment. The Mkiu discovery in Njombe adds to Tanzania's existing rare earth resource inventory whose scale, combined with the country's graphite deposits at Mahenge and Epanko, the Kabanga nickel resource, and helium in the Rukwa Basin, is creating a critical minerals portfolio whose breadth across multiple energy transition supply chains is increasingly attracting international investor and government attention. The discovery's location in Njombe Region adds geographic diversification to Tanzania's mineral resource map, whose previous critical minerals attention has concentrated on the southern graphite corridor and the Lake Victoria region's nickel deposits. Njombe's agricultural economy, whose tea, timber, and horticulture production has historically defined the region's economic identity, is now hosting an exploration programme whose commercial development would represent a structural addition to the regional economy's productive base rather than a complementary activity to existing sectors. Hongji Mining's Director Yahya Mohamed said the company plans to use modern in-situ leaching technology, designed to reduce the environmental footprint compared with traditional open-pit or underground mining. "We want local communities to benefit directly through employment opportunities, business growth and improved household incomes," he said. In-situ leaching extracts minerals by injecting a solution directly into the ore body and recovering the mineral-laden solution without removing the surrounding rock, a technique that reduces surface disturbance, waste rock generation, and water consumption relative to conventional mining methods whose environmental impact has historically created the community opposition that has delayed or prevented mining development in ecologically sensitive areas. The US-China supply chain competition and what Tanzania's discovery means within it The Mkiu discovery arrives in the middle of the most intense US-China competition over critical mineral supply chains in modern economic history, and its geopolitical significance cannot be separated from that context without misrepresenting the commercial and strategic environment within which Tanzania's minerals governance decisions are being made. China controls approximately 70% of global rare earth mining and over 90% of refining, separation, and magnet manufacturing according to data cited in the article's sourcing, a dominance that was constructed deliberately over four decades through state-directed investment in processing infrastructure, research and development, and the export pricing strategies that made Chinese rare earth products commercially uncompetitive for domestic processing investments in other countries. The United States produces approximately 13% of global raw rare earth ores but retains minimal domestic processing, separation, and magnet manufacturing capacity, making it dependent on Chinese processing for the rare earth magnets that its defence industry, electric vehicle manufacturers, and renewable energy sector require. Analysts assess that the US requires at least ten years to achieve supply independence, a timeline whose political urgency is driving the Trump administration's implementation of measures aimed at accelerating domestic supply chain development while slowing Chinese dominance. As Chinese companies face growing competition in established rare earth geographies including Australia, Canada, and the United States, Africa's rare earth deposits are becoming increasingly central to China's supply chain security strategy. Tanzania's Mkiu discovery, confirmed by a Chinese company operating in partnership with the Tanzanian government, illustrates the pattern that Uchumi360's analysis of China's African investment strategy has consistently documented: Chinese industrial capital identifies and develops the resource assets whose supply chain position it requires before Western competitors establish the financing terms and partnership structures that would create competitive access. The parallel between Mkiu and Tanzania's broader critical minerals position is direct and uncomfortable in its strategic implication. Tanzania holds graphite, nickel, helium, and now confirmed rare earths. The global demand for each of these minerals is growing fastest in the supply chains whose manufacturing value accumulates most heavily in China, South Korea, Japan, Germany, and the United States. As Uchumi360 documented in its analysis of Africa's critical minerals position, Africa supplies the minerals powering the global AI and clean energy transition while China captures the processing and manufacturing value that transforms raw ore into the industrial products whose margin is multiples of the extraction margin Tanzania receives. The Mkiu discovery is valuable. The processing question is what determines whether it is transformationally valuable or simply adds another extractable ore body to the supply chain whose value accumulates elsewhere. The community and environmental dimension Hongji Mining's community engagement record at Mkiu, whose USD 350,000 payment to affected residents preceding the environmental impact assessment represents a more structured community compensation approach than early-phase exploration projects in Tanzania's mining sector have historically applied, sets a baseline whose continuation through the development and operational phases will determine whether the community benefit rhetoric whose articulation characterises every Tanzanian mining project announcement translates into the household income improvement and business growth that Yahya Mohamed described as the company's stated objectives. The in-situ leaching technology whose planned use Hongji has announced carries environmental trade-offs that require acknowledgement alongside its advantages. While it reduces surface disturbance and waste rock generation, in-situ leaching involves the injection of acidic or alkaline solutions into the ore body whose containment must be managed to prevent groundwater contamination whose detection and remediation are technically complex and economically significant. Tanzania's environmental regulatory framework, administered through the National Environment Management Council, will need to assess Hongji's environmental impact documentation against the specific hydrogeological conditions of the Mkiu site before approving any transition from exploration to development operations. What Tanzania's minerals governance must address The Mkiu discovery, combined with Tanzania's existing graphite, nickel, and helium assets, creates the mineral portfolio whose commercial development could generate substantial economic benefits for Tanzania's treasury, regional economies, and local communities. Whether those benefits are maximised or dissipated depends on the minerals governance decisions that Tanzania's Ministry of Minerals, Tanzania Investment and Special Economic Zones Authority, and Tanzania Revenue Authority make collectively across licensing terms, royalty structures, local content requirements, processing obligations, and export taxation that together determine the value retained domestically relative to the value exported in raw form. According to UNCTAD's Economic Development in Africa Report, African countries have historically retained approximately 5 to 15% of the economic value generated from the mineral resources they host, with the remainder accumulating in the processing, manufacturing, logistics, and financial services stages whose geographic location outside Africa concentrates the value chain margin in industrial economies. Tanzania's graphite sector provides the most proximate cautionary case: Tanzania holds some of the world's largest graphite deposits, multiple companies have obtained exploration and development licences, and the majority of Tanzania's graphite production currently exports as raw flake graphite rather than as the spherical graphite, battery anode material, or graphene products whose manufacturing value per tonne is multiples of the raw flake export price. The rare earth sector's processing economics are even more concentrated. According to US Geological Survey mineral commodity data, the value addition between raw rare earth ore and finished neodymium-iron-boron magnets involves processing, separation, alloying, and magnet manufacturing stages whose combined margin is 10 to 50 times the extraction margin depending on the specific product and application. Tanzania establishing domestic rare earth processing capacity that captures even one additional value chain stage beyond raw ore export would transform the Mkiu discovery's economic contribution to the Tanzanian economy in ways that the ore-only export model does not. This is the strategic question that Njombe Resident Mining Officer Mlekwa's optimism about Tanzania becoming one of the countries benefiting economically through trade in these minerals must eventually answer. Benefiting through trade in raw ore and benefiting through trade in processed products are categorically different economic outcomes whose distinction Tanzania's minerals governance must embed in the licensing conditions and local processing obligations that Hongji Mining's development phase agreement must contain. The African rare earth landscape Tanzania's discovery joins a broader African rare earth development picture whose advancement is creating the continental supply alternative that both Western governments seeking to diversify away from Chinese supply and Chinese companies seeking to secure additional non-domestic supply are actively financing. Angola's Ozango project is advancing production. Malawi's Songwe Hills deposit is nearing commercialisation. South Africa's Steenkampskraal and Zandkopsdrift sites host some of the continent's most established rare earth reserves. Exploration is progressing in Kenya, Namibia, and Botswana, where early drilling has revealed deposits containing the full suite of 17 rare earth elements alongside battery metals. Africa's combined rare earth resource base, estimated at advanced resources exceeding 10 million tonnes of rare earth oxide, represents the most significant alternative to Chinese supply whose development trajectory is technically advanced enough to be commercially relevant within the decade-long window that US supply independence analysts have identified as the critical timeframe. Whether Africa captures the processing value from that resource base or supplies the ore that Chinese, Japanese, South Korean, and Western processors convert into the industrial products whose margin defines the supply chain's economic geography will be determined by the minerals governance decisions that Tanzania, Malawi, Angola, South Africa, and their neighbours make in the licensing negotiations happening now. Tanzania has the minerals. The discovery in Njombe confirms it again. The question that the discovery cannot answer, but that Tanzania's government must, is what share of the value those minerals generate stays in Tanzania. FAQ What minerals were discovered at Mkiu and why do they matter? Neodymium and Praseodymium were confirmed at Mkiu Village, Ludewa District, Njombe Region. These are rare earth elements whose magnetic properties are irreplaceable in electric vehicle motors, wind turbine generators, and advanced electronics. Neodymium-iron-boron magnets, which require both minerals, are the highest-performance permanent magnets available and are used in every major EV motor and direct-drive offshore wind generator. There is no commercially viable substitute in high-performance applications at current technology levels, making demand track the global energy transition acceleration directly. What is Tanzania's total rare earth reserve position? According to a 2025 geological assessment, Tanzania holds an estimated 887,000 tonnes of rare earth oxide reserves and 3.3 million tonnes of advanced resources. Africa as a continent holds an estimated 1,956,000 tonnes of REO reserves and advanced resources exceeding 10,144,000 tonnes across at least a dozen countries. The Mkiu discovery adds to Tanzania's existing rare earth resource inventory rather than representing the country's first rare earth presence. Who is Hongji Mining and what is its relationship with the Tanzanian government? Hongji Mining Co. Ltd is a Chinese company operating in partnership with the Tanzanian government at the Mkiu project. The company has completed its first exploration phase across the 280-square-kilometre project area and has paid over USD 350,000 to affected residents ahead of environmental impact assessments. Director Yahya Mohamed stated the company plans to use in-situ leaching technology to reduce environmental impact and intends that local communities benefit through employment and business opportunities. Why does this discovery matter geopolitically? Because China controls 70% of global rare earth mining and over 90% of refining, separation, and magnet manufacturing, while the US produces approximately 13% of global raw ores and is assessed to require at least ten years to achieve supply independence. Tanzania's discovery, confirmed by a Chinese company, illustrates the pattern of Chinese industrial capital identifying and developing African resource assets whose supply chain position it requires before Western competitors establish competing access. Africa's combined advanced rare earth resources exceeding 10 million tonnes represent the most significant alternative to Chinese supply whose development is technically advanced enough to be commercially relevant within the critical decade-long window. What is the most important question Tanzania's minerals governance must answer? Whether Tanzania retains processing value beyond raw ore export. The value addition between raw rare earth ore and finished neodymium-iron-boron magnets involves processing, separation, alloying, and manufacturing stages whose combined margin is 10 to 50 times the extraction margin. Africa has historically retained approximately 5 to 15% of the economic value generated from its mineral resources according to UNCTAD data. Tanzania's graphite sector, where most production exports as raw flake rather than processed battery anode material, provides the cautionary precedent. The licensing conditions and local processing obligations in Hongji Mining's development phase agreement will determine whether Mkiu becomes an ore export or a value-added processing story.