Prospectors hunting tin in the 1920s discovered heavy, dark crystals in the Erongo and Karibib pegmatites—tantalite that later proved crucial to the development of microelectronics, medical devices, and aerospace alloys.
A surge in demand in the 1960s and ’70s briefly rekindled hopes, including in the southern belts, but weak prices and a lack of processing infrastructure kept the metal on the margins.
That is changing, driven by global supply pressures and a growing demand for conflict-free, traceable critical minerals.
First, a snapshot of Namibia’s position in the global context and how projects are priced.
Namibia isn’t yet on the USGS’s world mine-production table for tantalum—2024 output was led by the DRC, Rwanda, Nigeria, Brazil, China and Australia—which underlines that local projects are either pre-production or still small-scale.
As a pricing yardstick for future projects, the USGS put the average 2024 US market price for Ta₂O₅ at about US$170/kg (useful against current spot indications and feasibility numbers).
With that context, one Namibian operation is already producing a tantalum by-product—and that matters.
While most Namibian tantalum stories are about potential, Andrada Mining is already reporting saleable tantalum concentrate as a by-product of tin operations at the Uis mine.
Company updates show 12.1 tonnes of saleable tantalum concentrate produced in Q1 FY2026 (quarter ended May 31, 2025), up from 8.6 tonnes in the comparable quarter. Earlier disclosures noted nine tonnes produced in a quarter, with five tonnes shipped under an offtake to AfriMet, indicating that a regular by-product stream is in place.
The corporate site now describes Uis as having established tin and tantalum concentrate production, reflecting that the tantalum circuit has moved beyond trials.
First, it anchors Namibia’s current tantalum-in-concentrate output, however modest, in a traceable, conflict-free jurisdiction.
Second, the tin-led plant improvements—ore sorting and now a second jig plant being commissioned—tend to lift by-product recoveries over time, supporting a gradual ramp in tantalum alongside tin and lithium workstreams.
Beyond current output, a new supply is being designed for speed and scalability.
Approximately 35 km north of Warmbad, Arcadia Minerals’ Swanson project is situated in an underexplored LCT pegmatite corridor.
Systematic sampling has yielded more than 200 ppm Ta₂O₅ across multiple zones—a promising threshold globally—and the development concept is modular, featuring low upfront capital expenditure, staged processing, and a fast path to first concentrate with room to scale.
A formal resource is pending, but feasibility work is underway with a view to supplying high-tech and defence supply chains that prize provenance.
Meanwhile, a large historic inventory in the south is working through financing and infrastructure hurdles.
Near the Orange River, Tantalite Valley spans Farm Umeis and Kinderzitt and contains more than 622,000 tonnes of tantalite-lithium mineralised ore, with approximately 135 tonnes of Ta₂O₅ (historical figures).
The project has stalled due to infrastructure issues, notably a US$3–5 million water pipeline, and due to ownership clarity following the collapse of a 2022 sale; a US$11.9 million arbitration award from May 2025 remains to be recovered.
A Namibian investor consortium has indicated more than €9 million to revive operations, subject to closing and control. If funding and water are available, TVM could re-emerge as a sizable supplier.
History also offers a ready-made restart candidate with known scale and plant history.
About 10 km south of Uis, Three Aloes is a classic rare-metal pegmatite long known to collectors for nigerite and to miners for tantalite. Operations were refurbished in the early 2000s by Albaca/CAMEC, with reported output of around 1.5 tonnes per month of tantalite concentrate at peak, and installed capacity targeting about 3 tonnes per month before activity became intermittent.
Historic resource tallies vary with cut-offs and boundaries, but commonly cited figures sit around 13.2 Mt at 0.026% Ta (≈260 ppm) for the deposit, or about 7.2 Mt at roughly 0.05% Ta₂O₅ when grouped with the wider Uis swarm—either way, meaningful scale with restart potential given price and plant upgrades.
To keep terms straight, here’s the simple ore-to-metal chain that underpins all of the above.
Tantalite is the ore sold as Ta₂O₅-graded concentrate; tantalum is the refined metal used in capacitors, alloys and implants.
The simplified chain is: tantalite ore → concentrate → Ta₂O₅ → tantalum metal.
Taken together, these threads suggest how Namibia could establish a durable position in a specialist market.
Currently, Andrada’s Uis is already producing saleable tantalum concentrate and shipping it under offtake, giving Namibia a live foothold in the market.
Looking ahead, Swanson offers a near-term modular route to new tonnes; Tantalite Valley could return with infrastructure and capital; and Three Aloes remains a restart candidate with historic scale.
With buyers demanding traceable, conflict-free tantalum and the USGS price guide averaging around US$170/kg Ta₂O₅ (2024), Namibia’s combination of rule of law, port logistics via Walvis Bay, and a project pipeline positions it to grow from a niche producer to a reliable supplier if execution stays on track.
