AMG Critical Materials to acquire Zinnwald Lithium, aims phased development of Erzgebirge deposit
AMG Critical Materials has agreed to buy the remaining shares of Zinnwald Lithium, promising phased development of the Erzgebirge lithium deposit and linking local mining to European refining.
AMG Critical Materials, the Amsterdam-listed specialist miner, announced an agreement to acquire the remaining shares of Zinnwald Lithium Plc, bringing the company’s control of the Zinnwald Lithium project in the Saxon Erzgebirge under a single owner. The deal, which values Zinnwald at roughly $75 million, positions AMG to accelerate technical studies and move toward a stepwise development of the deposit near Altenberg. Zinnwald Lithium has long been considered one of Europe’s most significant hard-rock lithium prospects, and AMG’s full takeover revives momentum for the project after a period of financing and permitting uncertainty.
Deal terms and ownership change
AMG currently owns about 29 percent of Zinnwald Lithium and will acquire the remaining roughly 71 percent for a consideration that includes AMG shares and cash. The company said the purchase includes a premium of more than 60 percent to Zinnwald’s closing price on the trading day before the announcement. AMG expects to complete the transaction in the third quarter of 2026, subject to customary closing conditions.
The move consolidates control of the asset held by Zinnwald’s subsidiary Lithium Zinnwald GmbH and simplifies decision-making on technical, regulatory and financing steps. AMG’s statement framed the acquisition as an opportunity to refocus the project on a smaller, sustainable footprint initially, with the intention of scaling operations if feasibility and market conditions support expansion.
Resource potential in the Erzgebirge
Exploration data and expert assessments indicate the Zinnwald area contains one of Europe’s larger lithium-bearing hard-rock deposits, with development scenarios estimating up to 1.6 million tonnes of raw ore annually at full build-out. Processed ore could yield as much as 18,000 tonnes of battery-grade lithium hydroxide per year under the project’s long-term plan, a quantity sufficient to supply cathode producers for batteries for roughly 500,000 electric vehicles annually.
Those output figures remain contingent on detailed metallurgical studies, mine design and economic modelling that AMG has pledged to prioritize. The project is still at an early stage, and the pace of development will depend on permitting, community engagement and the results of pilot processing tests that aim to confirm recoveries and reagent needs.
Planned phased development and Bitterfeld link
AMG has signalled it will pursue a phased approach, initially implementing a smaller-scale mine and infrastructure build while completing further technical studies over 18 to 24 months. Company leadership says the strategy is meant to establish a “sustainable and profitable” operating template before any larger ramp-up is considered.
The group already operates a lithium refinery in the Bitterfeld chemical park, commissioned in autumn 2024, with capacity plans of up to 20,000 tonnes of lithium hydroxide per year. AMG executives have indicated the Bitterfeld facility and a new processing technology developed by AMG Lithium could be integrated with Zinnwald’s ore-processing chain to improve overall project economics and increase European refining capacity for battery-grade products.
Financial and corporate context
AMG Critical Materials is listed in Amsterdam and carries a market presence of roughly €1.5 billion. AMG’s lithium division posted revenue of about €60 million in the first quarter of 2026, nearly double the prior-year period, and reported an operating contribution of roughly €15 million, reflecting improved lithium prices. The broader AMG group reported consolidated revenues of approximately €440 million.
Heinz Schimmelbusch, AMG’s chairman and chief executive, who has led the company for two decades, will steer the enlarged business through the acquisition period. Stefan Scherer, managing director of AMG Lithium, has been placed at the centre of plans to define the project scope and to introduce AMG’s process technology into the Zinnwald development pathway.
Regulatory, political and local steps
Zinnwald’s path to production has been shaped by lengthy ownership changes and regulatory hurdles. The licence history runs back to exploration applications made by Solarworld’s subsidiaries and later transfers through Bacanora and Erris Resources before the project became Zinnwald Lithium Plc. That complex lineage left the project listed on the London market rather than under a single domestic owner for many years.
In late April 2026 the Saxony mining authority, the Oberbergamt in Freiberg, granted approval for an exploration adit, a key early step enabling underground sampling and more detailed resource delineation. AMG will also face a pending decision from Brussels on whether Zinnwald qualifies as a strategic project under the European Union’s Critical Raw Materials Act; the project did not make the initial EU shortlist in an earlier round, though rival projects in the region have since gained traction and state support.
Strong community engagement and environmental assessment will be essential as AMG seeks to align local planning, water management and biodiversity safeguards with production plans. The company has signalled it will carry out further technical work over the coming 18 to 24 months to define a development route it calls both commercially viable and environmentally responsible.
AMG’s acquisition comes at a time of heightened European policy focus on securing battery supply chains and expanding continental refining capacity, and the company’s strategy reflects an effort to link domestic raw-material extraction with local processing. The consolidation of Zinnwald under AMG creates a clearer line of accountability for next steps in exploration, permitting and feasibility work that will determine whether the Erzgebirge deposit can transition from promising resource to operational mine.
