Global Boron Compounds Market — South Africa by Application

ioneer is a single-asset, pre-revenue critical-minerals developer. Its value rests on Rhyolite Ridge in Nevada, which the company describes as the only known lithium-boron deposit in North America and one of only two globally. The project is fully permitted federally (BLM Record of Decision, October 2024) and backed by a closed but undrawn US$996 million U.S. Department of Energy loan. Its engineering is about 70% complete against a Class 2 capital estimate of US$1,683.2 million. The October 2025 economics show: - ~24,500 tpa lithium carbonate equivalent and ~135,500 tpa boric acid in years 1–25; - an unlevered NPV(8%) of US$2,237 million and an unlevered IRR of 18.0%; - all-in sustaining cost of US$4,628/t LCE net of boron credits, which the company places in the lowest global cost quartile. Boron's addition to the U.S. critical minerals list (November 2025) and a conditional U.S. Army lease for a boron-processing facility add a defence angle. The investment case now hinges on closing an equity partner, which would unlock the DOE loan and a final investment decision. --- ### Company's own description In its Transition Report on Form 20-F (TY2025), ioneer describes itself as the operator and 100% owner of Rhyolite Ridge. It characterises the project as the only known lithium-boron deposit in North America and one of only two such deposits worldwide. It expects the project to become a globally significant, long-life, cost-effective source of lithium and boron. The company emphasises three points: - The unusual mineralogy allows both elements to be extracted at low cost. - Commercial viability depends on having both lithium and boron revenue streams. - The operating cost structure is stable because of the scale and reliability of the boric acid credit. The H1 CY2026 directors' report states that the Group's principal activity continues to be developing Rhyolite Ridge. ### Business model and revenue model | Revenue-model element | Status (latest) | |---|---| | Product sales (commodity chemicals) | 100% of planned revenue; currently nil (no sales to date) | | Services / subscriptions / licensing | None. A potential licensing angle exists in leach/process know-how but none is disclosed | | Contracted vs. spot | Binding lithium offtakes cover ~15,000 tpa of LCE output on announced volumes (EcoPro 7; 000 tpa; Ford 7; 000 tpa; PPES 4; 000 tpa; Dragonfly 250 tpa). The company states ~9,500 tpa of lithium carbonate/hydroxide is uncommitted after the October 2025 uplift | | Reported revenue line | Interest revenue only: US$654k in H1 CY2026 and US$328k in TY2025 | ioneer plans a vertically integrated mine-to-chemical model: open-pit mining, on-site vat and heap leaching, and on-site processing into finished chemicals (lithium carbonate, battery-grade lithium hydroxide, and boric acid). This removes dependence on third-party converters, unlike most spodumene miners. On 2025 economics, the expected revenue mix is about 75% lithium and 25% boron (per the June 2025 partnering announcement as reported by Kalkine/Insider Monkey). The October 2025 study shows boric acid revenue of US$182.8M per year in years 1–25 at a US$1,296/t forward price from ioneer's internal market study. ### Value-chain position ioneer will sit across upstream mining and midstream chemical conversion. It will produce lithium chemicals sold to cathode/battery makers and OEMs (Ford, Toyota–Panasonic's PPES, EcoPro) and boric acid sold to glass, fibreglass, ceramics, agriculture and specialty chemical users. A prospective downstream step is now being studied: a Fluor-prepared pre-feasibility study (95% complete at July 2026) for defence-grade boron carbide, potentially sited at the U.S. Army's Tooele Army Depot (Utah). ### Customer types and end-markets | End-market | Product | Named counterparties | Notes | |---|---|---|---| | EV batteries / energy storage | Lithium carbonate, LiOH | Ford, PPES (Toyota–Panasonic JV), EcoPro Innovation, Dragonfly Energy | Binding offtakes signed 2021–2023 | | Glass, fibreglass, insulation, LCD/phone glass, ceramics, agriculture | Boric acid | Boron offtakes executed from 2019 (counterparty detail not re-verified in this research) | Ioneer cites ~5% annual boron demand growth (company commentary reported by Pahrump Valley Times) | | Defence & advanced materials | Boron carbide / boron nitride (prospective) | U.S. Army (land lease, conditional) | Armour, permanent magnets, semiconductors, nuclear applications | ### Independent characterisation Ioneer is best understood as a financing-constrained development option on U.S. domestic lithium and boron supply. Its technical and permitting de-risking is unusually advanced for a company of its size: - federal ROD issued and upheld at District Court; - state water and air permits held; - AACE Class 2 estimate and ~70% engineering complete; - debt financing closed (though undrawn). Corporate execution has repeatedly slipped. The Sibanye-Stillwater JV collapsed in February 2025. The replacement partnering process was launched in June 2025 with a "minimum four months" timetable, and has since been guided to H1 2026, then end of the June quarter, and then Q3 2026. As of the latest disclosure, FID timing is "to be determined" (June 2026 quarterly, as summarised by Quartr). The boron co-product differentiates the project versus pure-lithium peers. It cushions lithium price cycles and now gives a national-security narrative that sits well with current U.S. federal industrial policy.