Ionic’s 2027 IPO and Silicon Ridge rare earths: project economics for mine planners
Reviewed by Joe Ashwell
First reported on MINING.com
30 Second Briefing
Utah-based Ionic Mineral Technologies is preparing a 2027 IPO for its Silicon Ridge ion-adsorption clay rare earths project, having hired Citigroup and targeted offtake agreements and scale-up funding before listing. The fully permitted, shovel-ready project near Provo will leverage an existing processing facility and hosts rare earths plus gallium, germanium and tungsten in a clay system similar to those supplying roughly 35–40% of China’s rare earth output. An economic assessment is due in H1 2026, with the US planning a $12 billion critical minerals stockpile and a preferential trade bloc with the EU, Japan and Mexico.
Technical Brief
- Silicon Ridge mineralisation occurs in ion-adsorption clays, enabling leaching-style extraction rather than hard-rock comminution.
- Ionic reports the IAC system is analogous to Chinese clays supplying ~35–40% of China’s rare earth output.
- CEO Andre Zeitoun describes a “faster, cleaner” extraction route than conventional hard-rock rare earth mining.
- The deposit reportedly hosts up to 16 critical elements, including gallium, germanium and tungsten alongside rare earths.
- Ionic has already publicly labelled Silicon Ridge as one of North America’s most “significant” critical mineral finds.
- An existing processing facility in Provo is expected to be repurposed rather than greenfield-built, reducing construction scope.
- Citigroup has been mandated to structure and manage the listing process for the planned IPO.
Our Take
Citigroup’s role around Ionic Mineral Technologies comes against a backdrop of its repeated appearance in our recent metals coverage, including calls on record copper and precious metals prices, suggesting the bank is positioning itself as a key intermediary in US critical minerals and metals financing.
A Utah-based rare earths and critical minerals project like Silicon Ridge sits in a US jurisdiction that is already moving to build a strategic stockpile—our database tags this as a $12 billion ambition—which is likely to support offtake negotiations and underpin a 2027 IPO narrative.
Hosting 16 different elements, including gallium, germanium and tungsten, puts Silicon Ridge into the multi-element critical minerals camp rather than a single-REE play, which typically improves optionality for offtake structures but complicates flow sheet design and permitting compared with more conventional rare earth deposits in our mining project coverage.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
Related Articles
Related Industries & Products
Mining
Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.
Construction
Quality control software for construction companies with material testing, batch tracking, and compliance management.
CMRR-io
Streamline coal mine roof stability assessments with our cloud-based CMRR software featuring automated calculations, multi-scenario analysis, and collaborative workflows.
HYDROGEO-io
Comprehensive hydrogeological testing platform for managing, analysing, and reporting on packer tests, lugeon values, and hydraulic conductivity assessments.
GEODB-io
Centralised geotechnical data management solution for storing, accessing, and analysing all your site investigation and material testing data.