Gadolinium prospectivity
across Australia, the USA & worldwide.
Carbonatite, alkaline and ion-adsorption gadolinium, ranked and explained — across the United States and Australia.
Run gadolinium on your ground →Where you can run gadolinium.
A certified national model in the countries ticked below — and anywhere else in the world through our global model.
Outside the certified countries, a run returns the prospectivity map, the geology behind it and a per-cell confidence read — how the global model works →
What the model reads for gadolinium.
Every gadolinium target is scored against the full national evidence stack — mapped geology and rock age, gravity and magnetics, radiometrics, terrain, satellite radar and alteration — the way a geologist reads a map sheet, with a pathfinder-geochemistry signature tuned to this system.
Pathfinder geochemistry the model weighs
Lead signal: The incompatible-element suite — zirconium, niobium and thorium. These are the elements this national model actually reads to rank gadolinium ground.
What is gadolinium?
Gadolinium is a middle rare-earth element with two properties few others share: the strongest paramagnetism of any stable element — the basis of MRI contrast agents — and the highest thermal-neutron capture cross-section of any natural element, which makes it invaluable in nuclear engineering. It occurs dispersed through the same mineral hosts as its neighbours — monazite, bastnäsite, xenotime, apatite — in carbonatites, alkaline igneous complexes and, in deeply weathered terrain, ion-adsorption clays. MineDSS models gadolinium through those systems, reading their combined geological, radiometric and geochemical footprint.
The deposit model
As a middle rare earth, gadolinium straddles the light-rare-earth budget of carbonatites and the heavy-rare-earth budget of peralkaline and ion-adsorption systems, so all three families matter. Carbonatites crystallise gadolinium-bearing bastnäsite, monazite and apatite; peralkaline granites and syenites fix it in xenotime, fergusonite and eudialyte alongside zirconium, niobium and thorium; and prolonged subtropical weathering of enriched granites releases it onto kaolinite clays as easily leachable ions, with the middle and heavy rare earths preferentially retained. All three systems share the incompatible-element halo and — for the igneous hosts — thorium-bearing radiometric and ring-like magnetic signatures that MineDSS reads across national survey data.
Why it matters
Gadolinium is on national critical-minerals lists for reasons that have little to do with volume: gadolinium-based contrast agents underpin tens of millions of MRI scans a year, gadolinium's neutron-capture capability serves reactor control and shielding, and gadolinium additions raise the performance of magnets, optical materials and solid-state devices. Supply is concentrated and separation capacity limited, so well-characterised new sources of middle-rare-earth ground carry weight for medical and nuclear supply chains alike.
Where it's used
The best-known use is medical: chelated gadolinium is the contrast agent behind a large share of MRI imaging. In nuclear engineering it serves as a burnable poison and emergency shutdown absorber. Elsewhere it improves the high-temperature behaviour of alloys, enables green phosphors, magneto-optical films and solid-state refrigeration research through the magnetocaloric effect, and appears in speciality garnets used in microwave and laser optics.
How MineDSS reads it
The model's pathfinder suite traces the incompatible-element association gadolinium travels with: zirconium, niobium, thorium, uranium, hafnium, tantalum and beryllium. Thorium and uranium give the enriched igneous hosts a strong radiometric expression; zirconium and niobium mark the evolved melts; and the whole suite survives weathering into the clay profile that hosts ion-adsorption enrichment. Read against mapped carbonatitic, alkaline and deeply weathered geology plus magnetics and terrain, it separates genuine rare-earth systems from barren alkaline rocks.
Gadolinium prospectivity — common questions
Which gadolinium deposit types does MineDSS model?
Three related families: carbonatite intrusions, whose bastnäsite-monazite-apatite assemblages carry gadolinium in the light-rare-earth budget; peralkaline granite and syenite systems, which fix it in xenotime, fergusonite and eudialyte; and ion-adsorption clays, the deeply weathered expression of enriched granites where the middle and heavy rare earths are held as leachable ions on kaolinite. All three share the incompatible-element and radiometric footprint the model is built to read.
How is the model validated, and where is gadolinium available?
Every MineDSS model is tested the hard way before it is served: we hide known deposits, rebuild the model without them, then test whether it still finds them, with test ground kept spatially separated so the model cannot memorise nearby points. A model that does not pass our release gates is not offered — for any mineral, in any country. Coverage today for gadolinium spans the United States and Australia. Skill is model-level, never a specific site's measured accuracy, and never a discovery or JORC / NI 43-101 resource claim.
Which pathfinder elements does MineDSS use for gadolinium?
The co-located incompatible-element family: zirconium, niobium, thorium, uranium, hafnium, tantalum and beryllium, with zirconium, niobium and thorium in the lead. These elements concentrate in the same enriched melts and weathered profiles as the middle rare earths, and thorium-uranium give the systems their radiometric signature. The suite is interpreted qualitatively alongside geology, geophysics and terrain evidence.
Does a high MineDSS score mean a deposit or a resource estimate?
No. A high score means ground is geologically similar to known carbonatite, alkaline and ion-adsorption rare-earth systems and merits closer exploration attention. It is not a discovery, not a JORC or NI 43-101 resource or reserve estimate, and not drilling or investment advice. MineDSS ranks prospectivity to help prioritise where to look; confirming whether gadolinium is present, and in what grade and quantity, still requires field programmes, drilling and independent assessment by qualified professionals.
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