Platinum prospectivity
across the USA & Canada.
Reef-type and contact-type platinum-group mineralisation in layered intrusions, ranked and explained — validated across the USA and Canada.
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What the model reads for platinum.
Every platinum target is scored on the same seven lines of evidence — with a pathfinder-geochemistry signature tuned to this system.
Host rock
rock type and age
Gravity & magnetics
buried structures and intrusions
Radiometrics
potassium, thorium, uranium
Terrain shape
elevation, slope, aspect
Surface texture
radar (Sentinel-1)
Alteration
mineral signatures from satellite
Pathfinder chemistry
the elements that point to your commodity
Pathfinder geochemistry the model weighs
Lead signal: The magmatic suite — nickel, copper and chromium. These are the elements this national model actually reads to rank platinum ground.
What is platinum?
Platinum is a dense, chemically inert precious metal, the best known of the six platinum-group elements. In nature it occurs as native platinum and platinum-iron alloys, and in platinum-group minerals such as sperrylite, a platinum arsenide, and cooperite, a platinum sulphide. Economic concentrations form almost entirely by magmatic processes: platinum is scavenged from large volumes of cooling mafic magma into immiscible sulphide droplets and chromite, then concentrated within layered mafic–ultramafic intrusions. MineDSS models platinum through two seeded families in these intrusions — reef-type and contact-type systems. Each leaves a mappable footprint of layered mafic and ultramafic rocks, chromitite and sulphide horizons, characteristic gravity and magnetic responses, and a co-located multi-element geochemical signature, which is exactly the pattern a prospectivity model is built to read across large, partly covered terrains.
The deposit model
Both seeded systems are magmatic, governed by sulphur saturation and chromite crystallisation rather than hydrothermal fluids. Reef-type deposits are thin, laterally continuous stratiform horizons in which platinum-group elements concentrate at a specific level of the intrusion as settling sulphide droplets and chromite scavenge metals from a tall column of magma; the Merensky Reef, the UG2 chromitite and the Stillwater J-M Reef are the classic archetypes. Contact-type deposits are broader zones of disseminated copper–nickel–platinum-group sulphide near the base or margin of an intrusion, formed where ascending magma assimilated crustal sulphur and reached sulphide saturation. MineDSS reads these settings by combining mapped mafic–ultramafic geology and igneous layering, geophysics that resolves dense, magnetic intrusions and chromitite, satellite indications of weathered and altered ground, and the pathfinder geochemistry that trails magmatic sulphide and chromite. Together these evidence lines let the model rank ground by its resemblance to well-characterised reef and contact-type systems.
Why it matters
Platinum is a strategic precious metal and appears on the critical-minerals lists of the United States, the European Union, Canada and the United Kingdom. It underpins the autocatalysts that control vehicle emissions, and it is increasingly central to the hydrogen economy, where it catalyses both the electrolysers that produce green hydrogen and the fuel cells that convert it back to electricity. Primary supply is heavily concentrated — the great majority is mined from a handful of southern African and Russian operations — and the market has run in structural deficit. That combination of essential demand and concentrated supply makes transparent, defensible targeting of prospective ground in North America a matter of genuine strategic and commercial weight for explorers and the governments that permit them.
Where it's used
The largest single use of platinum is in autocatalysts, where it converts harmful exhaust gases into less harmful ones, with a broad range of industrial applications and jewellery its other principal markets. It is a workhorse industrial catalyst — in petroleum refining and in nitric acid and silicone production — and a key material in the hydrogen value chain, catalysing proton-exchange-membrane fuel cells and electrolysers. Platinum also serves electronics and hard-disk coatings, high-quality glass manufacture, thermocouples and laboratory ware, and it has important medical roles, from platinum-based chemotherapy drugs to durable implants. Its density and inertness also support its long-standing role as an investment metal held in bars and coins.
How MineDSS reads it
Platinum mineralisation is magmatic, so the diagnostic evidence traces the sulphide and chromite associations that carry platinum-group elements rather than a hydrothermal halo. MineDSS names a co-located pathfinder suite qualitatively, led by nickel, copper and chromium: nickel and copper mark the magmatic sulphide that scavenges platinum, while chromium tracks the chromitite layers with which reef mineralisation is intimately associated. The suite is completed by cobalt, which accompanies nickel-bearing sulphide, vanadium, which concentrates in the oxide layers of the same intrusions, and iridium, a companion platinum-group element. These geochemical signals are interpreted together with mapped mafic–ultramafic geology and layering, gravity and magnetic geophysics that resolve dense intrusions and chromitite, and satellite-mapped weathering. No single line is treated as decisive; the model weighs converging evidence for a fertile layered intrusion rather than any one element in isolation.
Platinum prospectivity — common questions
Which platinum deposit types does MineDSS model?
MineDSS models two seeded families within layered mafic–ultramafic intrusions: reef-type and contact-type platinum-group-element systems. Reef-type deposits are thin, laterally continuous stratiform horizons — the Merensky Reef, the UG2 chromitite and the Stillwater J-M Reef are the classic examples — where platinum concentrates as settling sulphide droplets and chromite scavenge metals from a large magma column. Contact-type deposits are broader zones of disseminated copper–nickel–platinum-group sulphide near the base or margin of an intrusion, formed where magma assimilated crustal sulphur. Both are magmatic in origin. The model does not attempt to represent placer platinum or unrelated deposit styles; it ranks ground by its resemblance to these well-characterised layered-intrusion settings.
How is the model's accuracy measured, and where is platinum available?
We validate every model the hard way — held-out spatial cross-validation. We hide known deposits, rebuild the model without them, then test whether it still finds them, with test blocks kept spatially separated so it cannot memorise nearby points. We are currently refreshing our published national skill figures so they reflect deployment-time performance, and will republish them per model. Coverage today spans the United States and Canada; the figures are model-level skill, 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 platinum?
The seeded pathfinder suite is nickel, copper, chromium, cobalt, vanadium and iridium, with nickel, copper and chromium carrying the lead signal. Nickel and copper mark the magmatic sulphide that scavenges platinum-group elements; chromium tracks the chromitite layers that host reef mineralisation; cobalt accompanies nickel-bearing sulphide; vanadium concentrates in the oxide layers of the same intrusions; and iridium is a companion platinum-group element. MineDSS interprets this geochemistry qualitatively and alongside other evidence — mapped mafic–ultramafic geology and layering, gravity and magnetic signatures of dense intrusions and chromitite, and satellite indications of weathered ground — rather than applying fixed numeric weights to any one element.
Does a high MineDSS score mean a deposit or a resource estimate?
No. A high score means ground is geologically similar to known platinum-mineralised systems and merits closer exploration attention. The model is trained to recognise anomalous platinum geochemistry — samples in roughly the top fifth of assayed values — not to certify a deposit. A high ranking 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 platinum is present, and in what quantity and grade, still requires field programmes, drilling and independent assessment by qualified professionals.
Other commodities we model
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