Fluorine prospectivity
across the USA & Canada.
Vein, carbonatite and granite-related fluorite (fluorspar), ranked and explained — validated across the USA and Canada.
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What the model reads for fluorine.
Every fluorine 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: Barium, strontium and thorium. These are the elements this national model actually reads to rank fluorine ground.
What is fluorine?
Fluorine is the lightest and most reactive of the halogens, and in nature it is won almost entirely from a single ore mineral: fluorite, or fluorspar, a calcium fluoride that is the primary industrial source of fluorine chemistry. Smaller amounts are carried in fluorapatite and topaz. MineDSS models fluorine through three seeded deposit systems: vein, carbonatite and granite-related fluorite. Each is the product of fluorine-rich hydrothermal or magmatic fluids that concentrate fluorite in fractures, alkaline intrusions or the roofs of evolved granites. These processes leave a mappable footprint — veined and altered host rocks, characteristic geophysical responses and a distinctive multi-element geochemical halo — which is exactly the pattern a prospectivity model is built to read across large, partly covered terrains.
The deposit model
Vein fluorite forms where fluorine-bearing hydrothermal fluids ascend fault and fracture networks and deposit fluorite, commonly with barite, calcite and base-metal sulphides; in carbonate host rocks these grade into Mississippi Valley-type systems, where fluorite fills pore space and replaces limestone alongside sphalerite and galena. Carbonatite-related fluorite forms because carbonatite and alkaline magmas are intrinsically fluorine-rich, so cooling melts and late hydrothermal fluids precipitate massive fluorite with rare-earth, barium and thorium enrichment. Granite-related systems concentrate fluorite in greisen, topaz granite and marginal veins around strongly fractionated felsic intrusions, intergrown with the tin-tungsten rare-metal suite. MineDSS reads these settings by combining mapped intrusive and structural geology, geophysical signatures of faults, plutons and alteration, satellite-derived indications of altered ground, and the pathfinder geochemistry that trails a fluorine-rich system, ranking ground by its resemblance to well-characterised vein, carbonatite and granite-related fluorite.
Why it matters
Fluorspar is the indispensable feedstock for the entire fluorine value chain, and it appears on the critical- or strategic-mineral lists of several major economies. There is no substitute at scale: almost all fluorine chemistry begins with fluorspar, from refrigerants and high-performance polymers to the aluminium and battery industries. Supply, however, is concentrated in a handful of producing countries, and several consuming nations, including the United States, rely almost entirely on imports. That combination of essential, irreplaceable demand and concentrated, import-dependent supply is why transparent, defensible targeting of prospective ground carries real strategic weight for explorers and for the governments that permit and depend on them.
Where it's used
Acid-grade fluorspar is converted to hydrofluoric acid, the master feedstock from which almost all fluorine-bearing chemicals are made: refrigerants, fluoropolymers such as PTFE, aluminium fluoride and synthetic cryolite for aluminium smelting, and the electrolyte salts and binders used in lithium-ion batteries. Fluorine chemistry also underpins a large share of modern pharmaceuticals and agrochemicals. Metallurgical-grade fluorspar serves as a flux in steelmaking, lowering slag viscosity and helping to strip impurities, while ceramic-grade material is used in glass, enamel and speciality ceramics. These applications span energy, transport, electronics, defence and healthcare, which is what makes secure, well-characterised supply a matter of both industrial and national interest.
How MineDSS reads it
MineDSS reads a fluorine-focused pathfinder suite qualitatively rather than through fixed weights. The seeded elements are barium, strontium, thorium, tin, tungsten, beryllium, lithium and molybdenum, with barium, strontium and thorium carrying the lead signal. Barium and strontium track the barite and celestine gangue of vein and Mississippi Valley-type fluorite, thorium follows the carbonatite and alkaline association, and tin, tungsten, beryllium, lithium and molybdenum trace the greisen rare-metal suite of granite-related systems. This geochemistry is interpreted alongside mapped intrusive and structural geology, geophysical expressions of concealed faults, plutons and alteration, and satellite indications of altered ground. No single line is treated as decisive; the model weighs converging evidence so that a coherent, mutually reinforcing pattern is ranked more highly than any isolated anomaly.
Fluorine prospectivity — common questions
Which fluorine deposit types does MineDSS model?
MineDSS models three seeded deposit systems: vein, carbonatite and granite-related fluorite (fluorspar). Vein systems host fluorite in fault- and fracture-controlled hydrothermal veins, grading in carbonate host rocks into Mississippi Valley-type deposits with barite, sphalerite and galena. Carbonatite-related systems precipitate fluorite from intrinsically fluorine-rich alkaline magmas and late fluids, alongside rare-earth, barium and thorium enrichment. Granite-related systems concentrate fluorite in greisen, topaz granite and marginal veins around strongly fractionated intrusions. The model does not attempt to represent unrelated deposit styles; it ranks ground by its resemblance to these well-characterised fluorite settings.
How is the model's accuracy measured, and where is it 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 fluorine?
The seeded pathfinder suite is barium, strontium, thorium, tin, tungsten, beryllium, lithium and molybdenum, with barium, strontium and thorium carrying the lead signal. Barium and strontium reflect the barite and celestine gangue of vein and Mississippi Valley-type fluorite, thorium tracks the carbonatite and alkaline association, and tin, tungsten, beryllium, lithium and molybdenum trace the greisen rare-metal suite of granite-related systems. MineDSS interprets this geochemistry qualitatively and alongside other evidence — mapped intrusive and structural geology, geophysical signatures of concealed faults and plutons, and satellite indications of altered 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 mineralised 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 from held-out spatial cross-validation to help prioritise where to look; confirming whether fluorite is present, and in what quantity and grade, still requires field programmes, drilling and independent assessment by qualified professionals.
Other commodities we model
Better fluorine targets. Evidence you can check.
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