Indium prospectivityacross Australia, the USA & worldwide.

MineDSS models indium through two host families: zinc-sulphide systems and tin-polymetallic systems. Zinc-sulphide systems (volcanogenic massive sulphide, sediment-hosted zinc-lead, skarn and polymetallic epithermal deposits) carry indium inside sphalerite, its principal host mineral. Tin-polymetallic systems, the sulphide-rich veins, breccias and replacement zones associated with granitic intrusions, host the richest indium of all, alongside cassiterite and chalcopyrite. Indium is not mined in its own right; it is recovered as a by-product, and its best-known discrete mineral, roquesite, is never economic alone, so the model ranks ground by how closely its evidence matches ground where samples assay anomalously high for the target mineral.

Every MineDSS model is tested before it is served: we withhold whole blocks of ground, rebuild the model without them, and check that it still ranks the anomalous samples there above background, with test ground kept spatially separate. A model that does not pass our release gates is not used, for any mineral, in any country. National models for indium run in Australia and the United States, with ranked targets. Anywhere else in the world, the global model returns the prospectivity map, the geology behind it and a confidence read. Skill is model-level, never a specific site's measured accuracy, and never a discovery or JORC / NI 43-101 resource claim.

The classic pathfinders are led by zinc, tin and copper and completed by lead, silver, cadmium and tungsten. Because indium hides in sphalerite and in the sulphides of tin-polymetallic systems rather than forming its own anomaly, these elements are essential: they trace the zinc-sulphide host, the granite-related tin association and the base-metal sulphide chemistry into which indium partitions. These elements are part of the geochemical record our models learn from. In a run on any piece of ground, the map itself is read from geology and rock age, gravity and magnetics, radiometrics, terrain, satellite radar and spectral alteration, so it covers ground that has never been sampled.

No. A high score means its evidence closely matches ground where samples assay anomalously high for indium, and it is flagged for closer exploration; the model is trained to recognise the most anomalous indium enrichment (samples assaying at or above 0.1 ppm indium). It is not a discovery, not a JORC or NI 43-101 resource estimate, and not drilling or investment advice. Because indium is recovered as a by-product of zinc and tin sulphide ores, confirming whether it is present in recoverable quantity and grade still requires field programmes, drilling and independent assessment by qualified professionals.