This dataset is a market activity dataset, where each market represents a consumption mix of products within a specific region, connecting suppliers with consumers of the same product within that region. The market covers producers and importers of the product within the same geographical area. In addition, the market also takes into account the transport, freight of the product to the consumer, and losses during transportation.

Vanadium-titanomagnetite ore is a composite symbiotic mineral mainly composed of iron, vanadium, titanium, and accompanied by various valuable elements (such as chromium, cobalt, nickel, copper, scandium, gallium, and platinum group elements, etc.), which have high contents of valuable elements and is an important industrial mineral raw material with extremely high development and comprehensive utilization value. In nature, vanadium-titanomagnetite ore mainly occurs in basic and ultra-basic rock bodies. The common valuable ore minerals found in the formed deposits are mainly titano-magnetite and ilmenite. In addition, there are small amounts of magnetite ore, Hematite ore, and sulfides, etc. Titanomagnetite is a type of magnetite containing solid solution separations of ilmenite, titaniferous hematite, magnesioferrite spinel, etc., which can crystallize into ilmenite and magnetite through regional metamorphism. Typically, vanadium-titanomagnetite ore contains 1% to 15% TiO2 and 0.1% to 2% V2O5. Ilmenite has a chemical composition of FeTiO3, with TiO2 content at 52%. 66%, Fe2+ can be completely substituted by Mg2+ and Mn2+, forming series of FeTiO3-MgTiO3 or FeTiO3-MnTiO3. When FeO predominates, it is called ilmenite; when MgO predominates, it is called magnesian ilmenite; and when MnO predominates, it is called manganese-titanate. Ilmenite has a Mohs hardness of 5 to 6, a specific gravity of 4.70 to 4.78, possesses weak magnetic properties, and has a magnetic susceptibility of 1173.33 to 224.56×10^-9 m^3/kg.