WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
26.15 - Niobium, tantalum, vanadium or zirconium ores and concentrates. - Zirconium ores and concentrates 2615.90 - Other 2615.10 The principal zirconium ores generally classified in this heading are : (a) Baddeleyite, zirconium oxide. (b) Zircon and zircon sands, zirconium silicates. (When in the form of a precious stone, zircon falls in heading 71.03.) The rincipal tantalum and niobium (columbium) ores generally classified in this heading are tantafite and niobite (columbite) (i.e., tantalo-niobate of iron and manganese). The principal vanadium ores generally classified in this heading are : (a) Descloizite, basic vanadate of lead and zinc. (b) Patronite, vanadium sulphide. (c) Roscoelite (vanadium mica), complex vanado-silicate of aluminium and magnesium. (d) Vanadinite, vanadate and chloride of lead. Fused vanadium oxides obtained by treatments, other than calcinin or roastin ,which after the chemical composition or crystallographic structure of the basic ore are exclu ed (generafly Chapter 28). d: The heading also excludes zircon sand rnicronised for use as an opacifier in enamel manufacture (heading 25.30). -
1.- This Chapter does not cover : (a) Slag or similar industrial waste prepared as macadam (heading 25.17); (b) Natural magnesium carbonate (magnesite), whether or not calcined (heading 25.19); (c) Sludges from the storage tanks of petroleum oils, consisting mainly of such oils (heading 27.10); (d) Basic slag of Chapter 31; (e) Slag wool, rock wool or similar mineral wools (heading 68.06); (f) Waste or scrap of precious metal or of metal clad with precious metal; other waste or scrap containing precious metal or precious metal compounds, of a kind used principally for the recovery of precious metal (heading 71.12 or 85.49); or (g) Copper, nickel or cobalt mattes produced by any process of smelting (Section XV). 2.- For the purposes of headings 26.01 to 26.17, the term “ores” means minerals of mineralogical species actually used in the metallurgical industry for the extraction of mercury, of the metals of heading 28.44 or of the metals of Section XIV or XV, even if they are intended for non-metallurgical purposes. Headings 26.01 to 26.17 do not, however, include minerals which have been submitted to processes not normal to the metallurgical industry. 3.- Heading 26.20 applies only to : (a) Slag, ash and residues of a kind used in industry either for the extraction of metals or as a basis for the manufacture of chemical compounds of metals, excluding ash and residues from the incineration of municipal waste (heading 26.21); and (b) Slag, ash and residues containing arsenic, whether or not containing metals, of a kind used either for the extraction of arsenic or metals or for the manufacture of their chemical compounds. Subheading Notes. 1.- For the purposes of subheading 2620.21, “leaded gasoline sludges and leaded anti-knock compound sludges” mean sludges obtained from storage tanks of leaded gasoline and leaded anti-knock compounds (for example, tetraethyl lead), and consisting essentially of lead, lead compounds and iron oxide. 2.- Slag, ash and residues containing arsenic, mercury, thallium or their mixtures, of a kind used for the extraction of arsenic or those metals or for the manufacture of their chemical compounds, are to be classified in subheading 2620.60.