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In metallurgy, non-ferrous metals are metals or alloys that do not contain iron (allotropes of iron, ferrite, and so on) in appreciable amounts.. Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight (e.g. aluminium), higher conductivity (e.g. copper), [1] non-magnetic properties or resistance to corrosion (e.g. zinc). [2]
Classification of non-silicate minerals – List of IMA recognized minerals and groupings; Classification of silicate minerals – List of IMA recognized minerals and groupings; Classification of organic minerals – List of IMA recognized minerals and groupings; Industrial mineral – Geological materials mined for commercial value in industry
Use of old mineral names is also discontinued, for example when a name is no longer considered valid. Therefore, a list of recognised mineral species is never complete. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species.
Metal Largest producer Second largest producer Complete list Aluminium [6] China India List of countries by aluminium production: Bauxite [7] Australia Guinea List of countries by bauxite production
Examples include iron, nickel, lead and zinc. Copper is also considered a base metal because it oxidizes relatively easily, although it does not react with HCl. In mining and economics, the term base metals refers to industrial non-ferrous metals excluding precious metals. These include copper, lead, nickel and zinc. [3]
Non-ferrous extractive metallurgy is one of the two branches of extractive metallurgy which pertains to the processes of reducing valuable, non-iron metals from ores or raw material. [ 1 ] [ 2 ] [ 3 ] Metals like zinc , copper , lead , aluminium as well as rare and noble metals are of particular interest in this field, [ 1 ] while the more ...
Thus, for example, quartz and stishovite are two different minerals consisting of the same compound, silicon dioxide. ( Full article... Mineralogy is a subject of geology specializing in the scientific study of the chemistry , crystal structure , and physical (including optical ) properties of minerals and mineralized artifacts .
Most minerals with no iron content are diamagnetic. [1] Some such minerals may have a significant positive magnetic susceptibility, for example serpentine, [2] but this is because the minerals have inclusions containing strongly magnetic minerals such as magnetite. The susceptibility of such minerals is negative and small (Table 1).