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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
Bauxite is the main source of the rare metal gallium. [17] During the processing of bauxite to alumina in the Bayer process, gallium accumulates in the sodium hydroxide liquor. From this it can be extracted by a variety of methods. The most recent is the use of ion-exchange resin. [18]
Gallium trichloride is a common starting reagent for the formation of organogallium compounds, such as in carbogallation reactions. [44] Gallium trichloride reacts with lithium cyclopentadienide in diethyl ether to form the trigonal planar gallium cyclopentadienyl complex GaCp 3. Gallium(I) forms complexes with arene ligands such as ...
Kittilä mine is the biggest gold mine in Europe. Finland has the largest concentration and producer of gold in the European Union. [1] [2] The European mining industry has a long tradition. Although the continent's mining earns for a small share of GDP, it provides a large and significant share of the world-wide production. [3]
The deposits form pockets, lenses, chains of pockets or lenses, and sometimes extended sheets. The bauxite sheets tend to slope, either gently or steeply; only on the Hungarian Massif do the sheets lie almost horizontally. The sheets that are currently being mined range in thickness from 1 m to 8 m.
Polymetallic ores or multimetal ores are complex ores containing a number of chemical elements, among which the most important are lead and zinc.In addition, polymetallic ores can contain copper, gold, silver, cadmium, sometimes bismuth, tin, indium and gallium. [1]
The geology of Europe is varied and complex, and gives rise to the wide variety of landscapes found across the continent, from the Scottish Highlands to the rolling plains of Hungary. Europe's most significant feature is the dichotomy between highland and mountainous Southern Europe and a vast, partially underwater, northern plain ranging from ...
This list of fossil sites is a worldwide list of localities known well for the presence of fossils.Some entries in this list are notable for a single, unique find, while others are notable for the large number of fossils found there.