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Gallium-70 can decay through both beta minus decay and electron capture. Gallium-67 is unique among the light isotopes in having only electron capture as a decay mode, as its decay energy is not sufficient to allow positron emission. [31] Gallium-67 and gallium-68 (half-life 67.7 min) are both used in nuclear medicine.
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
It is the world's main source of aluminium and gallium. Bauxite consists mostly of the aluminium minerals gibbsite ( Al(OH) 3 ), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite ( Fe 2 O 3 ), the aluminium clay mineral kaolinite ( Al 2 Si 2 O 5 (OH) 4 ) and small amounts of anatase ...
The deposit was discovered in 1879 by the Georgian poet Akaki Tsereteli [7] who explored the area in search of manganese and iron ores. After other explorations it was discovered that there are several layers of manganese oxide, peroxide and carbonate with thickness varying between 0.2 m (0.66 ft) and 16 m (52 ft).
Many of the entries in this list are considered Lagerstätten (sedimentary deposits that exhibits extraordinary fossils with exceptional preservation—sometimes including preserved soft tissues). Lagerstätten are indicated by a note ( [ Note 1 ] ) in the noteworthiness column.
Industry and mining map of Iran. Mining in Iran is still under development, yet the country is one of the most important mineral producers in the world, ranked among 15 major mineral-rich countries, [1] holding some 68 types of minerals, 37 billion tonnes of proven reserves and more than 57 billion tonnes of potential reserves worth $770 billion in 2014.
The shorter-lived gallium-68 (half-life 68 minutes) is a positron-emitting isotope generated in very small quantities from germanium-68 in gallium-68 generators or in much greater quantities by proton bombardment of 68 Zn in low-energy medical cyclotrons, [4] [5] for use in a small minority of diagnostic PET scans.
That total equals about 49g of silver per tonne of ore. The same tonne contains 480g of lead and 380g of zinc. The deposit has one billion tonnes of ore. The silver deposit is the world's second largest, according to the Tajik government. The world's most productive silver mine is Cannington in Australia. However, Soviet-era projections took ...