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Lutetium is a chemical element with symbol Lu and atomic number 71.
It is a silvery white metal, which resists corrosion in dry air, but not in moist air.
Lutetium usually occurs in association with the element yttrium and is sometimes used in metal alloys and as a catalyst in various chemical reactions.
When entering a chemical reaction, the atom loses its two outermost electrons and the single 5d-electron.
The terrigenous sediments range in maturity from arenites and wackes to argillaceous rocks; this is consistent with the reconstruction of the sedimentary protoliths of paragneisses, which are predominant in the metasedimentary rocks.
The petrogeochemical features of the calciphyres, their LREE enrichment relative to “pure” carbonate rocks, and a distinct Eu anomaly were inherited from the terrigenous component of calc-silicate sediments.
The latter one, lutetium-176, decays via beta decay with a half-life of 3.78×10 To date, 32 synthetic radioisotopes of the element have been characterized, ranging in mass from 149.973 (lutetium-150) to 183.961 (lutetium-184); the most stable such isotopes are lutetium-174 with a half-life of 3.31 years, and lutetium-173 with a half-life of 1.37 years.
Update Star has been tested to meet all of the technical requirements to be compatible with Windows 10, 8.1, Windows 8, Windows 7, Windows Vista, Windows Server 2003, 2008, and Windows XP, 32 bit and 64 bit editions.The Nd model age (2.4–2.7 Ga) of the calciphyres and the value T(DM-2st) = 2.5–3.0 Ga for zircon from these rocks indicate that carbonate accumulation was accompanied by the supply of terrigenous material, which formed during the erosion of Archean and Paleoproterozoic crust.Zircon from the calciphyres is similar to metamorphic zircon in REE patterns and Th/U ratios.It might have been of detrital origin and then recrystallized during high-temperature metamorphism. This is close to the previous age estimates for the terrigenous rocks metamorphism (1.85–1.86 Ga) and the age of baddeleyite from apocarbonate metasomatic rocks (1.86 Ga).Terrigenous-silicate rocks were metamorphosed at ca.