The chemical element samarium was first isolated from a specimen of samarskite in 1879 . Samarium was named after samarskite which was named for the Russian mine official, Colonel Vasili Samarsky-Bykhovets ( 1803 1870 ).
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The chemical element samarium was first isolated from a specimen of samarskite in 1879 . Samarium was named after samarskite which was named for the Russian mine official, Colonel Vasili Samarsky-Bykhovets ( 1803 1870 ).
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Further spectroscopic analysis between 1886 and 1901 of samaria, yttria, and samarskite by William Crookes, Lecoq de Boisbaudran and Eug�ne-Anatole Demar�ay yielded several new spectroscopic lines that indicated the existence of an unknown element.
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Throughout his life he paid great attention to the rare earths and the problem of separating and distinguishing them; in 1878 he extracted ytterbium from what was supposed to be pure erbia, and two years later found gadolinium and samarium in the samarskite earths.
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Samarium is not found free in nature, but, like other rare earth elements, is contained in many minerals, including monazite, bastn�site, cerite, gadolinite and samarskite; monazite ( in which samarium occurs at concentrations of up to 2.8 % ) Samarium is usually sold as oxide, which at the price of about 30 USD / kg is one of the cheapest lanthanide oxides.
