samarskite sentence in Hindi
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- Samarskite occurs in rare earth bearing granite pegmatites with other rare minerals.
- Other minerals include samarskite and fergusonite.
- Samarskite was first described in 1847 for an occurrence in Miass, Ilmen Mountains, Southern Ural Mountains of Russia.
- Samarskite crystallizes in the orthorhombic-dipyramidal class as black to yellowish brown stubby prisms although it is typically found as anhedral masses.
- Samarium was discovered in 1879 by the French chemist Paul �mile Lecoq de Boisbaudran and named after the mineral samarskite from which it was isolated.
- Boisbaudran named his element " samaria " after the mineral samarskite, which in turn honored Vasili Samarsky-Bykhovets ( 1803 1870 ).
- The samaria earth was further separated by Lecoq de Boisbaudran in 1886 and a similar result was obtained by Jean Charles Galissard de Marignac by direct isolation from samarskite.
- Well-known minerals containing yttrium include gadolinite, xenotime, samarskite, euxenite, fergusonite, yttrotantalite, yttrotungstite, yttrofluorite ( a variety of fluorite ), thalenite, yttrialite.
- These were gadolinium ( found in gadolinite, named after the Finnish chemist Johan Gadolin ) and samarium ( the mineral samarskite was named after a Russian mining engineer, Vasili Samarsky-Bykhovets ).
- Samarium occurs with concentration up to 2.8 % in several minerals including cerite, gadolinite, samarskite, monazite and bastn�site, the last two being the most common commercial sources of the element.
- 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 ).
- 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 ).
- 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.
- 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.
- 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.
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