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samarskite
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Samarskite — or properly samarskite (Y) is a radioactive mineral with the empirical formula::Y0.2REE0.3Fe3+0.3U0.2Nb0.8Ta0.2O4 [ [http://webmineral.com/data/Samarskite (Y).shtml Webmineral data] ] Other formulas show Ce (cerium) rather than the generic REE… … Wikipedia
Samarskite — Sa*mar skite, a. [After Samarski, a Russian.] (Min.) A rare mineral having a velvet black color and submetallic luster. It is a niobate of uranium, iron, and the yttrium and cerium metals. [1913 Webster] … The Collaborative International Dictionary of English
samarskite — [sə mär′skīt, sam′ər skīt΄] n. [Fr: so named (1847) after Col. Samarski, Russ mining official] a dark colored, hard, radioactive, mineral (Y,Ce,U,Ca,Fe,Pb,Th)(Nb,Ta,Ti,Sn) 2O6, that is an ore of uranium or niobium … English World dictionary
samarskite — samarskitas statusas T sritis chemija apibrėžtis Mineralas. formulė (Y,U,Ca)(Nb,Fe)₂(O,OH)₆ atitikmenys: angl. samarskite rus. самарскит … Chemijos terminų aiškinamasis žodynas
samarskite — noun Etymology: German Samarskit, from V. E. Samarskiĭ Bykhovets died 1870 Russian mining engineer Date: 1849 a black or brownish black orthorhombic mineral that is a complex oxide of rare earths, uranium, iron, lead, thorium, niobium, tantalum,… … New Collegiate Dictionary
samarskite — /seuh mahr skuyt/, n. a velvet black mineral, a complex columbate tantalate of uranium, cerium, etc., occurring in masses: a minor source of uranium, thorium, and rare earth oxides. [ < G Samarskit (1847), after Russian mining engineer V.E.… … Universalium
samarskite — samar·skite … English syllables
samarskite — sa•mar•skite [[t]səˈmɑr skaɪt[/t]] n. mir a velvet black mineral containing uranium, samarium, cerium, etc., occurring in masses: a minor source of uranium and rare earth oxides • Etymology: < G Samarskit (1847), after Russian mining engineer… … From formal English to slang
samarskite — /səˈmaskaɪt/ (say suh mahskuyt) noun a velvet black mineral, a complex of columbium and tantalum compounds with uranium, cerium, etc., occurring in masses; a minor source of uranium. {German Samarskit, named after Colonel von Samarski, 19th… …
samarskite — noun a complex black mineral occurring in pegmatites • Hypernyms: ↑mineral • Substance Holonyms: ↑pegmatite • Substance Meronyms: ↑gadolinium, ↑Gd, ↑atomic number 64 … Useful english dictionary
