• strontium
  • In contrast, positive europium and strontium anomalies in silicate minerals of the host xenolith, as well as oxygen isotopic data which deviate from the mantle range, are consistent with a protolith consisting of recycled oceanic crust. (ipgp.fr)
  • The alkali metal lithium, the alkaline-earth metals calcium, strontium, and barium, and the rare-earth elements europium and ytterbium all form compounds of the type Li(NH3)4 and Ca(NH3)6 that are best viewed as expanded metals, in which the metal atoms are spatially separated by the diluent (i.e. dielectric ammonia). (docme.ru)
  • For example, Meenakshi Wadhwa (Field Museum, Chicago) showed that as the ratio of triply-charged europium to doubly-charged europium (Eu 3+ /Eu 2+ ) increases in a group of shergotties, the ratio of strontium-87 to strontium-86 ( 87 Sr/ 86 Sr) also increases, and neodynmium-143 to neodynmium-144 ( 143 Nd/ 144 Nd) decreases. (hawaii.edu)
  • mineral
  • Its reactivity with water is comparable to that of calcium, and the reaction is 2 Eu + 6 H2O → 2 Eu(OH)3 + 3 H2 Because of the high reactivity, samples of solid europium rarely have the shiny appearance of the fresh metal, even when coated with a protective layer of mineral oil. (wikipedia.org)
  • show
  • The REE patterns in Schinus lensticifolius show a negative-Ce anomaly and a prominent tetrad effect, characterized as W-type that are not present in rock and soil samples. (scielo.br)
  • form
  • The 17 rare earth metals, with exotic names like lanthanum and europium , form unusually strong lightweight materials and are used in a wide range of applications including high-tech and defence products, car engines and clean energy. (freethesaurus.com)
  • shows
  • This shows that both Ce3+ and Ce4+ are present and that the Ce4+ being compatible in zircon is causing the anomaly. (wikipedia.org)
  • The lattice constant shows a smooth variation with temperature, and no obvious anomaly is observed corresponding to the phase transition from phase II to phase III. (docme.ru)