• Rare Earth-Bearing Murataite Ceramics

    www.cambridge.org/core/services/aop-cambridge-core/content/.../S1946427400060590 murataite polytypes, P – perovskite-type phases, Z – zirconolite. to 10% of total bulk).In the Ce- and Zr-doped ceramics murataite was found to be major phase and perovskite and zirconolite respectively were minor phases. The ceramic with La is composed of several phases. Perovskite and murataite are dominate phases.
  • Murataite Mineral Data

    webmineral.com/data/Murataite.shtml PE Murataite = 85.12 barns/electron U=PE Murataite x r electron = 320.03 barns/cc. Radioactivity: GRapi = 8,626.11 (Gamma Ray American Petroleum Institute Units) Concentration of Murataite per GRapi unit = 115.93 (PPM) Murataite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
  • Murataite-(Y): Mineral information, data and localities.

    www.mindat.org/min-2811.html Polysomatic pyrochlore-murataite series with modular structure and four structural varieties of murataite (3C, 5C, 7C, and 8C) are described by Laverov et al. (2011). The structure is a derivative of that of fluorite. The synthetic 8C polytype is a candidate for long-term immobilization of high-level nuclear waste.
  • Murataite dictionary definition | murataite defined

    www.yourdictionary.com/murataite murataite definition: Noun 1. (mineralogy) An isometric-hextetrahedral black mineral containing calcium, fluorine, hydrogen, iron, la,ce,pr,nd,sm, manganese, niobium ...
  • Synthesis and characterization of a simpler Mn-free, Fe ...

    www.sciencedirect.com/science/article/pii/S0925838816340609 Murataite has long-term stability and low leachability for immobilization of actinide wastes compared to other solidification methods, e.g. borosilicate glass. Synthetic murataite is believed to contain five systematically independent cation sites instead of only four positions in natural murataite (space group believed to be: F-43 m) . Here we ...
  • (PDF) A modular model of the crystal structure of the ...

    www.researchgate.net/.../227180709_A_modular_model_of_the_crystal_structure_o... A modular model of the crystal structure of the pyrochlore-murataite polysomatic series Article (PDF Available) in Crystallography Reports 52(1):37-46 · February 2007 with 47 Reads
  • Murataite, a New Complex Oxide from El Paso County, Golorado'

    www.minsocam.org/ammin/AM59/AM59_172.pdf American Mineralogist, Volume 59, pages 172-176, 1974 Murataite, a New Complex Oxide from El Paso County, Golorado' JouN W. AoAms, TnsooonB BorrNrnv, W. N. SuRnn, ^lNo KsrrH RogrNsox
  • murataite - Wiktionary

    en.wiktionary.org/wiki/murataite murataite An isometric-hextetrahedral black mineral that is a basic oxide and fluoride of yttrium, sodium, zinc, iron, titanium and niobium; References “Murataite” in David Barthelmy, Webmineral Mineralogy Database, 1997–.
  • Characterization of modified murataite based ceramics as a ...

    www.sciencedirect.com/science/article/pii/S0022311519316137 As a result, murataite content in the actinide-bearing ceramics was increased to 75–90 vol% and it is the major host phase for uranium and REs while perovskite was nearly absent. Murataite-based ceramics were found to be highly corrosion resistant with respect to heated solutions. Preliminary leach tests show high resistance at 150 °C as well.
  • (PDF) Murataite: a matrix for immobilizing waste generated ...

    www.researchgate.net/.../328126726_Murataite_a_matrix_for_immobilizing_waste_... Murataite-8C, a prospective synthetic material for the long-term immobilization of high-level radioactive waste and a member of the pyrochlore-murataite polysomatic series, was investigated by ...