• Eudialyte group - Wikipedia

    en.wikipedia.org/wiki/Eudialyte_group Eudialyte group is a group of complex trigonal zircono- and, more rarely, titanosilicate minerals with general formula [N(1)N(2)N(3)N(4)N(5)] 3 [M(1a)M(1b)] 3 M(2) 3 M(4)Z 3 [Si 24 O 72]O' 4 X 2, where N(1) and N(2) and N(3) and N(5) = Na + and more rarely H 3 O + or H 2 O, N(4) = Na +, Sr 2+, Mn 2+ and more rarely H 3 O + or H 2 O or K + or Ca 2+ or REE 3+ (rare earth elements), M(1) and M(1b ...
  • Eudialyte Group: Mineral information, data and localities.

    www.mindat.org/min-11021.html Eudialyte-group minerals in rocks of Lovozero layered complex at Mt. Karnasurt and Mt. Kedykvyrpakhk. Geology of Ore Deposits, 57(7), 600-613. Karnasurt mine (Kedyk area) ⓘ Palitra pegmatite (Palette pegmatite) American Mineralogist: 90: 1467-1468. ⓘ Kitknyun Mountain
  • Eudialyte - Wikipedia

    en.wikipedia.org/wiki/Eudialyte Eudialyte, whose name derives from the Greek phrase Εὖ διάλυτος eu dialytos, meaning "well decomposable", is a somewhat rare, nine member ring cyclosilicate mineral, which forms in alkaline igneous rocks, such as nepheline syenites.Its name alludes to its ready solubility in acid. Eudialyte was first described in 1819 for an occurrence in nepheline syenite of the Ilimaussaq ...
  • Eudialyte: Mineral information, data and localities.

    www.mindat.org/min-1420.html Principal member of the Eudialyte Group. Note: most "eudialyte" photos on Mindat probably show unanalysed material and should be labeled "Eudialyte Group" since they might represent not eudialyte sensu stricto, but any of the various other members of the eudialyte group. Visit gemdat.org for gemological information about Eudialyte.
  • Crystal structure of ilyukhinite, a new mineral of the ...

    www.osti.gov/.../22645263-crystal-structure-ilyukhinite-new-mineral-eudialyte... The crystal structure of ilyukhinite, a new mineral of the eudialyte group, is studied by X-ray diffraction. The mineral found in pegmatite bodies of the Kukisvumchorr Mountain (Khibiny alkaline complex) is characterized by low sodium content, high degree of hydration, and predominance of manganese over iron.
  • (PDF) The nomenclature of eudialyte-group minerals

    www.researchgate.net/.../237841454_The_nomenclature_of_eudialyte-group_minerals This is the final report on the nomenclature of eudialyte-group minerals by the Eudialyte Nomenclature Subcommittee established by the Commission on New Minerals and Mineral Names of the ...
  • Eudialyte Mineral Data

    webmineral.com/data/Eudialyte.shtml Johnsen O , Grice J D , The Canadian Mineralogist , 37 (1999) p.865-891, The crystal chemistry of the eudialyte group, Locality: Illimaussaq complex, South Greenland, Sample: #15, Note: additional sites with low but unreported occupancies excluded, Note: y(M3a) adjusted to satisfy symmetry constraints
  • ONEILLITE: A NEW Ga-DEFICIENT AND FEE-RICH MEMBER OF THE ...

    rruff-2.geo.arizona.edu/uploads/CM37_1295.pdf cient, rare-earth-element-rich member of the eudialyte group. This sample, which is the holotype specimen of the new species described here, oneillite, was collected from the Poudrette Quarry,, Mont Saint-Hilaire, Quebec in 1994. The purpose of this paper is to describe this new member of the eudialyte group, its structure and occuffence.
  • Three Compositional Varieties of Rare-Earth Element Ore ...

    www.mdpi.com/2075-163X/3/1/94/pdf The eudialyte group presently counts 26 Na-zirconosilicate minerals [20] that incorporate variable amounts of Ca, Fe, Mn, REE, Sr, Nb, Ta, K, Y, Ti, W, and H [19]. See Table 2 for chemical formulae and site occupancies in Table 3 for relevant EGM. The IMA-accepted general formula for the eudialyte group [19,21] is:
  • Minerals | Free Full-Text | Three Compositional Varieties ...

    www.mdpi.com/2075-163X/3/1/94/htm Agpaitic nepheline syenites at the Norra Kärr Alkaline Complex, southern Sweden, are rich in zirconium and rare-earth elements (REE), which are mainly accommodated in eudialyte-group minerals (EGM). Norra Kärr hosts three compositionally distinct groups of EGM, which are complex zirconosilicates. Analyses of EGM by electron beam energy-dispersive (SEM-EDS) and wavelength-dispersive (WDS-EMP ...