• Yttrobetafite-(Y) Mineral Data

    webmineral.com/data/Yttrobetafite-(Y).shtml Yttrobetafite-(Y) Comments: Fragment of the large grain of compact mustard-yellow yttrobetafite-(Y) from the type locality. Associated minerals are black biotite and redish-brown veinlets of gummite. Location: Alakurtti pegmatite, Northern Karelia, Murmanskaja Oblast', Northern Region, Russia.
  • Betafite - Wikipedia

    en.wikipedia.org/wiki/Yttrobetafite-(Y) Structure. The pyrochlore supergroup minerals conform to the general formula, A 2−m B 2 X 6−w Y 1−n, where the m, w, and n variables represent the parameters that indicate incomplete occupancy of the A, Y, and X sites (Atencio et al. 2010). They crystallize isometric system with a space group of Fd 3 m or its subgroups where Betafite has a hexoctahedral class (Hogarth 1977).
  • Yttrobetafite (of Hogarth 1977): Mineral information, data ...

    www.mindat.org/min-4368.html Yttrobetafite of Kalita (1959) and Liferovich & Mitchell (2005) are a Zero valent dominant member of Pyrochlore Group. Yttrobetafite-(Y) from the Moon (Meyer & Yang 1988) is oxycalciobetafite.
  • Yttrobetafite-(Y) Mineral Specimen For Sale

    www.dakotamatrix.com/products/6719/yttrobetafite-y Yttrobetafite-(Y) - Ugly creamy tan crusts. Identified by Dr. Igor Pekov. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Yttrobetafite-(Y) Mineral Specimen For Sale

    www.dakotamatrix.com/products/6091/yttrobetafite-y Yttrobetafite-(Y) - Yellowish crystal masses in a 5 x 5 mm area. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Yttrobetafite-(Y) (of Hogarth 1977): Mineral information ...

    www.mindat.org/min-6627.html Placeholder to allow searching for the -(Y) name variant. Christy, A.G. and Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup.
  • mp-5373: Y2Ti2O7 (cubic, Fd-3m, 227)

    materialsproject.org/materials/mvc-12973 Y2Ti2O7 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Y3+ is bonded to eight O2- atoms to form distorted YO8 hexagonal bipyramids that share edges with six equivalent YO8 hexagonal bipyramids and edges with six equivalent TiO6 octahedra. There are two shorter (2.21 Å) and six longer (2.50 Å) Y–O bond lengths.
  • Yttrobetafite-(Y) Image

    www.webmineral.com/specimens/picshow.php Fragment of the large grain of compact mustard-yellow yttrobetafite-(Y) from the type locality. Associated minerals are black biotite and redish-brown veinlets of gummite. Alakurtti pegmatite, Northern Karelia, Murmanskaja Oblast', Northern Region, Russia.
  • GROUP OF MINERALS - Amethyst Galleries

    www.galleries.com/minerals/oxides/rare_ear.htm The Rare Earth Oxides Group is sometimes referred to as just the Rare Earths or sometimes as REO. This group of minerals is purely an informal group as most official mineral groups are related first by structural similarities and secondly by chemistry.
  • Yttrobetafite-(Y) (Y U Ce)2(Ti Nb Ta) 2O6(OH)

    www.handbookofmineralogy.org/pdfs/yttrobetafite-(Y).pdf Mineral Group: Pyrochlore group, betafite subgroup; REA >20% (with Y >Ce); 2TiB ≥ (Nb +Ta)B. Occurrence: In replacement bodies in a quartz-plagioclase-microcline pegmatite (Alakurtti, Russia); in a fragment of granophyre from soil and breccia (Moon). Association: Yttropyrochlore-(Y), plumbian uranpyrochlore, garnet, fergusonite, columbite