• Britholite-(Y) Mineral Data

    webmineral.com/data/Britholite-(Y).shtml Britholite-(Y) Comments: Brown cm-size britholite-(Y) grains with typical prismatic 'apatite' outline in quartz matrix with black magnetite.Tengerite-(Y) forms the white encrustation in upper right part of the photo. Location: West Keivy Block, Western Keivy Massif, Kola peninsula, Murmanskaja Oblast', Northern Region, Russia.Scale: Picture Size 3.5x3.5 cm.
  • Britholite-(Y): Mineral information, data and localities.

    www.mindat.org/min-776.html Britholite-(Y) Noe D C, Hughes J M, Mariano A N, Drexler J W, Kato A (1993) The crystal structure of monoclinic britholite-(Ce) and britholite-(Y) Zeitschrift fur Kristallographie 206 233-246: 1993: Suishoyama, Japan: 0: 293: 0011045: Britholite-(Y)
  • Britholite-(Y) - mindat.org

    www.mindat.org/gm/776 Britholite-(Y) brown glassy grains in quartz matrix with minor black Magnetite. This britholite is Y-dominant, but REE spectrum displased to the left side with the maximum on Ce. So the main alteration product of this Britholite-(Y) is Bastnasite-(Ce) - its yellow masses are well visible at right part of specimen. Minute snow-white films of ...
  • Britholite-(Y): Mineral information, data and localities.

    zh.mindat.org/min-776.html First described as abukumalite by Hata (1938) from the Suishoyama pegmatite, Fukushima Prefecture, Japan.Later it was renamed as britholite-(Y) as part of the changes in nomenclature for rare-earth minerals (Levinson 1966).
  • Britholite-(Ce) Mineral Data

    webmineral.com/data/Britholite-(Ce).shtml Noe D C , Hughes J M , Mariano A N , Drexler J W , Kato A , Zeitschrift fur Kristallographie , 206 (1993) p.233-246, The crystal structure of monoclinic britholite-(Ce) and britholite-(Y), Note: unannealed sample, Locality: the Kipawa syenite gneiss complex
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  • Britholite, monazite, REE carbonates, and calcite ...

    www.sciencedirect.com/science/article/pii/S0024493715003254 Britholite-(Y) contains up to 5.2 wt.% ThO 2 (0.15 apfu Th); the highest Th content yet reported in naturally occurring Y-dominant britholites. Moreover, the alteration of (ferri)allanite-(Ce) resulted to complex pseudomorphs and overgrowths, including mainly REE carbonate phases: [synchysite- ...
  • Britholite (-Y) and its alteration: Reiarsdal, Vest-Agder ...

    foreninger.uio.no/ngf/ngt/pdfs/NGT_59_3_265-271.pdf Britholite (-Y) occurs as large crystals (5-20 cm) in a zoned granite pegmatite at Reiarsdal, Vest-Agder. Textures suggest that britholite and primary inclusions of a Mn-oxide phase reacted with fluids along fractures, to produce (l} fluorapatite"+ calcite + thalenite (s.l.) and (2) tombarthite. Microprobe analyses
  • On the symmetry and crystal chemistry of britholite: New ...

    rruff-2.geo.arizona.edu/uploads/AM86_1066.pdf known, britholite-(Ce) (formerly lessingite) and britholite-(Y) (formerly abukumalite). Britholite-(Ce) was first described by Winther (1901) as an orthorhombic mineral, pseudo-hexagonal by twinning on (110). Later X-ray work (Hägele and Machatschki 1939) on the same sample gave a hexagonal unit cell (a = 9.61, c = 7.02 Å) and
  • Minerals | Free Full-Text | Britholite Group Minerals from ...

    www.mdpi.com/2075-163X/9/12/732 The Keivy alkali granite-nepheline syenite complex, Kola Peninsula, NW Russia, contains numerous associated Zr-REE-Y-Nb occurrences and deposits, formed by a complex sequence of magmatic, late-magmatic, and post-magmatic (including pegmatitic, hydrothermal, and metasomatic) processes. The REE-rich lithologies have abundant (some of economic importance) and diverse britholite group minerals.