• Allanite-(Y): Mineral information, data and localities.

    www.mindat.org/min-127.html The -(Y) suffix was later added by Levinson (1966) to designate the Y-dominant member of the allanite group. Allanite Subgroup of the Epidote Group . Black usually massive mineral.
  • Allanite-(Y) Mineral Data

    webmineral.com/data/Allanite-(Y).shtml PE Allanite-(Y) = 93.85 barns/electron U=PE Allanite-(Y) x r electron = 333.18 barns/cc. Radioactivity: GRapi = 14,180.81 (Gamma Ray American Petroleum Institute Units) Concentration of Allanite-(Y) per GRapi unit = 70.52 (PPM) Allanite-(Y) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram. ...
  • Allanite - Wikipedia

    en.wikipedia.org/wiki/Allanite Allanite (also called orthite) is a sorosilicate group of minerals within the broader epidote group that contain a significant amount of rare-earth elements.The mineral occurs mainly in metamorphosed clay-rich sediments and felsic igneous rocks. It has the general formula A 2 M 3 Si 3 O 12 [OH], where the A sites can contain large cations such as Ca 2+, Sr 2+, and rare-earth elements, and the ...
  • mindat.org - Allanite-(Y)

    www.mindat.org/a/best_allanitey Allanite-(Y) is a mineral of the allanite group of the epidote supergroup, together with 16 other approved minerals (July 2015). Allanite-(Y) is a rare mineral, listed from 22 localities in Mindat. The main reason for its rarity is that the allanite molecule favors the light rare earth elements, such as Ce, La and Nd .
  • Wisconsin Geological & Natural History Survey » Allanite

    wgnhs.wisc.edu/minerals/allanite Formula: (Ce,Ca,Ce,La,Nd,Y) 2 (Al,Fe) 3 (Si 2 O 7)(SiO 4)O(OH) Monoclinic Description: Allanite refers to a group of minerals found as an accessory in a number of different rocks such as syenite, granite and gneiss. It may also be a component of granite pegmatite. It is often associated with epidote, biotite, zircon, monazite and a number of rare earth, uranium or thorium-bearing minerals.
  • ALEX STREKEISEN-Allanite-

    www.alexstrekeisen.it/english/meta/allanite.php Allanite in the strictest sense is broken into three officially recognized minerals: Allanite-(Ce) the cerium rich allanite, also the most common and in general the one most often referred to as just allanite or orthite. Allanite-(La) the lanthanum rich allanite. Allanite-(Y) the yttrium rich allanite.
  • ALLANITE (Calcium Rare Earth Aluminum Iron Silicate Hydroxide)

    www.galleries.com/Allanite Allanite in the strictest sense is broken into three officially recognized minerals: Allanite-(Ce) the cerium rich allanite, also the most common and in general the one most often referred to as just allanite or orthite. Allanite-(La) the lanthanum rich allanite. Allanite-(Y) the yttrium rich allanite.
  • allanite-Y – mineralcollectionblog

    mineralcollectionblog.wordpress.com/tag/allanite-y In addition, the Y-rich minerals muromontite (5.52 % BeO) and bodenite were considered varieties of “allanite” (Dana, 1896). The latter two names are nowadays no longer listed among minerals and their relation to “allanite” is also under question.
  • Allanite-(Ce) Mineral Data

    webmineral.com/data/Allanite-(Ce).shtml Allanite-(Ce) Classification: Dana Class: 58.02.01c.01 Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups : with cations in [6] and higher coordination; single and double groups (n=1,2) Epidote group (Allanite subgroup) 58.02.01c.01 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 2 1 /m 2/m
  • Allanite-(Ce) (Ca Ce) (Al Fe2+ Fe3+ (SiO )(Si O )O(OH) 2 3 ...

    handbookofmineralogy.org/pdfs/allanite-(Ce).pdf Y 2O 3 0.04 La 2O 3 7.2 (1) Ce 2O 3 12.8 RE 2O 3 4.78 Fe 2O 3 10.64 FeO 9.02 MnO 0.85 (1) MgO 0.64 CaO 10.10 H 2O + 1.64 H 2O ¡ 0.10 Total 100.37 (1) Luangwe Bridge area, Zambia; wet chemical and spectrographic analysis; RE 2O 3 = Pr 2O 3 1.0%, Nd 2O 3 3.10%, Sm 2O 3 0.60%, Gd 2O 3 0.06%, Er 2O 3 0.02%. Analyses have been made of materials ...