 | | Journal (article/letter/editorial) | | during crystallization and alteration of fergusonite-(Y) from Zr-REE-Nb–rich late- to post-magmatic products...during crystallization and alteration of fergusonite-(Y) from Zr-REE-Nb–rich late- to post-magmatic products...during crystallization and alteration of fergusonite-(Y) from Zr-REE-Nb–rich late- to post-magmatic products...abundant fergusonite-(Y) mineralization. More than 90 EPMA analyses of fergusonite-(Y) from different occurrences...mineral. Variations in Y/HREE ratio during growth of fergusonite-(Y) in a pegmatite are explained by a change |  | | Journal (article/letter/editorial) | | identifisert som okanoganitt-(Y) (senere beskrevet som hundholmenitt-(Y)). I 1991 ble veien som forbinder...mindre mengder britholitt(Y)/fluorbritholitt-(Y) og thalénitt-(Y)/ fluorthalénitt-(Y). Som masser eller mer...mengder bastnäsitt-(Ce) og hundholmenitt-(Y), mindre vanlig thalénitt-(Y) og törnebohmitt(Ce). Konsentrasjonen...vil man aller først legge merke til vyuntspakhkitt-(Y): gjennomsiktige, plateformede krystaller varierende...verdensbasis svært sjeldne yttriumsilikatet. Keiviitt-(Y) og keiviitt-(Yb) finnes i det samme materialet (fig |  | | Book (edition) | | reserved. No part of this work may be reproduced by a~y mecl~~nical, photographi~, or electronic ~rocess_...77, 5.83, a,p,y = 89°06', 89°54', 91°30'; pseudohexagonal a,b,c = 23.6, 3.6, 6.2, a,p,y= 91°, 92°, 90°...24. Np,g = 1.597, 1.659, pleochroic: colorless to y~Uow.Green fluorescence under LW UV light. Found with...group). Triclinic, PT, a,b,c = 7.39, 7.72, ll.34,a,p,y=99°46',91°08', 115°35',Z=l.d: 11.1(10) - 5.5(8) -...late-stage hydrothermal mineral in a syenite pegmatite at Tvedalen, Langesundsfjord, Vestfold, Norway |  | | Journal (volume) | | controversies 9 Henrik Friis Hva er tombarthitt-(Y) 13 Gunnar Raade & Uwe Kolitsch Crystal chemistry...Åsheim Yttrian epidote and allanite-(Y) from a granite pegmatite in Bamble, Telemark, Norway 33 Tomas...size, the mineralogical and chemical zoning of pegmatite bodies, the occurrence of massive, monophase quartz...rocks. In the following three aspects regarding pegmatite classification and genesis are taken up to illustrate...pegmatites – is currently facing. Challenges of pegmatite classification The classification of rocks, which |  | | Book (volume) | | (4)Z3[Si24O72]O0 4–6X2 where N(1–5) ¼ Na, Н3О+, K, Sr, REE, Y, Ba, Mn, Ca; M(1) ¼ Ca, Mn, REE, Na, Sr, Fe; M(2)...generalized for the case D ¼ (Fe,Mg,Mn, Zn)xCayNaz□1-x-y-z as follows: ν[(Ti,Nb)–O] (cm1) ¼ 667 + 27.02x +...yegorovite Na4[Si2O4(OH)2]2·7H2O from the Palitra pegmatite, Lovozero massif, Kola peninsula hydrated proton)...following equations: y ¼ 0:0667Δν1 0:0138Δν2 þ 0:914: t ¼ 1:97 þ 1:16y 0:080Δν1 : z ¼ 1 y t: Violations...Locality: Ampanodiana North pegmatite, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa Commune |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Republic. Seppo Lahti: Geological Survey of Finland, Espoo, Finland. Joseph Lhoest: Liege, Belgium. John C...example, tritomite-(Ce) and tritomite-(Y) are end members [Ce+Y] in the tritomite series [AM 51:152(1966)]...nal order detectable by diffract at least a implies y generall here use fied exhibits external faces, but...where h, k and] are positive or negative, unequal y elesymmetr all by upon acted are faces al the general...spacing, and subscripted by the relative intensit y from 10 down to 1. The pattern is preceded by the |
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