 | | Journal (article/letter/editorial) | | minerals) represent the most common Nb-Ta host in topaz-albite granites and related rocks from the Krásno-Horní...(Vysoký Kámen stock). Wodginite was found only in the topaz-albite microgranite of gneissic breccia matrix that...that occurs in the upper most part of the Hub topaz-albite granite stock. In wodginite, the Mn/(Mn+Fe)...and tantalum-bearing oxide minerals are common in topaz granites and related rocks (pegmatites, alkali-feldspar...this study are part of the mineral assemblage in topaz-bearing granites from the Krásno-Horní Slavkov ore |  | | Journal (article/letter/editorial) | | of tetrahedra to it. xENotimE-(y), xENotimE-(yb), aNd dySpRoSiaN xENotimE-(y) FRom pEGmatitES iN tHE...of specific HREE relative to Y is rare, but recent analyses of xenotime-(Y) intergrown with monazite(Ce)...moderate enrichment in Yb. Yb-dominant xenotime and dysprosian xenotime-(Y) also occur in the Nine Mile Pluton...in xenotime(Y) from border phases of the Dehnel ravine pegmatite, Stettin Pluton, in xenotime-(Y) from...cassiterite, ferberite/hübnerite, and topaz in the Nine Mile pluton, in xenotime-(Y) from a pegmatite exposed in |  | | Journal (article/letter/editorial) | | scientists from Australia, Brazil, Canada, Colombia, Finland, and the United States of America. Two field trips...project is planned for August 14 to 20, 2010 in Finland with (1) a field trip to the Wiborg rapakivi batholith...focuses on tin and the associated cryolite, Nb, Ta (Y, REE, Li, Zr, U, and Th) mineralization, and the conditions...et al. deals with the late-stage F-enriched Kymi topaz granite stock, the exposed part of which represents...Ga Wiborg rapakivi batholith, in southeastern Finland. The crystallization of the stock is investigated |  | Gioncada, Anna, Orlandi, Paolo, Vezzoli, Luigina, Omarini, Ricardo H., Mazzuoli, Roberto, Lopez-Azarevich, Vanina, Sureda, Ricardo, Azarevich, Miguel, Acocella, Valerio, Ruch, Joel (2014) Topaz magmatic crystallization in rhyolites of the Central Andes (Chivinar volcanic complex, NW Argentina): Constraints from texture, mineralogy and rock chemistry. Lithos, 184. 62-73 doi:10.1016/j.lithos.2013.10.023 | Journal (article/letter/editorial) | | journal homepage: www.elsevier.com/locate/lithos Topaz magmatic crystallization in rhyolites of the Central...2013 Available online 30 October 2013 Keywords: Topaz-bearing rhyolite Fluorine Magmatic volatiles Miarolitic...Miarolitic texture Central Andes a b s t r a c t Topaz-bearing rhyolite lavas were erupted as domes and...Chivinar volcano, in Central Andes. These are the only topaz rhyolite lavas recognized in Central Andes. Textural...geochemical data on the Chivinar rhyolites suggest that topaz crystallized from strongly residual, fluorine-rich |  | | Journal (article/letter/editorial) | | can be found in museums and old collections. The quarry lies on residential property and is closed to collecting...monazite-(Ce) crystals. The surfaces of samarskite-group A quarry for fill on the south face of Mauldin Mountain...britholite-(Y), xenotime-(Y), and fluorite, as well as possible synchysite-(Y) [or possibly kamphaugite-(Y)] from...Mircea (2010) reported topaz, columbite-(Fe), monazite-(Ce), and calcite. Tanteuxenite-(Y) and grayite have...HREE-rich (particularly Yb) xenotime-(Y), fluorite, probable HREErich synchysite-(Y), probable synchysite-(Ce) |  | | Journal (article/letter/editorial) | | quartz–muscovite (+fluorite), and quartz–muscovite–topaz greisens from the Primorsky rapakivi granite complex...fergusonite(Y), polycrase(Y), and betafite. Allanite(Ce), bastn aesite(Ce), xenotime(Y), Y and Zrthorite...minerals, ilmenorutile, rutile, wolframite, polycrase(Y), monazite(Ce), fluocerite(Ce), bastnaesite(Ce)...assemblage is contained in the quartz– muscovite–topaz greisen as a result of an increase in Eh and decrease...(120–650), Li (8–130), Zr (120–490), Th (7–160), Y (16–100), Sn (2–20), Nb (13–35), and F (400–3000) |  | | Journal (article/letter/editorial) | | analyses. The studied Proterozoic (Wiborg batholith, Finland and Pará, Amazonas and Goiás states, Brazil) and...granite varieties is slightly enriched in Hf, Th, U, Y, and HREEs; whereas the zircon in highly fractionated... Th (up to 10 wt.% ThO2), U (up to 10 wt.% UO2), Y (up to 12 wt.% Y2O3), Sc (up to 3 wt.% Sc2O3), Nb...16–19 (equigranular granite) in the Kymi stock, Finland, and from 49–52 (biotite granite) to 18–36 (leucogranite)...abundant elements found in zircon, including U, Th, Y, some REE, Al, and Ca, are usually analyzed using |  | | Journal (article/letter/editorial) | | billion years-Mount Evans Batholith Figure 5. Topaz from Crystal Park, El Paso County. Crystal is 3...quartz (varieties colorless and smoky), schorl, topaz, zinnwuldite, and zircon (Pearl 1972; Eckel1997)...quartz crystals. Cross and Hillebrand reported topaz from this area in 1882, and Over ( I 929) told of...Modreski and Michalski (1996) report that fine topaz has been found just to the southeast of Crystal...relate a story told by George White of an 8.7-cm topaz crystal that was broken in half when the collector |  | | Journal (article/letter/editorial) | | Rare Earth Elements Deposits and Occurrences in Finland Thair Al-Ani 1, *, Ferenc Molnár 1 1 2 3 * ID...Geological Survey of Finland (GTK), Betonimiehenkuja 4, FI-02151 Espoo, Finland; ferenc.molnar@gtk.fi...fi Geological Survey of Finland (GTK), Lähteentie 2, FI-96101 Rovaniemi, Finland; panu.lintinen@gtk.fi...Geological Survey of Finland (GTK), Neulaniementie 5, FI-70211 Kuopio, Finland; seppo.leinonen@gtk.fi...important REE prospects and metallogeny of REE in Finland. There is a particularly good potential for future |  | | Journal (article/letter/editorial) | | in the leading role of the minerals W, Ta, Nb, Bi, Y, REE, and As. The uniformity of mineral species and...allanite are mentioned most frequently. Monazite, xenotime, magnetite, titanite, rutile, garnet, and cassiterite...cassiterite almost always occur, whereas fluorite, topaz, tourma line, and sulfides are noted sporadically...complexes; the accessory minerals become enriched in Y, REE, U, and Th (Radkevich, 1971; Bolotnikov et al...mineral species. Abundant accessory cassiterite, topaz, and tourmaline were pointed out in granites of |  | | Journal (article/letter/editorial) | | evolved, weakly peraluminous and variably altered topaz – albite – Li mica leucogranites of A-type affiliation...REE–Y–Th–U–Zr minerals, including arsenoflorencite-(Ce), chernovite-(Y), hydrated chernovite-(Y) – xenotime-(Y)...As-poor bastnäsite-(Ce), synchysite-(Ce), synchysite-(Y), fluocerite-(Ce), and columbite-(Fe). Electron-microprobe...chernovite-(Y) is the most REE-rich yet recorded, with up to 0.51 apfu REE substituting for Y. All REE arsenates...primary magmatic REE–Y–Th–U–Zr minerals. Keywords: arsenoflorencite-(Ce), chernovite-(Y), thorite, coffinite |  | | Journal (article/letter/editorial) | | igneous association. Zircon, monazite-(Ce), and xenotime-(Y) constitute important radioactive accessory minerals...> 80 – 90 %) of the bulk-rock budgets of the REE, Y, and Th. A significant percentage of U (40 – 50 %)...uncommon accessory phase is late-magmatic ytterbian xenotime-(Y) containing up to 11.2 wt% Yb2O3, in addition...incompatible lithophile elements such as F, Li, Ga, Rb, Y, Nb, Cs, REE, Th, and U, thus having much in common...monazite age, beryllium, tantalum, ytterbian xenotime-(Y), ongonite, post-collisional setting Introduction |  | | Journal (article/letter/editorial) | | 1007/s00710-013-0318-y ORIGINAL PAPER Composition of coexisting zircon and xenotime in rare-metal granites...Springer-Verlag Wien 2013 Abstract Zircon and xenotime, from two mineralogically and chemically contrasting...variability with respect to abundances of Zr, Hf, REE, Y, P, Th, Ca, Al, Fe and As. According to their geochemical...are characterized by a variety of complex zircon-xenotime textures. They are usually strong hydrated and...granites has lower P and higher Y (up to 0.15 apfu Y). The xenotime-type substitution is the most important |  | Xie, Lei, Wang, Rucheng, Chen, Jun, Zhu, Jinchu, Zhang, Wenlan, Lu, Jianjun, Zhang, Rongqing (2013) A tin-mineralized topaz rhyolite dike with coeval topaz granite enclaves at Qiguling in the Qitianling tin district, southern China. Lithos, 170. 252-268 doi:10.1016/j.lithos.2013.03.001 | Journal (article/letter/editorial) | | com/locate/lithos A tin-mineralized topaz rhyolite dike with coeval topaz granite enclaves at Qiguling in...online 14 March 2013 Keywords: Qiguling topaz rhyolite Dike Topaz granite enclaves Cassiterite Qitianling...Qitianling Southern China a b s t r a c t The Qiguling topaz rhyolite is present as a dike within the Qitianling...4.5 m wide and 500 m long, contains enclaves of topaz granite. These rhyolites contain up to 72 wt.% SiO2...phenocrysts in a groundmass containing abundant topaz. The rhyolites in the study area are also strongly |  | | Journal (article/letter/editorial) | | rare-element pegmatites of LCT class (¼ Li, erny, 1991) and rare metal granites (Pollard, 1989). Cs...systems, namely pegmatites, was recognized a long erny, 1991 and references therein). For example, it time...sys erny et al., 1985, 1986). However, under particular conditions the columbite tems (C erny, evolution...Comparing ‘‘whole rock’’ chemical composition and erny, 2006) with evolved total volume of pegmatites like...The earliest intrusions are comprised of albite-topaz-annite granites (0.1 wt.% F, 0.2 wt.% P2O5), followed |  | | Book (chapter) | | Robertson 35 (1954). Y-bastnaesite = bastnäsite-(Y), Pekov 36 (1998). yberisilite = hingganite-(Y), AM 71, 605...montmorillonite, CCM 30, 115 (1982). Y-Ca carbonate = kamphaugite-(Y), de Fourestier 383 (1999). yedlinite...ferrihydrite, László 140 (1995). yellow jagut = yellow topaz, Bukanov 81 (2006). yellow lead ore = wulfenite...= sylvanite, Dana 6th, 1131 (1892). yellow topaz = topaz or heated Fe3+-rich quartz, Bukanov 81, 132...132 (2007). yellow yttrotantalite = fergusonite-(Y), Egleston 125 (1892). Yenerit = boulangerite, AM 33 |  | | Journal (article/letter/editorial) | | in this study were obtained from the Hilbersdorf quarry by R.T. in 1957 and M.L. in 1961. Samples from...bazzite, euclase, monazite, phenakite, topaz, tourmaline, zircon, xenotime, molybdenite occur as small and relatively...aggregates contain many small crystals of monazite, xenotime, zircon, bastnäsite-(Ce) and fluocerite-(Ce)...miarolitic cavity in the granite from the Hilbersdorf quarry in the Königshain massif. The principal forms...The small grey crystals in fluorite are zircon, xenotime, bastnäsit-(Ce) and fluocerite-(Ce). c Channels |  | | Journal (article/letter/editorial) | | or along crystal rims. Monazite(Ce) is low in xenotime-(Y) component, but large amounts of La and Nd substitute...chevkinite-(Ce), fergusonite(Y), monazite-(Ce), polycrase-(Y), xenotime-(Y), and zircon. Allanite-(Ce)...cryptocrystalline silica and a mixture of Ti oxide. Fergusonite-(Y), collected from the Roe Spar pegmatite, occurs as...Monazite-(Ce) was found at Batchellerville and Overlook quarry in the southern Adirondacks and in some small pegmatite...Batchellerville contains up to 18.70 percent ThO2. Polycrase-(Y) was described from Day pegmatite, Saratoga County |  | | Journal (article/letter/editorial) | | Monazite–Cheralite–Huttonite Solid Solutions, Xenotime, and Uraninite in Geochemically Distinct Granites...Monazite–Cheralite–Huttonite Solid Solutions, Xenotime, and Uraninite in Geochemically Distinct Granites...monazite–cheralite–huttonite solid solutions (s.s.) and xenotime from the highly evolved, strongly peraluminous...dominance of middle rare earth elements (MREE) in xenotime becomes larger. Considering the overall compositional...declining from La to Gd; associated xenotime is Y-rich (>0.8 apfu Y) with a flat MREE–HREE (heavy rare |  | | Journal (article/letter/editorial) | | (REE)-bearing phosphate minerals [monazite-(Ce) and xenotime-(Y)]. Field relations suggest that this is a large-scale...associated with rare-element mineral species such as xenotime-(Y), monazite-(Ce), microlite supergroup species...5–4 mm in diameter), uraninite (0.1–0.5 mm), xenotime-(Y) (10–90 lm), monazite-(Ce) (up to 0.5 mm), Nb/Ta...pyrite. Xenotime-(Y) inclusions (90 lm) occur in garnet, tourmaline, and albite. The xenotime-(Y) commonly...Backscatter electron image of a sample from the Havey quarry, garnet (Grt), quartz (Qtz), muscovite (Ms), biotite |  | | Journal (article/letter/editorial) | | association with kyanite, quartz, muscovite, paragonite, topaz, rutile, magnetite and hematite formed during the...muscovite, Zrn = zircon, Mnz = monazite, Xtm = xenotime, Lzl = lazuilite. Geological setting The Ichetuyskoye...%) is a reflection of the presence of muscovite, topaz, wardite, and goyazite. Regarding their chondrite-normalised...33.30 75.60 Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Y 440.00 1600.00 80.00 7.50 27.00 n.d. n.d. n.d. 8...3b) and lazulite. Monazite-(Ce) together with xenotime-(Y) was also observed in grains of woodhouseite |  | | Journal (article/letter/editorial) | | One of the Discoverers of Chernovite. Chernovite(Y) and Other Arsenic Minerals in RareMetal Granites...July 20, 2012 Abstract—An assemblage of chernovite(Y), Asbearing thorite, rooseveltite, and Cu and Fe...minerals is described in this paper. Chernovite(Y) is a product of autometasomatic alteration of Li–F...greisenization. DOI: 10.1134/S1075701513070039 1 Chernovite(Y) Y[AsO4] was found in 1967 during a study of hydrothermally...the effect of Asbearing fluids. Chernovite and xenotime are isostructural and make up an almost continuous |  | | Journal (issue) | | superb examples o f elbaite, beryl, st microlite, topaz, zircon and other species are preserved in museums...stibiomicrolite, cassiterite, quartz gems (3), garnet, topaz, zircon, cookeite, samarskite. Group 2: Mines: Ingela...ferrotantalite ferrocolumbite, cassiterite, bismutite, topaz, quartz gems. Group 3: Mines: Piteia Nahia, Mirrucue...Ferrotantalite-ferrocolumbite, quartz, quartz gems, topaz, lithium minerals, bismutite, mica, monazite, cassiterite...samarskite, euxenite, beryl gems, black beryl, xenotime. Group 6: Mines: Leonora, Mueterere, Namacala |  | | Journal (article/letter/editorial) | | 337, 382 Actinolite, Bahia, Brazil, 36 Agardite-(Y), Bahia, Brazil, 38 Agate, 259-67 Aikinite, Colorado...Minas Gerais, Brazil, R. B. Cook, 40-42 Britholite-(Y), Michigan, 96 Brochantite, Utah, 245 Brooklyn mine...Colorado, 3 1 1 Chernovite-(Y), Bahia, Brazil, 38 Chips from the Quarry, 5-7, 83-84, 149-5 1, 213-15...Specimen Mineralogy Eskimoite, Colorado, 398 The Estes Quarry, Cumberland County, Maine: A New Pegmatite Locality...Fairfieldite, Maine, 412 Falster, A. U., The Estes Quarry, Cumberland County, Maine: A New Pegmatite Locality |  | | Journal (article/letter/editorial) | | Vermont, 235, 239, 262 Alexander, J. H., Pikes Peak Topaz, 320-23 Alexandrite, Urals, 197 Allanite, Vermont...Carlsen, K., Early Vermont Mining, 267-74 Carlton Quarry, Chester, Windsor County, Vermont, R. Clements...Clinojimthompsonite from the Type Locality: Carlton Quarry, Chester, Windsor County, Vermont, R. I. Gait,...Chesterite, Vermont, 235; 275-81 Chips from the Quarry, 5, 85, 148, 293, 374 Chromite, Vermont, 241 Chrysocolla... 141, 205, 284, 365, 428 Clements, R., Carlton Quarry, Chester, Windsor County, Vermont, 231-35; Vermont |
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