 | | Journal (article/letter/editorial) | | For Geosciences, Telegrafenberg, 14473 Potsdam, Germany inclusion studies may assist in determining and...(90 μm) from Neudorf, Harz Mts. (Germany); Freiberg, Saxony (Germany); and Durham, North Pennine Orefield...Turkey; Chelopech, Bulgaria; Clausthal, Harz Mts., Germany). Both FTIR spectra of stibnite show slightly increasing...some metal oxides (e.g., hematite, Mn oxides, wolframite, or Nb-Ta oxides) are good semiconductors (Hunt...tetrahedrite sample from Clausthal (Harz Mts., Germany) with low As concentration shows very good IR transmittance |  | | Journal (article/letter/editorial) | | minerals Article Structural Variations across Wolframite Solid Solutions, (Fe,Mn)WO4 Darren A. Umbsaar...crystal structure of four samples from natural wolframite solid solutions, (Fe,Mn)WO4 , was obtained with...P2/c, and Z = 2. Wolframite solid solutions extend from ferberite (FeWO4 ) to hübnerite (MnWO4 ). The W...linearly with the unit-cell volume, V, across the wolframite series. The average distance increases...polyhedra across the series are discussed. Keywords: wolframite solid solutions; structure; chemistry; synchrotron |  | | Journal (article/letter/editorial) | | Manuscript The H/F ratio as an indicator of contrasted wolframite deposition mechanisms Julie Anne-Sophie Michaud... The H/F ratio as an indicator of contrasted wolframite deposition mechanisms, Ore Geology Reviews (2018)... The H/F ratio as an indicator of contrasted wolframite deposition mechanisms Julie, Anne-Sophie Michaud1*...michaud@univ-orleans.fr Abstract Understanding wolframite deposition mechanisms is a key to develop reliable...wolframites have a wide range of compositions, from hübnerite- (MnWO4) to ferberite-rich (FeWO4). Deposition |  | | Journal (article/letter/editorial) | | Journal Pre-proofs Wolframite solubility and precipitation in hydrothermal fluids: insight from thermodynamic...Please cite this article as: X. Liu, C. Xiao, Wolframite solubility and precipitation in hydrothermal...pertain. © 2019 Published by Elsevier B.V. Wolframite solubility and precipitation in hydrothermal...100081, China Abstract: Wolframite, a solid-solution series between hübnerite (MnWO4) and ferberite (FeWO4)...precipitating wolframite, but it remains poorly understood what are the mechanisms depositing wolframite effectively |  | | Journal (article/letter/editorial) | | com/locate/oregeorev Geochemistry of cassiterite and wolframite from tin and tungsten quartz veins in Portugal...online 4 October 2007 Abstract Cassiterite and wolframite compositions from Sn N W- and W N Sn-bearing...composition of magmatic hydrothermal fluids. Wolframite compositions from Sn N W- and W N Sn-bearing...magmatic hydrothermal fluids. In some deposits, most wolframite crystals are homogeneous, but others are heterogeneous...heterogeneous. Inner patches, rich in a hübnerite component, rarely occur in crystals from the Filharoso |  | Miyawaki, R., Yokoyama, K., Matsubara, S., Furuta, H., Gomi, A., Murakami, R. (2010) HUANZALAITE, MgWO4, A NEW MINERAL SPECIES FROM THE HUANZALA MINE, PERU. The Canadian Mineralogist, 48 (1) 105-112 doi:10.3749/canmin.48.1.105 | Journal (article/letter/editorial) | | MgWO4, A NEW MINERAL SPECIES FROM THE HUANZALA MINE, PERU Ritsuro MIYAWAKI§, Kazumi YOKOYAMA and Satoshi...occurs as inclusions in scheelite in the Huanzala mine, Peru. It forms orange to reddish brown aggregates...the wolframite group (class 4.DB of Strunz & Nickel), and is the Mg-dominant analogue of hübnerite, MnWO4...species, magnesium, tungstate, wolframite-group mineral, Huanzala mine, Peru. Sommaire La huanzalaïte...se présente en inclusions dans la scheelite de la mine Huanzala, au Pérou. Elle se présente en agrégats |  | | Journal (issue) | | Professional Awards 36 Mineral Of The Quarter: Wolframite DEPARTMENTS 35 In The Pipeline 10 RMAG March...coal mine in SW Wyoming. Facies of Tidal Origin, Eastern New York.’ Our trip leadThere a huge mine face...Box 221724, Denver CO 80222 | ron@bhigeo.com WOLFRAMITE The Mineral that Illuminated the World » CONTINUED... MINERAL OF THE QUARTER: WOLFRAMITE » CONTINUED FROM PAGE 36 Wolframite, iron-manganese tungstate...Ferberite (FeWO4) and Hübnerite (MnWO4). Pure Fe2+ and Mn2+ end members are scarce. Wolframite minerals are rare |  | | Journal (article/letter/editorial) | | include arsenopyrite, fluorapatite, fluorite, hübnerite, chalcopyrite, carpholite, cassiterite, quartz...ruling of February 11, 1961, with cassiterite, wolframite and chalcopyrite as ore minerals. The mining...15261527. In support of mining activities, the mine owner Jan Pluh of Rabtejn issued mining rules for...tin, especially in Germany, as testified that major tin traders from southern Germany used to pay supplies...and resulted in the decline of mines. To boost the mine production, Krásno and Horní Slavkov were granted |  | | Journal (article/letter/editorial) | | Schweizerbart’sche Verlagsbuchhandlung 2007 Magnesian wolframite from hydrothermal quartz veins in the Rochovce...Abstract: Magnesian wolframite with Mg-rich ferberite to MgWO4 dominated wolframite member (“magnesiowolframite”)... Slovenské Rudohorie Mts., Central Slovakia. Wolframite is associated with scheelite, molybdenite, pyrite...5 to 20 µm irregular remnants are preserved. Wolframite contains 2.7 to 7.8 wt.% MgO (20 – 58 mol.% ...“magnesiowolframite”, 35 – 64 mol.% ferberite and 7–16 mol.% hübnerite). The origin of the hydrothermal mineralization |  | | Journal (article/letter/editorial) | | Geológico Chileno, La Serena, 4–8 October, 2015. The Hübnerite/Ferberite ratio as an exploration tool for W-deposits...d’Orléans CNRS-BRGM, Orléans, France Understanding wolframite deposition processes is key to the development...Férollerie, Orléans, 45071, France ranging from hübnerite (MnWO4) to ferberite (FeWO4). Deposition style...extension to worldwide deposits. (A) H/F ratio > 60: wolframite precipitates from a Mn-rich magmatic fluid evolving...fluid-buffered path; (B) H/F ratio between 40 and 60: wolframite precipitates from a fluid buffered by granite/fluid |  | Talla, Dominik, Beran, Anton, Škoda, Radek, Losos, Zdeněk (2017) Polarized FTIR spectroscopic examination on hydroxylation in the minerals of the wolframite group, (Fe,Mn,Mg)[W,(Nb,Ta)][O,(OH)]4. American Mineralogist, 102 (4) 867-875 doi:10.2138/am-2017-5664 | Journal (article/letter/editorial) | | examination on hydroxylation in the minerals of the wolframite group, (Fe,Mn,Mg)[W,(Nb,Ta)][O,(OH)]4 Dominik...FTIR spectroscopic measurements of 11 natural wolframite single crystals from different occurrences revealed...prevailing hydrogen incorporation mechanism into wolframite. The assignment of the observed IR absorption...The results obtained in this study of natural wolframite crystals can be used to detect and analyze hydrous...technologically important tungstates. Keywords: Wolframite, FTIR spectroscopy, OH defects, nominally anhydrous |  | Monnier, Loïs, Melleton, Jérémie, Vanderhaeghe, Olivier, Salvi, Stefano, Lach, Philippe, Bruguier, Olivier, Benmammar, Anissa, Bailly, Laurent, Béziat, Didier, Gloaguen, Eric (2021) Episodic Precipitation of Wolframite during An Orogen: The Echassières District, Variscan Belt of France. Minerals, 11 (9) 923 doi:10.3390/min11090923 | Journal (article/letter/editorial) | | minerals Article Episodic Precipitation of Wolframite during An Orogen: The Echassières District, Variscan...Béziat, D.; Gloaguen, E. Episodic Precipitation of Wolframite during An Orogen: The Echassières District, Variscan...quartz-vein stockwork (1st generation of wolframite, called wolframite “a”; >360 Ma) of porphyry magmatic arc...followed by precipitation of a second generation of wolframite (termed “b”), from greisen fluids in the stockwork...Echassières district, led to the formation of the wolframite “c” generation during greisen alteration. Keywords: |  | Bobos, Iuliu, de Sá, Carlos Marques, Noronha, Fernando (2021) Mineralogy, Fluid Inclusions, and Oxygen Isotope Geochemistry Signature of Wolframite to Scheelite and Fe,Mn Chlorite Veins from the W, (Cu,Mo) Ore Deposit of Borralha, Portugal. Minerals, 12 (1) 24 doi:10.3390/min12010024 | Journal (article/letter/editorial) | | and Oxygen Isotope Geochemistry Signature of Wolframite to Scheelite and Fe,Mn Chlorite Veins from the...and Oxygen Isotope Geochemistry Signature of Wolframite to Scheelite and Fe,Mn Chlorite Veins from the...up.pt Abstract: Scheelitization of Mn-bearing wolframite, scheelite, quartz, and Fe,Mn-chlorite veins...OFluid values calculated for quartz-water and wolframite-water fractionation fall within the calculated...https:// doi.org/10.3390/min12010024 Keywords: wolframite scheelitization; Fe,Mn-chlorite; H2 O-CO2 (CH4 |  | | Journal (article/letter/editorial) | | fluids enriched in volatiles. Cassiterite I, wolframite I and rutile I crystallized during an early stage...composed initially by subordinate cassiterite II and wolframite II. Later during this main sulphide deposition...crystallization of wolframite II indicates enrichment in Mn of the fluid, compared with wolframite I, suggesting...hydrothermal evolution from the crystallization of wolframite II to ixiolite and rutile II responded to enrichment...Jálama Batholith, quartz veins, cassiterite, wolframite, rutile, ixiolite Received: 7 February 2012; |  | Ortelli, M., Kouzmanov, K., Wälle, M., Ubrig, N., Casanova, V. (2018) Fluid Inclusion Studies in Opaque Ore Minerals: I. Trace Element Content and Physical Properties of Ore Minerals Controlling Textural Features in Transmitted Near-Infrared Light Microscopy. Economic Geology, 113 (8) 1845-1860 doi:10.5382/econgeo.2018.4615 | Journal (article/letter/editorial) | | fluid inclusions in opaque ore minerals, such as wolframite, stibnite, pyrite, and enargite, by using near-infrared...ore minerals (pyrite, stibnite, enargite, and wolframite) from a series of magmatic-hydrothermal systems...As) content in pyrite, enargite (Fe, Bi), and wolframite (Sc, V, Fe). Despite this, the restricted distribution...such as sphalerite, cassiterite, scheelite, or hübnerite (Roedder, 1971). With the implementation of the..., 2002; Lindaas et al., 2002; Lüders, 2017), wolframite (Campbell and Robinson-Cook, 1987; Lüders, 1996; |  | | Journal (article/letter/editorial) | | Technology, Brennhausgasse 14, Freiberg, 09596, Germany b Institute of Precambrian Geology and Geochronology...Technology, Brennhausgasse 14, 09596 Freiberg, Germany A N D B O R I S V. B E L Y A T S K Y Downloaded...alteration processes. Sm-Nd mineral isochrons for wolframite and fluorite from the veins define an age of...mineralization. High εNd values obtained for wolframite and fluorite from the ore veins indicate an important...1994; Kempe and Belyatsky, 1994a), dating of wolframite-quartz mineralization is possible using the Sm-Nd |  | Kreissl, Stefan, Bolanz, Ralph, Göttlicher, Jörg, Steininger, Ralph, Tarassov, Mihail, Markl, Gregor (2016) Structural incorporation of W6+into hematite and goethite: A combined study of natural and synthetic iron oxides developed from precursor ferrihydrite and the preservation of ancient fluid compositions in hematite. American Mineralogist, 101 (12) 2701-2715 doi:10.2138/am-2016-5690 | Journal (article/letter/editorial) | | Raw Materials, Wilhelmstraße 56, 72074 Tübingen, Germany 2 Friedrich Schiller University, Institute of Geosciences...Mineralogy, Carl-Zeiss-Promenade 10, 07745 Jena, Germany 3 Karlsruhe Institute of Technology, ANKA Synchrotron...Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany 4 Bulgarian Academy of Sciences, Institute of Mineralogy...the Schwarzwald ore district, Black Forest, SW Germany, and from the Grantcharitza W deposit, Bulgaria...1993). Besides the most important W ore minerals, wolframite [(Fe,Mn)WO4] and scheelite (CaWO4), iron oxides |  | | Journal (article/letter/editorial) | | U-bearing minerals from the Vale de Abrutiga uranium mine area, Central Portugal Marina M. S. Cabral Pinto...muscovite, chlorite, zircon, monazite, ferberite, hübnerite, xenotime, pyrite, anatase, Fe oxides-hydroxides...uranium phosphates from Vale de Abrutiga uranium mine and Pinto et al. (2004) studied the pollution associated...U-bearing phases from the Vale de Abrutiga uranium mine, which occurs close to the contact with a Variscan...and geological map of the Vale de Abrutiga uranium mine. Modified from ENU (Internal Report). Geochemistry |  | | Journal (article/letter/editorial) | | mineralization in the pipe. Minerals such as molybdenite, wolframite, cassiterite, chalcopyrite, sphalerite, arsenopyrite...In the paragenetic sequence, cassiterite and wolframite mostly precipitated before sulfides; however... including base metal sulfides, molybdenite, wolframite, and cassiterite, in the altered rocks is less...deposit. These minerals include molybdenite, wolframite, cassiterite, Bi bearing minerals, and base metal...trends at Glen Eden. minerals (molybdenite, wolframite, and cassiterite) and base metal sulfides mostly |  | | Journal (article/letter/editorial) | | CHEMICAL COMPLEXITIES OF HYDROXYLAPATITE FROM THE SAPO MINE, BRAZIL H. Richards, S. Kelly, and J. Rakovan, Dept...University, Oxford, OH 45056. The Sapo pegmatite mine, located in the eastern portion of Minas Gerais...fluorapatite (gray core) on albite from the Sapo mine. Figure 2. Photomicrograph of a 1-cm zoned hydroxylapatite/...Menezes, L. 2009. Famous mineral localities: The Sapo mine, Ferruginha district, Conselheiro Pena, Minas Gerais...fulgurite formation. TRACING THE CONFLICT MINERAL WOLFRAMITE THROUGH CRYSTAL CHEMISTRY, STRUCTURE, AND SPECTRA |  | Breiter, Karel, Korbelová, Zuzana, Chládek, Štěpán, Uher, Pavel, Knesl, Ilja, Rambousek, Petr, Honig, Sven, Šešulka, Vojtěch (2017) Diversity of Ti–Sn–W–Nb–Ta oxide minerals in the classic granite-related magmatic–hydrothermal Cínovec/Zinnwald Sn–W–Li deposit (Czech Republic) European Journal of Mineralogy, 29 (4) 727-738 doi:10.1127/ejm/2017/0029-2650 | Journal (article/letter/editorial) | | frequently observed. The greisens host predominantly wolframite, scheelite and Ta-poor cassiterite, which are...columbite-(Fe) to -(Mn), Ta-poor cassiterite and all wolframite found in the greisen should be attributed to...8 Key-words: rutile; cassiterite; scheelite; wolframite; columbite-group minerals; pyrochlore-supergroup...spectacular crystals of smoky and milky quartz, wolframite, cassiterite, scheelite and zinnwaldite. The...minerals, cassiterite, wolframite and scheelite. Only bulk chemical analyses of wolframite have been reported |  | | Journal (article/letter/editorial) | | (columbite-tantalite, bismutotantalite, Nb-rutile, cassiterite, hübnerite, qitianlingite), phosphate minerals (triplite...pegmatite, and the relatively common presence of hübnerite and qitianlingite in the Mount Begbie pegmatite...Columbite Tantalite Bismutotantalite Cassiterite Hübnerite Qitianlingite Rutile Gahnite Iron oxides Manganese...Columbite Tantalite Bismutotantalite Cassiterite Hübnerite Qitianlingite Rutile Gahnite Iron oxides Manganese...Columbitetantalite series minerals, rutile, cassiterite, wolframite (hübnerite), qitianlingite, and bismutotantalite were |  | | Journal (article/letter/editorial) | | Ottens specimen and photo. The Yaogangxian Tungsten Mine Downloaded by [Florida International University]...OTTENS Klingenbrunn-Bahnhof 24 94518 Spiegelau Germany ottens-mineralien@t-online.de ROBERT B. COOK Department...of all tungsten produced. Although most artisanal mine laborers are categorized as farmers for statistical...specimen production is probably the Yaogangxian mine in Hunan Province. Geography Figure 4. Preparing...other important mining centers. The Yaogangxian mine is located in Yizhang County, Chenzhou Prefecture |  | Goldmann, Simon, Melcher, Frank, Gäbler, Hans-Eike, Dewaele, Stijn, Clercq, Friso, Muchez, Philippe (2013) Mineralogy and Trace Element Chemistry of Ferberite/Reinite from Tungsten Deposits in Central Rwanda. Minerals, 3 (2) 121-144 doi:10.3390/min3020121 | Journal (article/letter/editorial) | | Resources (BGR), Stilleweg 2, Hannover D-30655, Germany; E-Mails: frank.melcher@bgr.de (F.M.); hans-eike...Rwanda occurs as the iron-rich endmember of the wolframite solid solution series (ferberite) and in the... Minerals 2013, 3 122 Keywords: tungsten deposits; wolframite; ferberite; reinite; mineralogy; trace element...The most important tungsten minerals are the wolframite solid solution series [(Fe,Mn)WO4] and scheelite...(including skarn, greisen and hydrothermal veins). Wolframite represents the dominant tungsten mineral in Central |  | | Journal (article/letter/editorial) | | Mn-chlorite with scheelite I; (2) Fe-chlorite with wolframite + scheelite II ± sulfide; (3) Fe,Mg-chlorite...from 400°C to 500°C, for Fe-chlorite (Mn-rich wolframite + scheelite II ± sulfide) from 250 to 350°C,...Panasqueira. It was mined from 1903 to 1985 for wolframite, scheelite and argentiferous chalcopyrite. The...tungsten (i.e. wolframite). The ore mineral assemblage consists of tungstate (wolframite and scheelite)...structure (North Sto. António at –160 m): W – wolframite; Sch – scheelite; Fe-chlorite; (d ) sample from |
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