... 3 (ferrimolybdite), CaMoO 4 (powellite), and PbMoO 4 (wulfenite). From these diagrams it appears that wulfenite is one of the most stable Mo minerals ... 5 to 7.7 was plotted on the wulfenite solubility diagram. Of the 13 soils used in ... study, only one showed equilibrium with respect to wulfenite. When wulfenite was added to several other soils, the molybdenum solubility increased 10‐ to 100‐fold, confirming that wulfenite was not initially present. These wulfenite‐amended soils showed a close correspondence between soluble ...
Tópico(s): Radioactive element chemistry and processing
1977 - Wiley | Soil Science Society of America Journal
David E. Hibbs, C. M. Jury, Peter Leverett, I. R. Plimer, Peter A. Williams,
... The single-crystal X-ray structure of tungstenian wulfenite- I 4 1 / a containing 10 mol.% WO ... a (0,0,0) in the lattice. Tungstenian wulfenite- I 4̄ (‘chillagite’) from the Christmas Gift mine, ... Ý,Ü). These give a composition corresponding to wulfenite 64 stolzite 36 , in agreement with analytical data. ... explanation for the origin of hemihedrism in the wulfenite-stolzite series.
Tópico(s): Iron-based superconductors research
2000 - Cambridge University Press | Mineralogical Magazine
Andrea Bloise, Luigi Dattola, Ignazio Allegretta, Roberto Terzano, Mirco Taranto, Domenico Miriello,
... article contains mineralogical and chemical data of the wulfenite (PbMoO4) sampled from mine of Fiumarella in Calabria region (Southern Italy). Wulfenite is a rare mineral belonging to the class ... as barite, galena, cerussite, anglesite, fluorite and chalcopyrite, wulfenite was also detected. Wulfenite crystals are bipyramidal, few microns in size and ...
Tópico(s): Metal Extraction and Bioleaching
2018 - Elsevier BV | Data in Brief
Martin J Crane, Ray L. Frost, Peter A. Williams, J. Theo Kloprogge,
Abstract Raman spectra of chillagite, wulfenite, stolzite, scheelite and wolframite were obtained at 298 and 77 K using a Raman microprobe in combination with a thermal stage. Chillagite is a solid solution of wulfenite and stolzite. The spectra of these molybdate minerals ...
Tópico(s): Glass properties and applications
2002 - Wiley | Journal of Raman Spectroscopy
L. Secco, Fabrizio Nestola, A. Dal Negro,
Abstract Three natural crystals of the wulfenite (PbMoO 4 )—stolzite (PbWO 4 ) series were investigated by single-crystal X-ray diffraction. The results indicate that the symmetry is I4 1 /a from nearly pure wulfenite to intermediate compositions, in contrast to previous work ... I4 1 /a symmetry is retained throughout the wulfenite— stolzite.
Tópico(s): Polyoxometalates: Synthesis and Applications
2008 - Cambridge University Press | Mineralogical Magazine
Michael Conlan, K. Ulrich Mayer, Randy Blaskovich, Roger Beckie,
... mobility is limited by powellite (CaMoO 4 ) and wulfenite (PbMoO 4 ) precipitation under neutral pH conditions with ... Ca and Pb present. Batch experiments demonstrate that wulfenite forms almost instantaneously and effectively removes Pb from ... A column experiment provides further evidence of rapid wulfenite formation and kinetically limited powellite formation. Both powellite and wulfenite have also been identified in molybdenum-bearing carbonate- ...
Tópico(s): Arsenic contamination and mitigation
2012 - Zoological Society of London | Geochemistry Exploration Environment Analysis
Fatima Africano, G. Van Rompaey, Alain Bernard, F. Le Guern,
... observed at other volcanoes are the occurrence of wulfenite (PbMoO4) and several mixed chlorides. This is the first report of wulfenite in fumarolic deposits. Thermochemical modeling shows that wulfenite precipitates between 540° and 490°C from a ... temperature gases. Natural sublimates of metallic elements (molybdenite, wulfenite, anglesite, Tl-Pb and Tl-Bi sulfides, Mo ...
Tópico(s): Geochemistry and Geologic Mapping
2014 - Springer Nature | Earth Planets and Space
Мira R. Bissengaliyeva, M.A. Bespyatov, Daniil B. Gogol,
The heat capacity of natural lead molybdate (wulfenite, PbMoO4) has been measured by the method of vacuum adiabatic calorimetry over the temperature range of (55 to 320) K, and its thermodynamic ... compound calcium tungstate, CaWO4. The values of the wulfenite heat capacity over the range of (0 to ...
Tópico(s): Nuclear materials and radiation effects
2010 - American Chemical Society | Journal of Chemical & Engineering Data
Elliott K. Skierszkan, K. Ulrich Mayer, Dominique Weis, J. Roberston, Roger Beckie,
... fractionation during the precipitation of powellite (CaMoO4) and wulfenite (PbMoO4). These minerals act as important sinks of ... formed at early time. Molybdenum isotope data during wulfenite precipitation could reasonably be fitted using the Rayleigh ...
Tópico(s): Heavy metals in environment
2018 - Elsevier BV | Geochimica et Cosmochimica Acta
Baoxu Song, Dongping Tao, Peilun Li, Xiaodong Wang, Jincheng Ran,
Natural wulfenite is lead molybdate (PbMoO4), which has extensive and vital economical values based on its rarity and molybdenum ... and guidance on in-deep understanding of the wulfenite leaching and flotation mechanisms.
Tópico(s): Electronic and Structural Properties of Oxides
2019 - Elsevier BV | Results in Physics
... a thermal analysis study of the synthesis of wulfenite (lead molybdate) by the sintering of cerussite or ... its decomposition, into lead oxide. The formation of wulfenite takes place at 520°C in an exothermic ... molybdite with lead oxide reveals the formation of wulfenite at 500°C. The melting and volatilization of ... sharp endothermic peak at 980°C. The resulting wulfenite is pale-yellow in thin section, and crystallizes ...
Tópico(s): Thermal and Kinetic Analysis
1996 - | Journal of thermal analysis
Ildikó Cora, Mátyás Czugler, István Dódony, Aleksander Rečnik,
Wulfenite [lead(II) molybdate(VI)] is known as a scheelite structure in the I4(1)/a space group. The structure of the unusual `hemimorphic' wulfenite crystals from the Meǽica mine was refined in ...
Tópico(s): Solid-state spectroscopy and crystallography
2011 - Wiley | Acta Crystallographica Section C Crystal Structure Communications
Otto E. O. Zeman, Jennifer Steinadler, Rupert Hochleitner, Thomas Bräuniger,
... are generated by the Wyckoff multiplicity. The mineral wulfenite, PbMoO4, also crystallises in a tetragonal space group, ... making the solution of the target compound (here: wulfenite) possible. The 207Pb CS tensors thus determined are ... 1), δ22PAS=(-2074±1), δ33PAS=(-1898±1) for wulfenite.
Tópico(s): Solid-state spectroscopy and crystallography
2019 - Elsevier BV | Solid State Nuclear Magnetic Resonance
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE CRYSTAL STRUCTURES OF WULFENITE AND SCHEELITE.Roscoe G. DickinsonCite this: J. Am. Chem. Soc. 1920, 42, 1, 85–93Publication Date (Print):January 1, 1920Publication History Published online1 ...
Tópico(s): Mineralogy and Gemology Studies
1920 - American Chemical Society | Journal of the American Chemical Society
... 0·2 to 1% U 3 O 8 . Wulfenite, both platy and pyramidal in habit, occurs at ...
Tópico(s): Geochemistry and Elemental Analysis
1961 - | Mineralogical Magazine and Journal of the Mineralogical Society
... every known structure has been applied to the wulfenite structure. The following PBC's have been analyzed: ...
Tópico(s): Solid-state spectroscopy and crystallography
1971 - Elsevier BV | Journal of Crystal Growth
B. M. Petrunic, Tom A. Al, Louise Weaver, D. C. Hall,
... Si-O phase, an In-P phase, and wulfenite [PbMoO 4] . The Fe-Zn-As-O phase ... phase, which is likely dzhalindite [In(OH) 3 ]. Wulfenite was found in the interstitial voids present in ...
Tópico(s): Coal and Its By-products
2009 - Elsevier BV | Applied Geochemistry
Ray L. Frost, J. Bouzaid, Ian S. Butler,
... those of the closely related molybdate‐bearing minerals, wulfenite, powellite, lindgrenite, and iriginite, which show common paragenesis. ... with the values of 871 cm−1 for wulfenite and scheelite and 879 cm−1 for powellite. ...
Tópico(s): Radioactive element chemistry and processing
2007 - Taylor & Francis | Spectroscopy Letters
Мira R. Bissengaliyeva, Daniil B. Gogol, N. S. Bekturganov, Shynar T. Taimassova, M.A. Bespyatov, Abdrazak A. Zhusipov,
The heat capacity of natural lead molybdate (wulfenite, PbMoO4) has been measured by the method of vacuum adiabatic calorimetry over the temperature range of (4.3 to 80) K, and its ...
Tópico(s): Crystal Structures and Properties
2011 - American Chemical Society | Journal of Chemical & Engineering Data
J. Sejkora, Jakub Plášil, Ivana Cı́sařová, Radek Škoda, Jan Hloušek, F. Veselovský, Ivana Jebavá,
... 16 apfu).Among the supergene minerals, cerussite, anglesite, wulfenite, philipsbornite-segnitite minerals, pyromorphite and metazeunerite were determined ... to 4 wt.% As 2 O 5 ) in wulfenite is particularly noteworthy.Characteristic of the studied mineral ...
Tópico(s): Clay minerals and soil interactions
2011 - Czech Geological Society | Journal of Geosciences
Stuart J. Mills, A. R. Kampf, Andrew G. Christy, R. M. Housley, George R. Rossman, Robert E. Reynolds, J. Marty,
... cerussite, chlorargyrite, chrysocolla, hemimorphite, kettnerite, perite, quartz and wulfenite, while at the Bird Nest drift, it is ... goethite, khinite, mcalpineite, thorneite, timroseite, paratimroseite, quartz and wulfenite. It has also been found at the Aga ...
Tópico(s): Nuclear materials and radiation effects
2014 - Cambridge University Press | Mineralogical Magazine
Parviz Holakooei, Amir‐Hossein Karimy, Ata Hasanpour, Omid Oudbashı,
... cover some parts of the red lead. Peculiarly, wulfenite (PbMoO4) associated with vanadinite (Pb5(VO4)3Cl) was ...
Tópico(s): Building materials and conservation
2016 - Elsevier BV | Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy
Thaïs Couasnon, Alexandre Gélabert, Georges Ona-Nguéma, Sandrine Zanna, Bénédicte Ménèz, François Guyot,
... stable mineral phases expected to precipitate are either wulfenite PbMoO4 or cerussite PbCO3. However, observations by electron ... bearing systems, the precipitation of the thermodynamically-predicted wulfenite phase is delayed compared to the abiotic experiment ...
Tópico(s): Metal Extraction and Bioleaching
2018 - Elsevier BV | Chemical Geology
Keng Xie, Haibei Wang, Shengdong Wang,
... to extract molybdenum and lead from low-grade wulfenite ore containing 2.87% Mo and 9.39% ...
Tópico(s): Minerals Flotation and Separation Techniques
2019 - Elsevier BV | Transactions of Nonferrous Metals Society of China
Julia M. Bayne, Ian S. Butler,
... Raman spectra have been obtained for the mineral wulfenite [lead(II) molybdate(VI), PbMoO4], a main constituent ...
Tópico(s): Building materials and conservation
2013 - Taylor & Francis | Spectroscopy Letters
Tópico(s): Solid-state spectroscopy and crystallography
1955 - Mineralogical Society of America | American Mineralogist
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1875 - Cambridge University Press | Geological Magazine
... phosgénite, pseudoboleite, β rosélite, serpierite, tyrolite, uranospinite, vanadinite, wulfénite, zeunérite. Trois espèces minérales nouvelles ont été décrites : ...
Tópico(s): Geological and Geochemical Analysis
1963 - Wentworth Press | Bulletin de la Société française de Minéralogie et de Cristallographie
... The stability fields of supergene lead oxide minerals, wulfenite, cerussite, anglesite, and Cd minerals are calculated in ...
Tópico(s): Clay minerals and soil interactions
1960 - | Economic Geology
Paul C. Lauterbur, John Burke,
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Tópico(s): Advanced Condensed Matter Physics
1965 - American Institute of Physics | The Journal of Chemical Physics