Results 11 to 20 of about 7,317 (263)
An X-ray diffraction method for determining the amount of xenotime in a zircon sample [PDF]
Bulletin of the Geological Society of Finland, 1984 An X-ray method was developed for determining the amount of xenotime or zircon in a zircon ‒ xenotime sample. Such analyses are useful in establishing whether a solid solution exists between xenotime and zircon or whether there is a separate xenotime ...
R. Törnroos
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Metamict zircon from Mozambique [PDF]
Bulletin of the Geological Society of Finland, 1985 Metamict zircon from granite pegmatites of Zambézia, Mozambique has been studied by annealing, microprobe, X-ray diffraction, DT and TG analysis, and IR spectroscopy. The specimens are contaminated by epitaxially intergrown xenotime.
R. Törnroos
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Mineralium Deposita, 2023 Attempts to geochemically distinguish between metamorphic-hydrothermal systems that form orogenic gold deposits and both reduced and oxidized magmatic-hydrothermal systems using isotopes or metal associations have proven ambiguous, particularly for ...
Ryan D. Taylor +2 more
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Anatomy of intergrowth OF florencite and xenotime crystals with oscillatory zoning from veins of the svodovy au-ree occurrence, subpolar u [PDF]
Минералогия, 2020 The morphology and anatomy of a paragenetic intergrowth of REE minerals (xenotime and florencite) from veins of Svodovy Au-REE occurrence (Subpolar Urals) are described.
S.A. Repina, V.A. Muftakhov
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THORIUM, URANIUM AND RARE EARTH MINERALIZATION IN ROCKS OF THE UGAKHAN GOLD DEPOSIT, BODAIBO ORE REGION [PDF]
Минералогия, 2021 The paper reports on the results of studies of ore-bearing rocks of the Ugakhan gold deposit (Bodaybo district): metasandstones, metasiltstones and carbonaceous shales.
E.V. Shepel +3 more
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Geosphere, 2023 The Proterozoic tectonic evolution of the south-western USA remains incompletely understood due to limited constraints on the timing and conditions of the tectono-metamorphic phases and depositional age of metasedimentary successions. We integrated multi-
Ian W. Hillenbrand +7 more
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Geological Society Special Publication, 2023 Monazite-xenotime thermometry is a potentially powerful technique for understanding the evolution of earth systems. While a rich set of experimental and empirical datasets are available for monazite-xenotime equilibria, five different thermometric ...
C. Mako, M. Caddick, R. Law, J. Thigpen
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Preparation and characterization of PbTi0(3) ceramics modified by a natural mixture of rare earth oxides of xenotime [PDF]
Materials Research, 2013 Lead titanate ceramics modified by xenotime (Xm) with nominal composition (Pb, Xm)TiO3, Xm 10 or 15 mol %, were prepared by the conventional oxide mixture technique. Xenotime is a natural mineral consisting of a mixture of rare earth oxides.
Jair Baltazar-Rodrigues +4 more
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Lanthanide Sulfate Recovery by Synergistic Dimethyl Ether and Na<sub>2</sub>SO<sub>4</sub> Fractional Crystallization. [PDF]
ChemSusChemThis work demonstrates synergistic lanthanide salt recovery from an aqueous magnet leachate to single ppm concentrations using Na2SO4 combined with dimethyl ether crystallization. This waste valorization process minimizes chemicals consumed and waste generated while maximizing the recovery of a critical material product. Lanthanides (Lns) are important
Tolbert C +6 more
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Palaeoproterozoic prograde metasomatic-metamorphic overprint zones in Archean tonalitic gneisses, eastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1999 Several occurrences of coarse-grained kyanite rocks are exposed in the Archaean area of eastern Finland in zones trending predominantly northwest-southeast that crosscut all the Archaean structures and, locally, the Palaeoproterozoic metadiabase dykes ...
M. Pajunen, M. Poutiainen
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