Results 1 to 10 of about 494 (105)
The parisite–(Ce) enigma: challenges in the identification of fluorcarbonate minerals [PDF]
Mineralogy and Petrology, 2020 AbstractA multi-methodological study was conducted in order to provide further insight into the structural and compositional complexity of rare earth element (REE) fluorcarbonates, with particular attention to their correct assignment to a mineral species.
Zeug, Manuela +9 more
europepmc +11 more sources
Multivariate Statistical Analysis on a SEM/EDS Phase Map of Rare Earth Minerals. [PDF]
Scanning, 2020 The scanning electron microscope/X‐ray energy dispersive spectrometer (SEM/EDS) system is widely applied to rare earth minerals (REMs) to qualitatively describe their mineralogy and quantitatively determine their composition. The performance of multivariate statistical analysis on the EDS raw dataset can enhance the efficiency and the accuracy of phase
Teng C, Gauvin R.
europepmc +2 more sources
RöENTGENITE-(CE) AND OTHER REE FLUORCARBONATES FROM VEIN no. 35, VISHNEVYE MOUNTAINS, SOUTHERN URALS [PDF]
Минералогия, 2019 A mineral assemblage including REE fluorcarbonates (röntgenite-(Ce) Ca2Ce3(CO3)5F3 , parisite-(Ce) CaCe2(CO3 )3F2 , synchisite-(Ce) CaCe(CO3 )2F and bastnäsite-(Ce) Ce(CO3 )F) was discovered at the dumps of the Vein № 35 open pit, Mt.
A.V. Kasatkin +5 more
doaj +3 more sources
KUKHARENKOITE-(Ce) AND ITS MINERAL ASSEMBLAGE IN PEGMATITES OF THE VISHNEVYE MOUNTAINS (SOUTH URALS) [PDF]
Минералогия, 2021 A rare Ba and REE fluorocarbonate kukharenkoite-(Ce) Ba2 Ce(CO3 )3 F with empirical formula (Ba1.88Sr0.17)2.05(Ce0.53La0.31Nd0.11)0.95(CO3 )3 F was found in alkali pegmatite of vein no. 35 in the Vishnevye Mountains, South Urals. Kukharenkoite-(Ce) forms
V.I. Popova +4 more
doaj +1 more source
Geochemistry, Geophysics, Geosystems, Volume 24, Issue 9, September 2023., 2023 Abstract Ancient magnetization(s), often recorded by hematite (Fe2O3), provide key paleomagnetic constraints on plate interactions through time. Primary remanent magnetizations may be modified or overprinted by secondary processes that complicate interpretations of paleomagnetic data. Hematite (U‐Th)/He (hematite He) dating has the potential to resolve
Jordan L. Jensen +2 more
wiley +1 more source
Tectonics, Volume 42, Issue 4, April 2023., 2023 Abstract Structures associated with Ediacaran‐Ordovician alkaline magmatism and the timing of rare earth element (REE) mineralization in the Wet Mountains, CO, were analyzed using field, geophysical, and U‐Th‐Pb isotope methods to interpret their tectonic setting in the context of previously proposed rift models. The Wet Mountains are known for thorium
Benjamin P. Magnin +2 more
wiley +1 more source
Probing luminescence of rare earth ions in natural pink fluorites using Raman microscopes
Journal of Raman Spectroscopy, Volume 53, Issue 8, Page 1464-1470, August 2022., 2022 Raman microscopy allows to observe high‐resolution emission bands of rare earth impurities in natural fluorites and by extension also in other minerals. This is demonstrated in this work for spectra of various pink fluorites obtained with Raman microscopes. Abstract It is well‐known that many natural fluorite crystals contain rare earth ions.
Hans Hagemann +4 more
wiley +1 more source
Global earth mineral inventory: A data legacy
Geoscience Data Journal, Volume 8, Issue 1, Page 74-89, June 2021., 2021 The ‘Global Earth Mineral Inventory’ (GEMI) can be considered as a network with every node and edge representing some feature of the datasets. Exploring combinations of the network gives the researcher a particular view of the data required for the task at hand.
Anirudh Prabhu +14 more
wiley +1 more source
Late hydrothermal mineralization in a fenitic halo of the Ilmenogorsk alkaline complex (South Urals) [PDF]
МинералогияLate hydrothermal veins exposed in the northern wall of the Novy peeble quarry are studied in a fenitic halo of the western contact of the Ilmenogorsk miaskite complex (South Urals) using scanning electron microscopy, Raman spectroscopy and X-ray ...
M.A. Rassomakhin +3 more
doaj +1 more source
Vielleaureite-(Ce), a new epidote of the dollaseite group, coexisting with Mn-dominant hellandite in Mn deposits of the central Pyrenees [PDF]
European Journal of MineralogyThe new rare-earth element (REE) bearing epidote-supergroup mineral vielleaureite-(Ce), Mn2+Ce(MgAlMn2+)(Si2O7)(SiO4)F(OH), is described from a Paleozoic stratiform Mn ore deposit at the Coustou mine above the village of Vielle-Aure, Hautes Pyrénées ...
A. Ragu +4 more
doaj +1 more source