Results 1 to 10 of about 496 (100)

The parisite-(Ce) enigma: challenges in the identification of fluorcarbonate minerals. [PDF]

Mineral Petrol, 2021
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 M, Nasdala L, Ende M, Habler G, Hauzenberger C, Chanmuang N C, Škoda R, Topa D, Wildner M, Wirth R.   +9 more
europepmc   +12 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

Adsorption of rare earth elements in regolith-hosted clay deposits. [PDF]

Nat Commun, 2020
Global resources of heavy Rare Earth Elements (REE) are dominantly sourced from Chinese regolith-hosted ion-adsorption deposits in which the REE are inferred to be weakly adsorbed onto clay minerals.
Borst AM, Smith MP, Finch AA, Estrade G, Villanova-de-Benavent C, Nason P, Marquis E, Horsburgh NJ, Goodenough KM, Xu C, Kynický J, Geraki K.   +11 more
europepmc   +8 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, R. Škoda, F. Nestola, A.M. Kuznetsov, E.V. Belogub, A.A. Agakhanov   +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, M.A. Rassomakhin, V.A. Popov, A.M. Kuznetsov, S.M. Lebedeva   +4 more
doaj   +1 more source

Evaluating the Compatibility of Hematite (U‐Th)/He Data and Hematite‐Carried Secondary Magnetizations: An Example From the Colorado Front Range

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, Alexis K. Ault, John W. Geissman   +2 more
wiley   +1 more source

Ediacaran‐Ordovician Magmatism and REE Mineralization in the Wet Mountains, Colorado, USA: Implications for Failed Continental Rifting

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, Yvette D. Kuiper, Eric D. Anderson   +2 more
wiley   +1 more source

Geology, geochemistry and geochronology of the Songwe Hill carbonatite, Malawi [PDF]

, 2017
Songwe Hill, Malawi, is one of the least studied carbonatites but has now become particularly important as it hosts a relatively large rare earth deposit.
Brady, Aoife E., Broom-Fendley, Sam, Dawes, Will, Gunn, Gus, Horstwood, Matthew S.A., Mtegha, James, Wall, Frances, Woolley, Alan R.   +7 more
core   +5 more sources

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, Sareh Ayoubipour, Teresa Delgado, Cédric Schnyder, Edwin Gnos   +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, Shaunna M. Morrison, Ahmed Eleish, Hao Zhong, Fang Huang, Joshua J. Golden, Samuel N. Perry, Daniel R. Hummer, Jolyon Ralph, Simone E. Runyon, Kathleen Fontaine, Sergey Krivovichev, Robert T. Downs, Robert M. Hazen, Peter Fox   +14 more
wiley   +1 more source