Results 11 to 20 of about 70 (65)
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.
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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
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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
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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
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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
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Geofluids, Volume 2018, Issue 1, 2018., 2018 Studying the speciation and mineral‐fluid partitioning of the rare earth elements (REE) allows us to delineate the key processes responsible for the formation of economic REE mineral deposits in natural systems. Hydrothermal REE‐bearing calcite is typically hosted in carbonatites and alkaline rocks, such as the giant Bayan Obo REE deposit in China and ...
Emily P. Perry +2 more
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GeoresursyThe aim of this work is to characterize rare earth fluorocarbonates, first discovered in carbonaceous shales of the Ishlya graben, and to develop an acceptable genetic model of their formation.Riftogenic formations are represented by interbedding of ...
S. G. Kovalev, S. S. Kovalev
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Resource Geology, Volume 76, Issue 1, January/December 2026.The western Lugiin Gol REE deposit, related to the Lugiin Gol alkali intrusive complex, consists of carbonatites filling NE‐trending fractures in sedimentary rock. The carbonatites are dominated by carbonate minerals and fluorite and host REE fluorocarbonates, including synchysite‐(Ce), bastnaesite‐(Ce), parisite‐(Ce), and synchysite–bastnaesite ...
Bong Chul Yoo +5 more
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Rare‐Earth Mineralization in Dong Pao Deposit, Laichau Province, Vietnam
Resource Geology, Volume 75, Issue 1, January/December 2025.ABSTRACT The Dong Pao deposit in northern Vietnam is associated with the Paleogene Dong Pao Syenite Complex, which intruded into the limestone of the Triassic age. Although the Dong Pao deposit has been attracting exploration for decades as a promising rare earth deposit, it has not been well studied in terms of mineralization style and formation ...
Tinh Thanh Bui +5 more
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Hosts of Insect Egg‐Parasites in North and South America. II
, 1911 Psyche: A Journal of Entomology, Volume 18, Issue 4, Page 146-153, 1911.
A. Arsène Girault
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