Results 71 to 80 of about 47,799 (141)

A mineralogical and isotopic study of the historic monomict eucrite Padvarninkai

Meteoritics &Planetary Science, Volume 59, Issue 9, Page 2505-2522, September 2024.
Abstract The Padvarninkai meteorite is a relatively understudied eucrite, initially misclassified as a shergottite given its strong shock characteristics. In this study, a comprehensive examination of the petrology; mineral composition; major, minor, and trace element abundances; and isotopic composition (C, O) is presented.
T. J. Barrett, A. J. King, G. Degli‐Alessandrini, S. J. Hammond, E. Humphreys‐Williams, B. Schmidt, R. C. Greenwood, F. A. J. Abernethy, M. Anand, E. Rudnickaitė   +9 more
wiley   +1 more source

The atomic-scale structure of rare earth elements in deep-sea sediments facilitates their extractability

Communications Earth & Environment
Deep-sea rare earth elements (REEs) have attracted global interest as terrestrial resources become less available and demand rises sharply. Seafloor REEs are hosted in authigenic carbonate fluorapatite (a-CFA), formed by the precipitation of calcium and ...
Alain Manceau, Andrea Giacomelli, Yan Li, Anne-Claire Gaillot, Jianlin Liao, Lorenzo Spadini, Andrea Koschinsky, Olivier Mathon, Stephan N. Steinmann   +8 more
doaj   +1 more source

Apatite-iron oxide-hosted REE mineralisation at Kopslahyttan, NW Bergslagen, Sweden

, 2015
Of the different types of REE mineralisation known from the Fennoscandian shield, the Palaeoproterozoic apatite-iron oxide ores of Kiruna type represent one resource type with significant potential.
Hellström, Fredrik,, Jonsson, Erik,, Persson Nilsson, Katarina,, Högdahl, Karin,   +3 more
core  

Mineral chemistry of monazite-(Nd), xenotime-(Y), apatite, fluorite and zircon hosting in lamprophyre dyke in Abu Rusheid area, South Eastern Desert, Egypt

Geologija, 2012
The studied mineralized lamprophyre dyke in Abu Rusheid area is trending NNW-SSE, and occurs withinAbu Rusheid mineralized shear zone, measuring 0.2 - 1.0 m in width and 0.5 - 1.0 km in length. It was emplacedparallel with the Abu Rusheid shear zone. The
Mohamed A. Ali
doaj  

Britholite - hellandite intergrowths and associated REE-minerals from the alkali-syenitic ejecta of the Vico volcanic complex (Latium, Italy): petrological implications bearing on REE mobility in volcanic systems

, 1999
This paper describes the occurrence of Th-rich hellandite-(Ce) and britholite-(Ce) within a volcanic ejectum from a pyroclastic formation of the Vice volcanic complex, north of Rome, Italy.
WILLIAMS T. C, CAPRILLI E., BELLATRECCIA, FABIO, CABELLA R, OBERTI R, DELLA VENTURA, Giancarlo, CABELLA R., WILLIAMS T. C., OBERTI R., CAPRILLI E, WILLIAMS C. T., CABELLA, ROBERTO, DELLA VENTURA G., BELLATRECCIA F.   +13 more
core   +3 more sources

REE distribution and mineralogy in the Blötberget Apatite-Iron Oxide deposit; insights from the Kalv ore body : An Integrated Study Using XCT-XRF Core Scanning, Petrography and SEM-EDS

Rare earth elements (REEs) are critical raw materials with growing demand in green technologies and limited global supply. Iron oxide-apatite (IOA) deposits can host significant REE concentrations, particularly in minerals such as fluorapatite, monazite ...
Arnover, Maria
core   +2 more sources

The Effect of SiO2 on Trace Element Partitioning between Fluorapatite and Carbonatite melt

Carbonatites are considered the primary source of rare earth elements (REE), which are of growing interest due to their essential role in the production of sustainable technologies.
Jasper Berndt, Melanie J. Sieber, Stephan Klemme, Malin Bach   +3 more
core   +1 more source

Formation of hydrothermal REE-phosphate deposits [PDF]

, 2019
Rare earth elements (REE) are important metals used in green and low-carbon energy and information technologies and are widely used for geological petrogenetic studies.
Andersson, Stefan S.
core  

Isomorphic capacity of combustion metamorphic melilite solid solutions

Записки Горного института
Partitioning of trace elements between minerals crystallized from Ca-rich Si-undersaturated melts is constrained for the first time in samples of coarse combustion metamorphic (CM) melt rocks (paralavas) from the Hatrurim Formation.
Ella V. Sokol, Anna S. Polovykh, Svetlana N. Kokh, Ivan S. Karputin, Olga A. Kozmenko   +4 more
doaj  

Apatite paragenesis in the Bayan Obo REE Nb-Fe ore deposit, Inner Mongolia, China

, 1997
Many studies of the Bayan Obo REE-Nb-Fe ore deposit have suggested that the REE mineralization was episodic. To investigate this, mineralized rocks from the main and east orebodies at Bayan Obo were selected for a paragenetic study of apatite. Apatite is
Paul Henderson, Henderson, P., Campbell, Linda S., Linda S. Campbell, Henderson, Paul, Campbell, L.S.   +5 more
core   +1 more source