Results 11 to 20 of about 2,496,797 (168)

Low Temperature Leaching Behavior of Allanite-(Ce) in Treating an Allanite-Concentrate by Sulfuric Acid [PDF]

open access: yes, 2023
Allanite is a common REE-bearing silicate mineral, which is found in potentially mineable abundances in many areas but has not been economically exploited for the REEs in an industrial scale.
Kärenlampi, Kimmo   +3 more
core   +1 more source

Site splitting at M3 in allanite-(Ce)

open access: yes, 2022
We report the crystal structure of allanite-(Ce), with composition (Ca1.0REE0.90.1)(sigma 2.0)(Al1.46Fe0.523+Fe0.762+Mg0.12Ti0.15)(sigma 3.01)Si3O12(OH) from the Xinfeng rare earth element (REE)-bearing granite in Guangdong Province, China.
Dick, Jeffrey   +6 more
core   +1 more source

Mineralogical and geochemical aspects of rare-earth elements behavior during metamorphism (on the example of the Upper Precambrian structural-material complexes of the Bashkir megaanticlinorium, South Urals)

open access: yesGeoresursy, 2020
The article provides new data on geochemistry and mineralogy of rare-earth elements (REE) in rocks of structural-material complexes of the Bashkir megaanticlinorium, which underwent metamorphic transformations of various nature: contact metamorphism ...
Sergey G. Kovalev   +2 more
doaj   +1 more source

Wumuite (KAl0.33W2.67O9) – a new mineral with an HTB-type structure from the Panzhihua–Xichang region in China [PDF]

open access: yesEuropean Journal of Mineralogy, 2020
Wumuite, ideally KAl0.33W2.67O9, is a new mineral species found in the Neoproterozoic Sinian light-weathered biotite–quartz monzonite in the southern part of the Panzhihua–Xichang region (Nanyang village: 26∘46′8.21′′ N, 101∘27′13.86′′ E ...
Y. Xue, Y. Xue, G. Li, Y. Xie
doaj   +1 more source

Strain partitioning in host rock controls LREE release from allanite-(Ce) in subduction zones [PDF]

open access: yes, 2020
Combined microstructural, mineral chemical, X-ray maps, and X-ray single-crystal diffraction analyses are used to reveal the rheological behaviour of individual grains of magmatic allanite relicts hosted in variably deformed metagranitoids at Lago della ...
Zanoni, Davide   +3 more
core   +1 more source

Geology and Geochemistry of the Early Proterozoic Kortejärvi and Laivajoki Carbonatites, Central Fennoscandian Shield, Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1997
This paper provides for the first time extensive petrological, mineralogical and geochemical data on the early Proterozoic Kortejärvi and Laivajoki carbonatites, northern Finland, which form metamorphosed and highly strained bodies 2 and 4 km long within
J. Nykänen, K. Laajoki, J. Karhu
doaj   +1 more source

REE AND SR MINERALIZATION WITH PERRIERITE-(CE) IN ALKALINE SILICATE-CARBONATE ASSEMBLAGE OF THE CONTACT ZONE OF THE VISHNEVOGORSK BLOCK (SOUTH URALS) [PDF]

open access: yesМинералогия, 2016
The REE and Sr minerals (perrierite-(Ce), allanite-(Ce), ankilite-(Ce), monazite-(Ce), «cerphosforhuttonite») were identified in the apatite-albite-phlogopite-calcite veins of the contact zone of the Vishnevogorsk miaskite block.
E.P. Makagonov, V.A. Muftakhov
doaj  

First data on Th–REE mineralization in mafic-ultramafic igneous rocks of the western slope of the Southern Urals

open access: yesGeoresursy
The article presents the first data on rare earth mineralization in differentiated intrusions on the western slope of the Southern Urals. When studying the mineralogy of the rocks of the Shuida, Misaelga, Ishliy and Lysogorsk complexes, minerals of rare ...
S. G. Kovalev, S. S. Kovalev
doaj   +1 more source

Allanite Petrochronology in Fresh and Retrogressed Garnet–Biotite Metapelites from the Longmen Shan (Eastern Tibet) [PDF]

open access: yes, 2018
Linking the timing of allanite growth to metamorphic conditions in metapelites is particularly challenging because of the large variety of allanite textures and chemical compositions.
Janots, Emilie   +9 more
core   +1 more source

Rare-earth mineralization in ores of the Gurvunur apatite-magnetite deposit (Ozerny ore cluster, Western Transbaikalia)

open access: yesРуды и металлы
The Gurvunur apatite-magnetite deposit is located within the Ozerny ore cluster in Western Transbaikalia. A peculiarity of this object is the presence of rare-earth mineralization in the ores. The main REE concentrator minerals include monazite, allanite,
Izvekova A. D.   +2 more
doaj   +1 more source

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