Results 71 to 80 of about 1,895 (220)

REE-bearing minerals in the Rapakavi Grante, Southern Finland

Open Geosciences, 2015
The studied rock samples belong to the classic1615–1645 Ma Wiborg Rapakivi granite terrane of southeasternFinland. Geochemical studies show that the rapakivigranites and associated rocks form metaluminousto peraluminous A-type granites and plot in the ...
Al-Ani Thair
doaj   +1 more source

Rapid magma ascent and formation of the Águas Belas-Canindé granitic batholith, NE Brazil: evidence of epidote dissolution and thermobarometry

Brazilian Journal of Geology, 2020
Mineral chemistry and intensive parameter estimates for the Major Isidoro (626 Ma) and Monteirópolis (627 Ma) magmatic epidote-bearing granitic plutons, emplaced along the Jacaré dos Homens transpressional shear zone (JHSZ), Borborema Province, are ...
Thyego Roberto da Silva, Valderez Pinto Ferreira, Mariucha Maria Correia de Lima, Alcides Nóbrega Sial   +3 more
doaj   +1 more source

Occurrence and Geochemistry of REE Minerals From the Western Part of the Lugiin Gol Carbonatite Deposit, Southeast Mongolia

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, Sang‐Mo Koh, Otgon‐Erdene Davaasuren, Naidansuren Tungalag, Bum Han Lee, Sodnom Oyungerel   +5 more
wiley   +1 more source

Characterising the U–Th–Pb systematics of allanite by ID and LA-ICPMS: Implications for geochronology

, 2014
Allanite has the potential to be a useful chronometer of crustal evolution, forming in response to a wide spectrum of metamorphic and magmatic conditions and incorporating weight-percent concentrations of LREE, Th and U.
Roberts, Nick M.W., Horstwood, Matthew S.A., Parrish, Randall R., Condon, Daniel J., Smye, Andrew J.   +4 more
core   +1 more source

Determination of surface chemistry and flotation properties of rare earth mineral allanite

, 2021
In this study, flotation properties of allanite, a sorosilicate rare earth mineral that commonly found in some new complex ore reserves, was studied with EDA (CH3-(CH2)(9)-O-(CH2)(3)-NH2/ethylenediamine), a commercial cationic collector in the etheramine
Kursun, Ilgin, Terzi, Mert, Ozdemir, Orhan   +2 more
core   +1 more source

Allanite in Mantle Eclogite Xenoliths

Journal of Petrology
Abstract Rare-Earth Elements (REE) are key geochemical tracers of crust–mantle differentiation, but there are few direct data on REE-rich minerals in mantle rocks. Here, we report the combined petrography and comprehensive chemical and isotopic characterization of three coesite- and kyanite-bearing eclogite xenoliths from the Udachnaya ...
Denis S Mikhailenko, Sonja Aulbach, Aleksandr S Stepanov, Andrey V Korsakov, Le Zhang, Yi-Gang Xu   +5 more
openaire   +1 more source

Ueber den Allanit von Iglorsoit [PDF]

Archiv der Pharmazie
n ...
Hofrath,, Stromeyer,
openaire   +2 more sources

Gold Mineralizing Potential of the Late Triassic Calcareous, Carbonaceous and Sulfide‐Rich Sedimentary Rocks of the Isatomae Formation in the South Kitakami Belt, Japan

Resource Geology, Volume 76, Issue 1, January/December 2026.
Isatomae Formation illustrating mineralogical and geochemical characteristics. (a) Overview of the Isatomae Formation, showing the marine anoxic environment and related biogenic processes. (b) Deposition of metal‐rich Fe oxyhydroxides were transformed into sulfides through diagenesis and low grade metamorphism.
June Born Born, Yasushi Watanabe, Takuya Echigo, Yoshiaki Kon, Takumi Mimura   +4 more
wiley   +1 more source

CONCENTRIC-ZONAL AGGREGATE OF REE MINERALS IN FELDSPAR PEGMATITE OF THE VISHNEVYE MOUNTAINS, SOUTH URALS [PDF]

Минералогия, 2019
A concentric-zonal texture of mineral aggregate observed in alkali pegmatite of the Vishnevye Mountains was formed as a result of melt-fluid crystallization in a closed system.
V.A. Popov
doaj  

Allanite occurrences in Westland, New Zealand (Note) [PDF]

New Zealand Journal of Geology and Geophysics, 1985
Abstract Allanite occurs widely as an accessory mineral in granitoid rocks from Westland, New Zealand, and is particularly characteristic of tonalites. It is rare in metamorphic rocks. Microprobe analyses show a fair uniformity in composition; the range of rare earth concentrations (weight percent) is La
openaire   +1 more source