Results 31 to 40 of about 4,836 (216)

Dissakisite-(Ce) chemical composition: some implications for its origins [PDF]

open access: yes, 2010
Euhedral dissakisites from Trimouns dolomite mine, France, is compositionally zoned. Back-scattered electron (BSE) images reveal that each of the described dissakisite crystals has three distinct compositional zones: normal zoned core (Mg-rich ...
Hoshino Mihoko   +5 more
core   +1 more source

Cerium anomalies in lateritic profiles [PDF]

open access: yes, 1990
L'étude minéralogique et géochimique des terres rares permet de définir le comportement du cérium dans 4 profils latéritiques du ...
Bilong, P.   +5 more
core   +1 more source

ALLANITE-(Nd) FROM SAPFIRINOVAYA PIT, SOUTHERN URALS: FIRST FIND IN RUSSIA [PDF]

open access: yesМинералогия, 2019
Allanite-(Nd) (Ca1.20Mn0.02Nd0.33Ce0.21Sm0.07Pr0.06La0.03Gd0.02Y0.01)Σ1.95(Al1.94Fe2+ 0.46Fe3+ 0.42Mg0.08Sc0 .06Ti0.01)Σ2.97[Si2 O7 ][SiO4 ]O(OH) was found first in Russia as black crystals and grains up to 0.12 mm in size in a sapphirine-bearing rock of
A.V. Kasatkin, R. Škoda, A.M. Kuznetsov
doaj  

Bimodal pumice populations in the 13.5 Ma Harsány ignimbrite, Bükkalja Volcanic Field, Northern Hungary: Syn-eruptive mingling of distinct rhyolitic magma batches? [PDF]

open access: yes, 2009
The 13.5 Ma Harsány ignimbrite, in the eastern part of the Bükkalja volcanic field, eastern-central Europe, provides a rare example of mingled rhyolite.
Harangi, Szabolcs   +3 more
core   +1 more source

The Polumir granite: Addititional data on its origin [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2002
The Polumir granite is exposed on several localities due to erosion, and its chemical and mineral composition is presented in this paper. It is built of K-feldspar, plagioclase, myrmekite, metasomatic albite, biotite, muscovite and quartz, while apatite,
Vukov Milenko S., Milovanović Dragan
doaj   +1 more source

Corona formation around monazite and xenotime during greenschist-facies metamorphism and deformation [PDF]

open access: yesEuropean Journal of Mineralogy, 2020
Epidote/allanite–fluorapatite coronae around monazite and xenotime are investigated in Permian pegmatites deformed under greenschist-facies conditions during Alpine tectonometamorphism in the Austroalpine basement, Eastern Alps.
F. Hentschel   +4 more
doaj   +1 more source

The origin of secondary heavy rare earth element enrichment in carbonatites: Constraints from the evolution of the Huanglongpu district, China [PDF]

open access: yes, 2018
publisher: Elsevier articletitle: The origin of secondary heavy rare earth element enrichment in carbonatites: Constraints from the evolution of the Huanglongpu district, China journaltitle: Lithos articlelink: http://dx.doi.org/10.1016/j.lithos.2018.02 ...
Brnicky, M   +8 more
core   +3 more sources

Occurrence and behavior of monazite-(Ce) and xenotime-(Y) in detrital and saprolitic environments related to the Serra Dourada granite, Goiás/Tocantins State, Brazil: Potential for REE deposits [PDF]

open access: yes, 2015
This is the author's post-print and is released with a Creative Commons Attribution Non-Commercial No Derivatives License.The definitive published version is available from Elsevier via http://dx.doi.org/10.1016/j.gexplo.2015.03.007 © 2015 Elsevier B.V.
Botelho, NF, Santana, IV, Wall, F
core   +1 more source

Rare earth elements and yttrium minerals in altered granite-porphyry and hosting high-alumina schists in the Pellapahk Cu-Mo occurrence (Kolmozero-Voronya Belt)

open access: yesVestnik MGTU
Rare Earth Elements (REE) and yttrium phosphates monazite-(Ce) and xenotime-(Y), fluorine carbonates synchysite-(Ce) and parisite-(Ce), silicate allanite-(Ce) have been studied in the metamorphic rocks in the area of the Pellapahk Cu-Mo porphyry ...
Kalinin A. A.   +2 more
doaj   +1 more source

RöENTGENITE-(CE) AND OTHER REE FLUORCARBONATES FROM VEIN no. 35, VISHNEVYE MOUNTAINS, SOUTHERN URALS [PDF]

open access: yesМинералогия, 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   +5 more
doaj   +1 more source

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