Results 31 to 40 of about 54,225 (159)

CHARACTERIZATION OF FLUORITE FROM CINQUEVALLI BY MEANS OF MICROSCOPIC TECHNIQUES [PDF]

open access: yes, 2023
openCaratterizzazione della Fluorite di Cinquevalli mediante tecniche ...
NALESSO, DANIELE
core  

Pre-concentration of fluorite from a rare earth element carbonatite deposit through the combination of magnetic separation and leaching. [PDF]

open access: yes, 2021
Fluorspar, also known as fluorite, is commonly used as a raw material to produce fluorinated chemicals (e.g., hydrofluoric acid) or as a flux to lower the melting temperature in steel production. In the present study, a process was developed to produce a
Mercier, Guy   +11 more
core   +1 more source

Geochemistry of fluorite occurrence from Feke (Adana-Turkey) in the East Taurid Mountains [Geochemie des Fluoritvorkommens von Feke (Adana-Türkei) im Osten des Taurusgebirges]

open access: yes, 2003
A fluorite mineralization is observed within the sediment rock, having dimensions of about 60 m in length and between 0.4-2 m in thickness is found in the Feke (Adana) region.
Uras Y., Yaman S., Öner F.
core   +1 more source

Rare Earth Element Potential in the Araí Rift Metavolcanic, Central Brazil: Gamma‐Ray Signatures, Mineralogy and Exploration Implications

open access: yesTerra Nova, EarlyView.
ABSTRACT Although central Brazil hosts significant ion‐adsorption rare earth element (REE) deposits associated with A‐type granites, their coeval volcanic counterparts have been largely overlooked as exploration targets. This study demonstrates that acidic metavolcanic rocks of the Araí Group share strong radiometric, geochemical and mineralogical ...
Yuri Ribeiro   +3 more
wiley   +1 more source

Apatite as a Proxy for Reconstructing Magma Mixing Histories in Granitoids

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Apatite is a common accessory mineral in granites and mafic microgranular enclaves (MMEs), and its textural and compositional characteristics can record dynamic magmatic evolution processes. Apatites from the Early Cretaceous Sanguliu granite and its MMEs in the Liaodong Peninsula exhibit pronounced compositional heterogeneities. In this study,
Xiaowen Lin, Jiahao Zheng, Wanyi Feng
wiley   +1 more source

Structurally‐Controlled Permeability Evolution and Mineralization in Geothermal Caprocks: The Fenice Capanne Mining District (Southern Tuscany, Italy)

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The Neogene mineralized region of the Colline Metallifere in southern Tuscany (Italy) provides a natural laboratory to investigate feedback between fluid–rock interaction, structurally controlled fluid flow, and hydrothermal ore mineralization.
Barbara Marchesini   +12 more
wiley   +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

Granite-Hosted Fluorite–Barite Veins at Jbel Merguechoum (Northeastern Morocco): Paragenesis, Trace-Elements and REE Geochemistry, and Constraints on the Origin of Green and Purple Coloration

open access: yesGeosciences
The Jbel Merguechoum fluorite–barite deposit in northeastern Morocco is a granite-hosted fluorite–barite vein-type deposit whose trace and rare-earth element (REE) geochemistry, role of structural defects and trace elements in fluorite coloration, and ...
Mohammed Cherai   +3 more
doaj   +1 more source

DAMP Laden Extracellular Vesicles From the Airways of Patients With Severe SARS‐CoV‐2 Respiratory Infection Compromise Inflammation and Cellular Metabolism

open access: yesJournal of Extracellular Vesicles, Volume 15, Issue 6, June 2026.
Extracellular vesicles from severe COVID‐19 airways carry depleted miRNAs and elevated DAMPs, reprogramming monocytes toward senescence, impaired metabolism, and predominantly reduced cytokine responses. However, they drive excess IL‐8 production, amplifying neutrophil recruitment and dysfunctional inflammation across the respiratory tract.
April Rees   +14 more
wiley   +1 more source

RELICTS OF FLUORIDE-CALCIUM (FLUORITIC) AND SALT MELTS IN ROCKS OF THE ARY-BULAK MASSIF (EAST TRANSBAIKALIA)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2021
The relevance of the study of ongonites, which are subvolcanic analogs of rare-metal Li-F granites, is caused by obtaining new data on petrology and geochemistry of F and rare elements enriched with felsitic igneous rocks.
Anna S. Dmitrieva   +2 more
doaj   +1 more source

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