Results 31 to 40 of about 54,225 (159)
CHARACTERIZATION OF FLUORITE FROM CINQUEVALLI BY MEANS OF MICROSCOPIC TECHNIQUES [PDF]
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]
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
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
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
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
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]
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
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
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
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

