Results 21 to 30 of about 54,225 (159)

Expanded Continuous Test for Comprehensive Utilization of a Rare Earth and Associated Fluorite Resources in Henan

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. In this paper, a rare earth and associated fluorite resource in Henan Province was studied.
Zheng Zhou   +5 more
doaj   +1 more source

Petrology and mineralogy of the Ulaan Del Zr-Nb-REE deposit, Lake Zone, Western Mongolia

open access: yesMongolian Geoscientist, 2020
The Ulaan Del deposit is located in the Lake Zone, Western Mongolia. In the area, middle-late Devonian alkali dykes of the Khalzan Complex are hosted in the middle-late Cambrian granodiorite-tonalite of the Togthohiinshil Complex. The alkali dykes of the
Sanjsuren Oyunbat
doaj   +1 more source

REE Speciation in Fluoride-Carbonate-Chloride Cooling Hydrothermal Fluids in the Presence of Barite and Celestine (Thermodynamic Modeling)

open access: yesRussian Journal of Earth Sciences, 2023
A thermodynamic study was carried out in order to determine the forms of transport for the entire series of lanthanides and their ratio with changing parameters of a hydrothermal fluid of moderate concentrations of chloride, carbonate and fluoride ...
Shironosova Galina, Prokopyev Ilya
doaj   +1 more source

Coefficients of distribution of REE+Y between minerals and cooling rich sulfate fluid (thermodynamic modeling)

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2018
The relevance of the work is caused by the fact that the study of the coefficients of REE+Y distribution between the minerals-concentrators of these elements and between minerals and sulfate fluids in various alkaline and weakly acidic systems makes it ...
Galina Petrovna Shironosova   +1 more
doaj   +1 more source

Application of lanthanides tetrad effect as a geochemical indicator to identify fluorite generations: A case study from the Laal-Kan fluorite deposit, NW Iran

open access: yesComptes Rendus. Géoscience, 2020
The Laal-Kan fluorite deposit situated in north margin of the Sanandaj-Sirjan metamorphic belt and Urmia-Dokhtar magmatic arc, NW Iran. The fluorite mineralization in the form of open-space filling, veins and veinlets have been deposited in the contact ...
Rezaei Azizi, Mansour   +2 more
doaj   +1 more source

Phenocrystic fluorite in peralkaline rhyolites, Olkaria, Kenya Rift Valley.

open access: yes, 1998
The first occurrence of phenocrystic fluorite in a peralkaline rhyolite is reported from Quaternary lavas (agpaitic index 1.11-1.37) erupted from the Greater Olkaria Volcanic Complex, Kenya. Fluorite compositions are almost stoichiometric, with 0.65-1.49
MacDonald, Raymond   +5 more
core   +3 more sources

Genetic Relationship between Granite and Fluorite Mineralization in the Shuanghuajiang Fluorite Deposit, Northern Guangxi, South China: Evidence from Geochronology, REE, and Fluid Geochemistry

open access: yes, 2022
Hydrothermal vein-type fluorite deposits are the most important metallogenic type of fluorite deposits in South China, most of which are closely related to granitoid in space; however, the genetic relationship between granitoid and fluorite ...
Gen Li   +5 more
core   +1 more source

The role of carbonate-fluoride melt immiscibility in shallow REE deposit evolution [PDF]

open access: yes, 2018
The Lugiin Gol nepheline syenite intrusion, Mongolia, hosts a range of carbonatite dikes mineralized in rare-earth elements (REE). Both carbonatites and nepheline syenite-fluoritecalcite veinlets are host to a previously unreported macroscale texture ...
Galiova, Michaela   +15 more
core   +1 more source

Geochemistry of fluorite occurrence from Feke (Adana-Turkey) in the East Taurid Mountains

open access: yes, 2003
WOS: 000183262100003A 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, Oner, F, Yaman, S
core   +1 more source

Fluorite Mineralization Related to Carbonatitic Magmatism in the Western Transbaikalia: Insights from Fluid Inclusions and Trace Element Composition

open access: yes, 2021
Fluorite mineralization associated with different types of magmatism is common in the Western Transbaikalia. This study deals with Arshan, Yuzhnoe, and Ulan-Ude fluorite occurrences, which are the most significant examples of carbonatite-related fluorite
Ilya V. Veksler   +3 more
core   +1 more source

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