scholarly journals Adsorption of rare earth elements in regolith-hosted clay deposits

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Anouk M. Borst ◽  
Martin P. Smith ◽  
Adrian A. Finch ◽  
Guillaume Estrade ◽  
Cristina Villanova-de-Benavent ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Clay Deposits

scholarly journals Specific minerals in bryozoan bioherms and polychaetian limestones (Kazanthip reserve, Crimea)

2020 ◽  
Author(s):  
L. V. Leonova ◽  
◽  
A. I. Antoshkina ◽  
Yu. S. Simakova ◽  
◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Mud Volcano ◽  
Accessory Minerals ◽  
Authigenic Minerals ◽  
Reef Structure ◽  
Clay Deposits ◽  
Kerch Peninsula ◽  
Mud Volcanism ◽  
Fluid Seepage

The object of our research is the Kazantip Cape (Kerch Peninsula, Crimea). Its attraction is a ring-shaped rock massif composed of bryozoans previously considered to be a reef structure growing on the limbs of rising brachyanticline about 8 million years ago. Application of complex of investigating methods show that clay deposits underlying bryozoan structure are composed of expandable mixed-layered minerals, smectite, kaolinite, chlorite, illite with accessory minerals (zircon, monazite, ilmenite). These clays are the result of eruption of fossilized analogue of mud volcano. This process was accompanied by unloading of cold gas-fluid seepage. Specific mineralization (barite, celestine, strontianite, authigenic minerals of rare-earth elements and manganese) of bryozoan’s bioherms indicates that the seep process continued even after the waning of mud volcanism.

Flame spectra of the rare-earth elements*

1962 ◽  
Vol 18 (4) ◽  
pp. 1127-1153
Author(s):  
V FASSEL ◽  
R CURRY ◽  
R KNISELEY
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
The Rare Earth

ESTIMATION OF THE ABUNDANCE AND DISTRIBUTION OF RARE EARTH ELEMENTS IN SOIL AROUND KADUNA REFINING AND PETROCHEMICAL COMPANY USING NUCLEAR TECHNIQUE

2020 ◽  
Vol 4 (2) ◽  
pp. 599-604
Author(s):  
Michael A. Onoja ◽  
P. H. Bukar ◽  
C. U. Omeje ◽  
A. M. Adamu
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Nuclear Technique ◽  
Flood Plains ◽  
Economic Exploitation ◽  
Rare Elements ◽  
Petrochemical Company ◽  
The Moment ◽  
Abundance And Distribution ◽  
Natural Pattern

Instrumental neutron activation analysis (INAA) technique was used to investigate the abundance and distribution of rare earth elements (REE) in soil around Kaduna Refinery. The aim of the study is to assess the rare elements potential of Nigeria for economic exploitation. Five REEs (La, Dy, Eu, Yb, and Lu) were detected in varying concentrations ranging from a minimum of 0.6 µg/g (Lu) to a maximum of 249.0 µg/g (La). The elements existed with trends consistent with the natural pattern of REEs in soil, showing significant Eu and Dy anomalies which characterize upper plains and flood plains. The levels of REEs in soil in the study area were generally slightly above background levels, with minimal (La, Dy, and Eu), moderate (Yb), and significant (Lu) enrichments and trending: Lu ˃Yb ˃ Eu ˃ Dy ˃ La. The abundance of the REEs investigated cannot establish a potential of Nigeria for economic exploitation of the mineral, hence, rare earth project in the study area is not viable at the moment.

Sc, Y, La-Lu Rare Earth Elements

1986 ◽  
Author(s):  
Ingeborg Hinz ◽  
Peter Kuhn ◽  
Ursula Vetter ◽  
Eberhard Warkentin
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements

Sc, Y, La-Lu, Rare Earth Elements

1989 ◽  
Author(s):  
Hiltrud Hein ◽  
Claus Koeppel ◽  
Ursula Vetter ◽  
Eberhard Warkentin
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements
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