Concentrations and behavior of rare earth elements in mud volcanic waters

Author(s):  
Alexey Sobisevich ◽  
Valery Ershov ◽  
Evgeniy Elovskiy ◽  
Elnur Baloglanov ◽  
Irina Puzich

<p></p><p> <span>REEs concentrations in mud volcanic waters were normalized to RPSC (Russian Platform of Shale Composite).</span> <sub></sub><span>On the Yuzhno-Sakhalinsky mud volcano (Sakhalin Island, Russia), along with the sampling for analysis of REEs concentrations, hydrogeochemical monitoring was also conducted.</span> </p>

2006 ◽  
Vol 985 ◽  
Author(s):  
Timothy E Payne ◽  
Reto Giere ◽  
Kaye P Hart ◽  
Gregory R Lumpkin ◽  
Peter J McGlinn

AbstractChemical extraction techniques and scanning electron microscopy were used to study the distribution and behavior of actinides and rare earth elements (REE) in hydrothermal veins at Adamello, (Italy). The six samples discussed in this paper were from the phlogopite zone, which is one of the major vein zones. The samples were similar in their bulk chemical composition, mineralogy, and leaching behavior of major elements (determined by extraction with 9M HCl). However, there were major differences in the extractability of REE and actinides. The most significant influence on the leaching characteristics appears to be the amounts of U, Th and REE incorporated in resistant host phases. Uranium and Th are very highly enriched in zirconolite grains. Actinides were more readily leached from samples with a higher content of U and Th, relative to the amount of zirconolite. The results show that REE and actinides present in chemically resistant minerals can be retained under aggressive leaching conditions.


2015 ◽  
Vol 48 (10) ◽  
pp. 1090-1100 ◽  
Author(s):  
Yu. N. Vodyanitskii ◽  
D. V. Manakhov ◽  
A. T. Savichev

2020 ◽  
Author(s):  
L. V. Leonova ◽  
◽  
A. I. Antoshkina ◽  
Yu. S. Simakova ◽  
◽  
...  

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.


2019 ◽  
Vol 652 ◽  
pp. 869-879 ◽  
Author(s):  
Lina Carvalho ◽  
Rui Monteiro ◽  
Paula Figueira ◽  
Cláudia Mieiro ◽  
Eduarda Pereira ◽  
...  

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