Edahbi, M Plante, B Benzaazoua, M Cayer, A
Published in
IOP Conference Series: Earth and Environmental Science
Drainage water quality is the significant environmental concern for the rare earth elements (REE) mining industry. REE deposits are associated with other metals and radioactive bearing minerals. REE mining and refining activities can generate significant quantities of liquid and solid wastes. Therefore, a long-term integrated approach covering the ...
Lundstrom, Craig C. Hervig, Rick Fischer, Tobias P. Sivaguru, Mayandi Yin, Leilei Zhou, Zhenhao Lin, Xiaobao Grossi-Diniz, Rodrigo
Published in
Frontiers in Earth Science
Ol Doinyo Lengai (ODL, Tanzania, East African Rift) is the only known volcano currently erupting carbonatite on Earth with 30 yr. cycles alternating between quiescent carbonatite effusion and explosive, compositionally-zoned silicate eruptions. We performed isothermal crystallization and thermal gradient experiments involving ODL nephelinite, Na2CO...
Buikin, A. I. Hopp, J. Verchovsky, A. B. Kogarko, L. N. Trieloff, M.
Published in
Petrology
AbstractHere we present summarizing of isotopic compositions and element ratios of noble gases, nitrogen, carbon and hydrogen in carbonatites of different generations of the Guli massif (West Siberia, Russia) obtained by stepwise crushing. The data point to the subcontinental lithospheric mantle (SCLM) as a primary source of the fluid phase in Guli...
Sharkov, E. V. Chistyakov, A. V. Bogina, M. M. Shchiptsov, V. V. Belyatsky, B. V. Frolov, P. V.
Published in
Petrology
The paper reports first comprehensive geological, petrographic, mineralogical, and geochemical data on one of the world’s oldest Tiksheozero ultramafic‒alkaline‒carbonatite complex (~1.99 Ga), which belongs to the Mid-Paleoproterozoic igneous province of the Baltic Shield. The complex was formed in three intrusive phases. The first phase is compose...
Lapin, A. V. Kulikova, I. M. Nabelkin, O. A.
Published in
Lithology and Mineral Resources
AbstractA comparative analysis of the composition and structure of the surface facies of carbonatite weathering crusts (profiles) in the Chuktukon (Russia) and Seis Lagos (Brazil) deposits and ultra-rich rare metal ores in the Tomtor deposit (Russia) is presented. It is shown that the main geochemical trends in the formation of the Tomtor-type ultr...
Savko, K. A. Tsybulyaev, S. V. Samsonov, A. V. Bazikov, N. S. Korish, E. H. Terentiev, R. A. Panevin, V. V.
Published in
Doklady Earth Sciences
AbstractNeoarchean intraplate granitoid (2.61 Ga) and carbonatite magmatism are established in the Kursk block of Sarmatia in close spatial association. Alkaline pyroxenites, carbonatites, and syenites of the Dubravinskii complex are represented by two relatively large intrusions and a few small plutons. They underwent amphibolite facies metamorphi...
Dobretsov, N. L. Zhmodik, S. M. Lazareva, E. V. Bryanskaya, A. V. Ponomarchuk, V. A. Saryg-ool, B. Yu. Kirichenko, I. S. Tolstov, A. V. Karmanov, N. S.
Published in
Doklady Earth Sciences
AbstractData indicating the important role of microorganisms in the redistribution of REEs in the weathering crust and the decisive role in the concentration of REEs during the formation of ores in the upper ore horizon of the Tomtor field are obtained. The uptake of REEs was carried out by the community of microorganisms, such as phototrophs, meth...
Frejd, Julia
Niobium (Nb) and Rare Earth Elements (REE’s) have in recent years received considerable attention because of their importance to the modern technical industry, and more specifically the enhanced sustainability that comes with them. The main source for Nb and REE’s on Earth are carbonatites and associated alkaline silicate rocks. This report examine...
Petrovskii, M. N.
Published in
Geology of Ore Deposits
Abstract—This paper presents the results of the first geological, isotope, geochemical, and mineralogical study of carbonatite veins that were previously unknown in the Soustov pluton. The studied veins are similar in the Sm–Nd isotope composition and model age to the host rocks, which implies a common formation processs. High contents of light lan...
Dobretsov, N. L. Lazareva, E. V. Zhmodik, S. M. Ponomarchuk, V. A. Travin, A. V. Myagkaya, I. N. Tolstov, A. V. Karmanov, N. S.
Published in
Doklady Earth Sciences
AbstractAmong the rich REE–Nb ores of the upper ore horizon of the Tomtor deposit, under the Jurassic deposits (borehole 324, interval 47–62 m), ultrapotassiс rocks (feldspar porphyrite), consisting of more than 90% potassium feldspar (K-feldspar), are found. The rocks contain titanium–niobium oxide and rare grains of fersmite, Ce-bastnaesite, Ce-m...