Role of fluid in the genesis of carbonatites and alkaline rocks: Geochemical evidence

Rass, I. T.; Abramov, S. K.; Utenkov, V. A.; Kozlovskii, V. M.; Korpechkov, D. I.

doi:10.1134/s0016702906070020

Cited by 10 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Antiperthite miaskite of the Central alkaline tract contains 1.45-6.2 wt % K 2 O and 7.5-10.5 wt % Na 2 O; PI = 0.94-0.95. In addition, antiperthite miaskite is enriched in P and Ba and depleted in Mn, Rb, and Nb relative to miaskite from the Vishnevogorsky pluton (Rass et al, 2006). It should be noted that the root zone of the Vishnevogorsky pluton is enriched in Ba as well ( Table 1).…”

Section: Geochemistry Of Rocksmentioning

confidence: 94%

The Il’mensky-Vishnevogorsky miaskite-carbonatite complex, the Urals, Russia: Origin, ore resource potential, and sources

et al. 2009

View full text Add to dashboard Cite

followed in the mid-20th century by E.M. Bonstedt-Kupletskaya, E.S. Il'menev, I.G. Isakov, A.G. Zhabin, E.M. Es'kova, N.V. Svyazhin, B.M. Ronenson, V.Ya. Levin, A.G. Bazhenov, V.O. Polyakov, V.A. Popov, V.A. Popova, V.A. Kononova, I.V. Chernyshev, V.S. Samoilov, A.S. Talantsev, and others.In the 1940s, a geological exploration expedition headed by Isakov discovered endogenetic carbonate veins with pyrochlore mineralization and Zone 140 of the Vishnevogorsky niobium deposit, related to pyrochlore-bearing carbonatite. The mining operations at Abstract -The origin and sources of the Il'mensky-Vishnevogorsky miaskite-carbonatite complex, one of the world's largest alkaline complexes, with unique rare-metal and colored-stone mineralization and Nb, Zr, and REE deposits, are discussed in this paper. Geochemical and isotopic studies, including of Nd, Sr, C, and O isotopes, as well as estimation of PT formation conditions, of miaskites and carbonatites from various deposits of the Il'mensky-Vishnevogorsky Complex have been carried out. The Vishnevogorsky, Potaninsky, and Buldym Nb-REE deposits and the Il'mensky, Baidashevo, and Uvil'dy occurrences related to carbonatites were investigated. Their geological setting, composition, and ore resource potential are characterized. The genetic models and typical features of the Il'mensky-Vishnevogorsky Complex are considered. The rocks of the Il'menskyVishnevogorsky Complex were formed at T = 1000-230 ° C and P = 2-5 kbar. Carbonated miaskite melt was divided into immiscible silicate and carbonate liquids at T = 1000 ° C and P = 5 kbar. Miaskite crystallized at T = 850-700 ° C and P = 3.5-2.5 kbar. The formation temperature of carbonatite I of the Vishnevogorsky pluton was close to the temperature of miaskite crystallization (700-900 ° C). The crystallization temperature of carbonate-silicate rock and carbonatite I in the Central alkaline tract was 650-600 ° C. The formation temperature of carbonatite II varied from 590 to 490 ° C. Dolomite-calcite carbonatite III and dolomite carbonatite IV of the Buldym massif were formed at T = 575-410 ° C and T = 315-230 ° C, respectively. The geochemical features of carbonatites belonging to the Il'mensky-Vishnevogorsky Complex differ from those of carbonatites related to alkaline ultramafic rocks and are close to those of carbonatites related to nepheline syenite or carbonatites localized in linear fracture zones. A high Sr content in early carbonatites along with relatively low Ba, Nb, Ta, Ti, Zr, and Hf contents and a certain enrichment in HREE (a low La/Yb ratio) in comparison with carbonatites of the alkaline ultramafic association are typical. The geochemistry of carbonatites of the Il'mensky-Vishnevogorsky Complex corresponds to the trend of geochemical evolution of carbonatitic melts and their fluid derivatives. The Sr, Nd, C, and O isotopic compositions indicate a mantle magmatic source of the Il'mensky-Vishnevogorsky Complex and participation of moderately depleted mantle (DM) and enriched mantle EM1 in magma generation. Carbonatite...

show abstract

Section: Geochemistry Of Rocksmentioning

confidence: 94%

The Il’mensky-Vishnevogorsky miaskite-carbonatite complex, the Urals, Russia: Origin, ore resource potential, and sources

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Features of their behavior in various rocks, along with isotopic ratios, are applied to resolve diverse problems concerning magma sources, magma fractionation and mixing, separation of fluids, and their role in mobilization and transport of ore components. REE behavior is studied in magmatic processes most thoroughly in terms of REE partitioning between melt, fluid, and crystallizing phases (Zharikov et al, 1993;Rass et al, 2006). The REE distribution in aqueous media and hydrothermal systems, including the partitioning between minerals and hydrothermal solution, is studied to a lesser extent.…”

Section: Introductionmentioning

confidence: 99%

“…(1) Tourmaline granite, (2) granite, (3) tourmalinite replacing granite,(4,5) tourmaline schlieren in granite, (6) monzodiorite, (7) quartz-feldspar vein, (8) plagioclase-tremolite rock, (9) metamorphic rock, (10) quartz-cassiterite-tourmaline vein, (11) quartz-siderophyllite greisen, (12) quartz-feldspar greisen, (13) albite-tourmaline zone in granite,(14) quartz-tourmaline-muscovite greisen, (15) tourmaline metasomatic rock,(16) quartz-tourmaline metasomatic rock, (17) quartz-sulfide vein, (18) quartz-tourmaline vein with cassiterite,(19) pegmatite,(20)(21)(22) quartz-cassiterite-tourmaline vein, (23) quartz-muscovite greisen,(24,25) rare-metal pegmatite, (26) veinlets of Ca-rich dravite in limestone.…”

mentioning

confidence: 99%

Rare earth elements in tourmaline and chlorite from tin-bearing assemblages: Factors controlling fractionation of REE in hydrothermal systems

et al. 2008

View full text Add to dashboard Cite

The REE distribution in minerals from tin-bearing ore-magmatic systems of the Russian Far East, including the Komsomolsk, Khingan, and Badzhal districts in the Amur region and the Kavalerovo, Lesozavodsk, Voznesenka, Furmanovo, and other districts in Primorsky krai, has been studied. The main attention was focused on tourmaline and chlorite; in addition, associated biotite, feldspar, apatite, fluorite, and carbonates were examined. The major factors affecting the REE distribution in the studied minerals are the temperature, Eh, and pH of the mineral-forming medium; crystal chemistry; partition coefficients of REE between fluid and minerals; and complexation that disturbs the coherent behavior of REE. Fluid evolution at different stages is characterized.

show abstract

“…Так как породы линейных карбонатитовых комплексов деформированны, предполагается, что они являются рифтогенными комплексами, которые были вовлечены в зону коллизии [Burke et al, 2003]; альтернативная гипотеза их происхождения -генерация и внедрение щелочных и карбонатитовых магм на орогенном этапе становления складчатых областей [Attoh et al, 2007]. Происхождение ИВК и геодинамические обстановки его формирования также остаются предметом дискуссий [Ronenson, 1966;Kononova et al, 1979;Kramm et al, 1983;Levin et al, 1997;Mitchell, 2005;Rass et al, 2006;Rusin et al, 2006;Ivanov, 2011;Abramov et al, 2020].…”

Section: Introductionunclassified

AGE AND GEODYNAMIC SETTINGS OF MIASKITE-PEGMATITES, CARBONATITES, AND Nb-Zr MINERALIZATION OF THE ILMENO-VISHNEVOGORSKY ALKALINE COMPLEX, SOUTH URAL (U-Pb AND Rb-Sr ISOTOPE DATA)

Nedosekova

Chervyakovsky

Chervyakovskaya

et al. 2022

Geodin. tektonofiz.

View full text Add to dashboard Cite

The Ilmeno-Vishnevogorsky miaskite-phenite-carbonatite complex (IVС), located in the Urals folded region, is a representative of "linear type" carbonatite complexes, with which Nb-Zr deposits are associated. The ore potential of linear carbonatite complexes, the time and duration of ore-forming processes, and the geodynamic setting remain the subject of discussion. In order to estimate the age and duration of ore formation processes in the IVC, the U-Pb dating of zircon (LA-ICP-MS) from miaskite-pegmatites, as well as Rb-Sr dating of ore-bearing (pyrochlore-bearing) varieties of miaskite-pegmatites and carbonatites (ID-TIMS) were carried out. The U-Pb dating of zircon from the IVC miaskite-pegmatites showed the Permian age (280±8 Ma, P1 – age of the main zircon generation). The Rb-Sr-mineral isochron of miaskite-pegmatite showed a close age of 274±5 Ma (P1), confirming the results of U-Pb-dating of miaskite-pegmatites. The Rb-Sr dating of pyrochlore carbonatite varieties (sovites II) showed an age of 250±3 Ma (T1). The results of Rb-Sr- and U-Pb dating indicate that the processes of pegmatite- and carbonatite formation and the associated Zr-Nb ore formation in IVC occurred at the late collisional and postcollisional stage of development of the Ural folded region. Based on the data obtained, the geodynamic model for the IVC formation was proposed.

show abstract

Role of fluid in the genesis of carbonatites and alkaline rocks: Geochemical evidence

Cited by 10 publications

References 27 publications

The Il’mensky-Vishnevogorsky miaskite-carbonatite complex, the Urals, Russia: Origin, ore resource potential, and sources

The Il’mensky-Vishnevogorsky miaskite-carbonatite complex, the Urals, Russia: Origin, ore resource potential, and sources

Rare earth elements in tourmaline and chlorite from tin-bearing assemblages: Factors controlling fractionation of REE in hydrothermal systems

AGE AND GEODYNAMIC SETTINGS OF MIASKITE-PEGMATITES, CARBONATITES, AND Nb-Zr MINERALIZATION OF THE ILMENO-VISHNEVOGORSKY ALKALINE COMPLEX, SOUTH URAL (U-Pb AND Rb-Sr ISOTOPE DATA)

Contact Info

Product

Resources

About