Origin and evolution of the Ilmeny–Vishnevogorsky carbonatites (Urals, Russia): insights from trace-element compositions, and Rb-Sr, Sm-Nd, U-Pb, Lu-Hf isotope data

Nedosekova, I. L.; Белоусова, Е. А.; Sharygin, Victor V.; Belyatsky, B. V.; Bayanova, T. B.

doi:10.1007/s00710-012-0223-9

Cited by 18 publications

(2 citation statements)

References 49 publications

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“…Nepheline is an unusual and rare mineral in classic carbonatite complexes world-wide. Nevertheless nepheline-bearing carbonatites have been reported from a number of carbonatite localities; e.g., Laacher See, Germany and Alnø, Sweden (both mentioned in [34]), Fen [35] and Lillebukt [36] in Norway, Chilwa Island and Kangankunde, Malawi [37], Budeda Hill and Homa Bay, Uganda [38,39], Walloway, Australia [40], Dicker Willem, Namibia [41], and in Ilmeny-Vishnevogorsky, Urals, Russia [42] and from other Russian occurrences (summarized by [43]. In addition, other carbonatites contain natrolite, analcime or cancrinite, formed by breakdown of nepheline; e.g., Oka, Canada [44]; Legetet Hills, Kenya, Nachendezwaya, Tanzania, Tororo and Bukusu, Uganda (all summarized by [34]).…”

Section: Petrographical Classification Of the Breivkbotn Carbonatite mentioning

confidence: 99%

Mineralogical and Geochemical Constraints on Magma Evolution and Late-Stage Crystallization History of the Breivikbotn Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite Complexes

et al. 2018

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The present work reports on new mineralogical and whole-rock geochemical data from the Breivikbotn silicocarbonatite (Seiland igneous province, North Norway), allowing conclusions to be drawn concerning its origin and the role of late fluid alteration. The rock shows a rare mineral association: calcite + pyroxene + amphibole + zeolite group minerals + garnet + titanite, with apatite, allanite, magnetite and zircon as minor and accessory minerals, and it is classified as silicocarbonatite. Calcite, titanite and pyroxene (Di36–46 Acm22–37 Hd14–21) are primarily magmatic minerals. Amphibole of mainly hastingsitic composition has formed after pyroxene at a late-magmatic stage. Zeolite group minerals (natrolite, gonnardite, Sr-rich thomsonite-(Ca)) were formed during hydrothermal alteration of primary nepheline by fluids/solutions with high Si-Al-Ca activities. Poikilitic garnet (Ti-bearing andradite) has inclusions of all primary minerals, amphibole and zeolites, and presumably crystallized metasomatically during a late metamorphic event (Caledonian orogeny). Whole-rock chemical compositions of the silicocarbonatite differs from the global average of calciocarbonatites by elevated silica, aluminium, sodium and iron, but show comparable contents of trace elements (REE, Sr, Ba). Trace element distributions and abundances indicate within-plate tectonic setting of the carbonatite. The spatial proximity of carbonatite and alkaline ultramafic rock (melteigite), the presence of “primary nepheline” in carbonatite together with the trace element distributions indicate that the carbonatite was derived by crystal fractionation of a parental carbonated foidite magma. The main prerequisites for the extensive formation of zeolite group minerals in silicocarbonatite are revealed.

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Section: Petrographical Classification Of the Breivkbotn Carbonatite mentioning

confidence: 99%

Mineralogical and Geochemical Constraints on Magma Evolution and Late-Stage Crystallization History of the Breivikbotn Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite Complexes

et al. 2018

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“…Nevertheless nepheline-bearing carbonatites have been reported from a number of carbonatite localities; e.g. Laacher See, Germany and Alnø, Sweden (both mentioned in [34]), Fen [35] and Lillebukt [36] in Norway, Chilwa Island and Kangankunde, Malawi [37], Budeda Hill and Homa Bay, Uganda [38,39], Walloway, Australia [40], Dicker Willem, Namibia [41], and in Ilmeny-Vishnevogorsky, Urals, Russia [42] and from other Russian [32] is dotted and is shown for reference. Primordial mantle compositions used are taken from [30].…”

Section: Petrographical Classification Of the Breivkbotn Carbonatite mentioning

confidence: 99%

Mineralogical and Geochemical Constraints on the Origin and Late-Stage Crystallization History of the Breivikbotn Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite Complexes

Zozulya¹,

Kullerud²,

Ravna³

et al. 2018

Preprint

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The present work reports new mineralogical and whole rock geochemical data from the Breivikbotn silicocarbonatite (Seiland igneous province, North Norway), allowing conclusions to be drawn concerning its origin and the role of late fluid alteration. The rock shows a rare mineral association: calcite + pyroxene + amphibole + zeolite group minerals + garnet + titanite, with apatite, allanite, magnetite and zircon as minor and accessory minerals, and it is classified as silicocarbonatite. Calcite, titanite and pyroxene (Di36-46 Acm22-37 Hd14-21) are primarily magmatic minerals. Amphibole of hastingsitic composition has formed after pyroxene at a late-magmatic stage. Zeolite group minerals (natrolite, gonnardite, Sr-rich thomsonite-(Ca)) were formed during hydrothermal alteration of primary nepheline by fluids/solutions with high Si-Al-Ca activities. Poikilitic garnet (Ti-bearing andradite) has inclusions of all primary minerals, amphibole and zeolites, and presumably crystallized metasomatically during a late metamorphic event (Caledonian orogeny). Whole rock chemical compositions of the silicocarbonatite differs from the global average of calciocarbonatites by elevated silica, aluminium, sodium and iron, but show comparable contents of trace elements (REE, Sr, Ba). Trace element distributions indicate within-plate tectonic setting of the carbonatite. The spatial proximity of carbonatite and alkaline ultramafic rock (melteigite), the presence of “primary nepheline” in carbonatite together with the trace element distributions indicate that the carbonatite was derived from crystal fractionation of a parental carbonated foidite magma. The main prerequisites for the extensive formation of zeolite group minerals in silicocarbonatite are revealed.

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Geology and ore deposits of the Urals

2013

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The Urals is a N-S trending mountain range forming the geographic boundary between Europe and Asia. It represents a 2000 km long Paleozoic orogen, extending from the Islands of Novaya Zemlya in the north to the Aral Sea in the south. For a long time the information about Uralian geology was very scarce in the international literature. A significant breakthrough took place at the end of 20th century when the EUROPROBE and GEODE international projects started. In the frame of these projects, several seismic cross sections trough the Urals, together with detailed geological investigations, were carried out. The main results of these studies were published in a special Issue of Tectonophysics (1997) and in the Geophysical Monograph 132 "Mountain Building in the Uralides: Pangea to the Present" published by American Geophysical Union (AGU) in 2002 and in numerous other papers. In the last decade a lot of new mineralogical, petrological and geochemical data, particularly in isotope geochemistry and geochronology, were gathered. These new data represents the base for the need for a further look onto Uralian geology. This special issue of Mineralogy & Petrology contains a profound collections of new data, interpretations and discussional aspects on Uralian geology since 2002.The Urals belongs to the western flank of the huge transcontinental Uralo-Mongolian fold belt and comprises at least three billion years of geological history. Today we can distinguish between five major structural levels and epochs of the Urals development (see Puchkov 2013). The earliest Archean and later Meso-Neoproterozoic complexes, although related to the development of the Baltic craton and its eastern periphery, far before the Uralides existed, are incorporated in the Uralian orogen structure and sometimes they display traces of young Paleozoic events of the fold belt. The Archean rocks are represented by granulites of the Taratash complex, showing similarities to the granulites in the basement of the East-European platform. The MesoNeoproterozoic sedimentary and magmatic complexes witness the geotectonic development along the eastern margin of the Baltic Shield. This time was very productive regarding the formation of some important mineral deposits, such as siderite and magnesite within metasedimentary sequences (Prochaska and Krupenin 2012) and titano-magnetite ore associated with rift-related layered gabbro intrusions and others.The Paleozoic-Lower Jurassic period of time may be considered as the main stage of the development of the Uralides, covering a complete Wilson cycle: starting from the rifting of the Baltic continent after the Timanian orogeny, through formation of an oceanic basin, a passive continental margin and microcontinental blocks, to subduction, accompanied by a significant amount of volcanic eruptions, then arc-continent collision, continent-continent collision with granite magmatism, formation of a long chain of batholiths, and finally post-collisional extension with floodbasalt magmatism. The most important and famo...

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Origin and evolution of the Ilmeny–Vishnevogorsky carbonatites (Urals, Russia): insights from trace-element compositions, and Rb-Sr, Sm-Nd, U-Pb, Lu-Hf isotope data

Cited by 18 publications

References 49 publications

Mineralogical and Geochemical Constraints on Magma Evolution and Late-Stage Crystallization History of the Breivikbotn Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite Complexes

Mineralogical and Geochemical Constraints on Magma Evolution and Late-Stage Crystallization History of the Breivikbotn Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite Complexes

Mineralogical and Geochemical Constraints on the Origin and Late-Stage Crystallization History of the Breivikbotn Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite Complexes

Geology and ore deposits of the Urals

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