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Keivy Complex

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Back-scattered electron (BSE) images of CGMs from the <span class="search-highlight">Keivy</span> <span class="search-highlight">complex</span>. ( a ) ...
Published: 01 June 2012
F ig . 5. Back-scattered electron (BSE) images of CGMs from the Keivy complex. ( a ) Fractured CGM (chv) mantled by thin rim of darker material which we interpret as a result of hydrothermal alteration (sample 1/93); ( b ) fractured CGMs replaced marginally and along cracks by hydrothermally
Image
A  REE vs . (Ca + Sr) plot to show the Ca-poor (&lt;0.2 a.p.f.u.) nature of...
Published: 01 June 2012
/62 and Pb-176 are from the Keivy complex, Kola; K1, Mushugai-Khuduk complex, Mongolia; K2, polyakovite, Urals; K3, Khibiny massif, Kola; K4, Vishnevye mountains, Urals; K6, K7, K8, K9, K10, Khaldzan-Buragtag massif, Mongolia. Averages and the full dataset are in Supplementary Table 1.
Series: GSA Special Papers
Published: 01 May 2015
DOI: 10.1130/2015.2510(03)
... Central Kola complex, and the Keivy volcanotectonic paleodepression. Sanukitoid intrusions play a modest role. The Keivy volcanotectonic paleodepression is situated in the eastern Kola Peninsula. Rocks of this tectonic unit are peculiar, and many of them have no obvious analogs in the Fennoscandian Shield...
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Simplified geological map of the El’ozero rare-metal deposit, Kola Peninsul...
Published: 01 November 2016
, amphibole–biotite gneiss of the Keivy Terrane; 7, granite gneiss of the TTG basement (Central Kola Composite Terrane); 8, main faults. The insert shows the location and structure of the Keivy peralkaline granite complex. (online version in colour)
Image
Geological sketch map of the El'ozero rare-metal deposit and the location o...
Published: 01 October 2015
, aegirine-arfvedsonite granite; 4, amphibolite and basic metasomatites; 5, gabbro-anorthosite; 6, amphibole-biotite gneiss of the Keivy Terrane; 7, granite gneiss of the tonalite - tronjhemite - granodiorite basement (Central Kola Composite Terrane); 8, main faults. The inset shows the location of the Keivy
Journal Article
Published: 01 June 2012
Mineralogical Magazine (2012) 76 (3): 535–549.
...F ig . 5. Back-scattered electron (BSE) images of CGMs from the Keivy complex. ( a ) Fractured CGM (chv) mantled by thin rim of darker material which we interpret as a result of hydrothermal alteration (sample 1/93); ( b ) fractured CGMs replaced marginally and along cracks by hydrothermally...
FIGURES | View All (5)
Journal Article
Published: 01 November 2016
European Journal of Mineralogy (2016) 28 (4): 789–810.
..., amphibole–biotite gneiss of the Keivy Terrane; 7, granite gneiss of the TTG basement (Central Kola Composite Terrane); 8, main faults. The insert shows the location and structure of the Keivy peralkaline granite complex. (online version in colour) ...
FIGURES | View All (12)
Journal Article
Journal: Economic Geology
Published: 01 November 2016
Economic Geology (2016) 111 (7): 1529–1559.
... Major REE concentrator or accessory Calzirtite Ca 2 Zr 5 Ti 2 O 16 Carbonatite complexes Accessory Cerite-(Ce) (Ce,La,Ca) 9 (Fe 3+ ,Mg)[SiO 4 ] 6 [SiO 3 (OH)](OH) 3 Afrikanda Accessory Chevkinite-(Ce) (Ce,La,Ca) 4 Fe 2+ (Ti,Fe) 4 [Si 2 O 7 ] 2 O 8 Keivy’s peralkaline granite...
FIGURES | View All (18)
Series: Geological Society, London, Memoirs
Published: 01 January 2006
DOI: 10.1144/GSL.MEM.2006.032.01.32
EISBN: 9781862394070
... (Uchta)-Kem; 3, Kostomuksha-Semipalatinsk. The Russian part of the Fennoscandian Shield (Fig. 6 ) can be subdivided into the Lapland-Kola orogen and Karelian provinces ( Mints et al . 1996 ). The Lapland-Kola orogen comprises Archaean terranes (Murmansk, Kola-Liinakhamary, Central Kola, Keivy...
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(CaO+SrO) – FeO* plot to show how hydrothermal alteration can drive CGM acr...
Published: 01 March 2019
and granites, Corupá, Brazil ( Vlach and Gualda 2007 ); 2 = syenitic pegmatite, Vishnevye Mountains ( Macdonald et al. 2015b ); 3 = Shuiquangou syenite ( Jiang 2006 ); 4 = quartzolite, Rova occurrence, West Keivy massif ( Bagiński et al. 2015 ); 5 = carbonate veins, Vishnevogorsky complex ( Makagonov
Journal Article
Published: 01 August 2017
Mineralogical Magazine (2017) 81 (4): 873–893.
...) ; [2] Bagiński et al. (2016); [3] Macdonald et al. (2015 b ); [4] Macdonald et al. (2015 c ). Numerous Zr-Y- REE -Nb ore occurrences and deposits are associated with the Keivy alkali granite complex, Kola Peninsula, the only known Archaean A-type granite in the world ( Mitrofanov et al...
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Journal Article
Published: 01 October 2015
Mineralogical Magazine (2015) 79 (5): 1039–1059.
..., aegirine-arfvedsonite granite; 4, amphibolite and basic metasomatites; 5, gabbro-anorthosite; 6, amphibole-biotite gneiss of the Keivy Terrane; 7, granite gneiss of the tonalite - tronjhemite - granodiorite basement (Central Kola Composite Terrane); 8, main faults. The inset shows the location of the Keivy...
FIGURES | View All (10)
Journal Article
Published: 01 October 2015
Mineralogical Magazine (2015) 79 (5): 1019–1037.
... of the Shuiquangou complex, China, and tracked element redistribution during the alteration. In a study of A-type granites and syenites of the Graciosa Province, southern Brazil, Vlach and Gualda ( 2007 ) documented compositional changes resulting from the interaction between chevkinite-(Ce) and post-magmatic...
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( a ) A chevkinite-(Ce) (CGM) crystal that has partially reacted to form al...
Published: 01 March 2019
a scalloped reaction front. Other phases are biotite (Bt), apatite (Ap), ilmenite (Ilm), and plagioclase (Pl). ( b ) Chevkinite-(Ce) and monazite-(Ce) apparently growing in equilibrium, in association with zircon and fergusonite-(Y), in quartzolite, Keivy massif (from Macdonald et al. 2017b ). ( c
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BSE images of CGM occurrences in igneous rocks. ( a ) Subhedral phenocryst ...
Published: 01 March 2019
Figure 12. BSE images of CGM occurrences in igneous rocks. ( a ) Subhedral phenocryst of chevkinite-(Ce) (Chv) in comendite obsidian (glass, Gl), Olkaria complex, Kenya Rift Valley. ( b ) Associated with primary quartz (Qtz) and biotite (Bt), Lucerne Granite, Hancock County, Maine, U.S.A
Journal Article
Published: 01 March 2019
American Mineralogist (2019) 104 (3): 348–369.
... and granites, Corupá, Brazil ( Vlach and Gualda 2007 ); 2 = syenitic pegmatite, Vishnevye Mountains ( Macdonald et al. 2015b ); 3 = Shuiquangou syenite ( Jiang 2006 ); 4 = quartzolite, Rova occurrence, West Keivy massif ( Bagiński et al. 2015 ); 5 = carbonate veins, Vishnevogorsky complex ( Makagonov...
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Journal Article
Published: 01 February 2007
Mineralogical Magazine (2007) 71 (1): 1–16.
...R. Macdonald; S. Karup-Møller; J. Rose-Hansen Abstract Electron microprobe analyses are presented for astrophyllite-group minerals from hydrothermal veins and pegmatites of the Ilímaussaq complex, South Greenland. The analyses fall mainly into two groups: (1) niobophyllites with the highest Nb/(Nb...
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Journal Article
Published: 01 August 2021
Mineralogical Magazine (2021) 85 (4): 465–468.
..., an accomplished artist and photographer, and a tireless explorer of the Kola wilderness ( Fig. 1 ). Grisha passed away suddenly on July 7, 2019, during a field excursion to Mt. Eveslogchorr in the Khibiny (also known as Khibina) alkaline complex, Kola Peninsula, Russia. This was the very place where he started...
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Journal Article
Published: 01 December 2008
The Canadian Mineralogist (2008) 46 (6): 1385–1386.
... author of that contribution, Peter C. Burns, was strongly influenced by Joe’s work on the topology of complex structures, in particular those of zeolites. The cover of an issue dedicated to the memory of Joe Smith just has to recall his monumental work on feldspar-group minerals. We show a very...
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Journal Article
Published: 01 December 2010
Russ. Geol. Geophys. (2010) 51 (12): 1247–1256.
... work on nepheline concentrates from the Apatit Joint-Stock Company, and the Achinsk integrated plant, on urtites from the Kiya-Shaltyrskoe deposit. This is a complex raw material. Alumina is extracted using the sintering technology; other products of the ores are soda, potash, and cement. In 2009...
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