 | | Journal (article/letter/editorial) | | peralkaline calcite carbonatite magma in the Fen complex, southeast Norway TOM ANDERSEN Mineralogisk-Geologisk...Universitet i Oslo, Sars gate 1, N-0562 Oslo 5 (Norway) LITHOS Andersen, T., 1988. Evolution of peralkaline...in the Fen complex, southeast Norway. Lithos, 22:99-112. In the Fen complex, Telemark, SE Norway, peralkaline...during emplacement of peralkaline magmas in the Fen complex. The overlapping pyroxene trends of these rock...magma was related to the ijolitic rocks of the Fen complex. The present findings question the relevance |  | | Journal (article/letter/editorial) | | Rare Earth Element Geochemistry of the Fen Alkaline Complex, Norway Roger H. Mitchell* and Arild O. Brunfelt...Brunfelt Mineralogisk-GeologiskMuseum, Oslo, Norway Abstract. Determination of rare earth element (REE)...(REE) abundances in rocks of the Fen complex has shown that within rocks of the first magmatic series REE...differentiation and liquid immiscibility on the Fen magmas are discussed and it is considered that parental...limited (< 10%) partial melting of the mantle. All the Fen rocks are placed in a petrogentic scheme in which |  | | Journal (article/letter/editorial) | | aureoles: a case study from the Iivaara alkaline complex, Finland Sven Sindern b a,b,) , Ulrich Kramm...been investigated taking the Iivaara alkaline complex ŽFinland. as a case study. Five main fenitization...precursor mineral assemblage to a syenitic or even cancrinite–syenitic mineral assemblage of the fenites are...discussed for numerous alkaline complexes, e.g., Fen, Norway ŽKresten and Morogan, 1986., Alno, ¨ Sweden ŽMorogan...and unweathered fenites of the Iivaara alkaline complex, northern Finland, which were briefly described |  | | Book | | kalsilite, analcime, sodalite, nosean, haüyne, cancrinite and pseudoleucite. M = mafic and related minerals...mode to be determined, or if the carbonates are complex Ca–Mg–Fe solid solutions, then the chemical classification...perovskite. It is evident that kimberlites are complex hybrid rocks in which the problem of distinguishing...in which phlogopite occurs as phenocrysts. The complex compositional and mineralogical criteria required...used for peralkaline varieties characterized by complex Zr and Ti minerals, such as eudialyte, rather than |  | | Journal (article/letter/editorial) | | THE CHEMISTRY OF FENITIZATION" EXAMPLES FROM FEN, NORWAY PETER KRESTEN Geological Survey o[ Sweden, S-751...fenitization: Examples from Fen, Norway. Chem. Geol., 68: 329-349. At Fen, two main types of fenites occur:...wall-rock (C1). tion, even within one particular complex ( Kresten and Morogan, 1986). Detailed studies...the best known of which are those for the Aln5 complex, Sweden (von Eckermann, 1948). These zones have...Outlines of the geology of the Fen complex The wall-rock of the Fen complex is a granitic gneiss of Proterozoic |  | | Journal (article/letter/editorial) | | pages 45-54, 1980 Pyroxenesof the Fen alkaline complex,Norway Rocrn H. MIrcHnu- Department of Geologlt...pyroxenesfrom the undersaturatedrocks of the Fen alkaline complex. Four groups of pyroxenes are present: (l)...tionof the ijolite-silicocarbonatite series.The Fen complexis consideredto representthe root ofan undersaturatedvolcano...magma. Thus none of the rocks currently exposedat Fen are related by in-situ ftactional crystallizationof...crystallizationof a singlebatch of magma. Introduction The Fen complex of alkaline rocks and carbonajust to the tites |  | | Book | | Kresten Valentin R. Troll The Alnö Carbonatite Complex, Central Sweden GeoGuide Series editors Wolfgang...Kresten Valentin R. Troll • The Alnö Carbonatite Complex, Central Sweden 123 Peter Kresten Section for...silicate rock associations focused on the Alnön and Fen complexes in the Fennoscandian Shield (Högbom 1895...this respect, the late Proterozoic Alnö igneous complex in central Sweden is one of the most classical...research on the Alnö carbonatite and alkaline igneous complex since the very first descriptions by Högbom in 1895 |  | | Journal (article/letter/editorial) | | ACCEPTED MAY 21, 1998 The 5 km2 Dicker Willem complex, of Eocene age (49 Ma), is a subvolcanic intrusion...and geochemical evidence from the Dicker Willem Complex, southwest Namibia, relevant to the ijolite–sövite...Lithologically, the greatly dominant component of the complex, making up >99·8% by area, is carbonatite, which...(Cooper, 1988, fig. 8). In the southern part of the complex, in particular, the annular remnant of sövite...this zone, and at other localities around the complex (see Fig. 1), pale biotite–sövite encloses or |  | | Journal (article/letter/editorial) | | outer ring of the Magnet Cove alkaline ring-dike complex. Xenoliths were collected from the Diamond Jo quarry...quarry located in the southern part of the complex. The xenoliths contain abundant diopside and Ti-rich...Magnet Cove complex. INrnolucrroN The Magnet Cove complex is an alkaline ring-dike complex that crops...Spring County, Arkansas. The igneousrocks of the complex intrude deformed Paleozoic sedimentary rocks of...indicate a Cretaceous age of 95-102 Ma for the complex. Fission-track ages (Eby, 1987) indicate two periods |  | | Journal (article/letter/editorial) | | silicate and carbonatite rocks from the same alkaline complex (Mitchell and Crocket 1972; Cullers and Medaris...their melts, respectively, have undergone a more complex history than a formation only by closedsystem liquid... Geology and petrography The Iivaara alkaline complex (29~ , E Long., 65o47,5 , N Lat.) 25 km SE of Kuusamo...et al. 1993). The annular intrusive core of the complex with a diameter of 3-4 km is heterogeneous on a...Subordinate minerals are cancrinite, melanite, sphene and apatite. Cancrinite forms a secondary phase |  | | Journal (article/letter/editorial) | | June 1996 Abstract The Igaliko Nepheline-Syenite Complex of Gardar age (1300-l 120 Ma) includes carbonatite...series of dykes from the Igaliko Nepheline-Syenite Complex which are pertinent to the origin of these carbonatites...Nepheline-Syenite South Greenland carbonatite dykes Complex and as a late plug associated setting as dykes...other Si-undersaturated rocks of the Igaliko Complex, including phonolites and ultramafic lamprophyres...Si-undersaturated form one such swarm near the Igaliko Complex (the Igaliko Dyke Swarm), and range in composition |  | | Journal (article/letter/editorial) | | the Haast River area is underlain by a plutonic complex or magma chambers at depth in which fractionation...of carbonatites at Haast River is diverse and complex. Brown weathering varieties are dominated by ankerite...carbonatite – schist contact. Coarse segregations of cancrinite (Canc) and aegirine (Ae) with subordinate carbonate...Proximal fenite is entirely reconstituted to cancrinite, aegirine and niobian rutile, but retains the...zealand has also been described from the Bayan Obo complex, China (Zhang et al. 1995, reported in Yang & Woolley |  | | Journal (article/letter/editorial) | | Creek (USA)] or re-evaluated [e.g. Oka (Canada); Fen (Norway); Panda Hill (Tanzania)] for their economic potential...review. To date, all major operating and former (Oka, Fen, Lueshe) Nb mines have been developed in primary...Pekov, 2000) in the lujavrites of the Lovozero complex from which a concentrate with about 8 wt.% Nb2O5...Nb, due to the penchant for the element to form complex anions (NbO34 −; NbO76 −; Nb2O26 −) which cannot...Nb minerals whose structure is based upon these complex ions. Typically, basaltic rocks contain less than |  | | Journal (article/letter/editorial) | | carbonate-albite-muscovite-hematite-Nb-rutile and cancrinite-aegirine-carbonate fenites. The protolith foliation...being consistently depleted in the generation of cancrinite fenite. The process approximates to an equal...recrystallized during oxidation, highlighting the complex emplacement history 1 ACCEPTED MANUSCRIPT involving...rocks within the complex (e.g. Morogan and CE Woolley, 1988). At the Callendar Bay complex in Ontario, Canada...of the dyke swarm, above an inferred plutonic complex/magma chamber at depth, the top of which has CE |  | | Book (edition) | | States (nearly all localities), Canada, Germany, Norway, Sweden, Uganda, Tanganyika, Nyasaland, and India...detailed geological survey of the Alné Island complex and announced his results in a series of papers...rocks in the field in 1906. Studies in the Fen area of Norway were begun in 1918, and in 1921 Brogger published...classic memoir on the geology and petrology ofthe Fen area in which the term “‘carbonatite”’ was first...completed most of the field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although |  | | Journal (article/letter/editorial) | | 1995), Chilwa Island, Malawi (Woolley 1969) and Fen, Norway (Brøgger 1921). As a result of this uncertainty...for certain rocks of the intrusive complex at Fen in southern Norway. He described fenite as any rock,...country-rock in contact with the igneous rocks of the Fen complex; however, he did not apply the term to rocks...around other carbonatites of the same intrusive complex (Dixey et al. 1955, Brown 1964, Garson 1965, von...fenites surrounding the carbonatites of the Tundulu complex, Malawi, Garson (1962) traced in detail, with supporting |  | | Journal (article/letter/editorial) | | zone Schist. Cancrinite from cancrinite-dolomite segregation between carbonatite and cancrinite-aegirine...Pivot Creek Dolomite Calcite Albite Hematite Cancrinite 12.0 11.5 11.3 --0.8 8.3 --5.5 --5.9 Biotite...composition of carbonates from the Oka earbonatite complex, Quebec, Canada. Geochim. Cosmochim. Acta 34, 1199-1225...(1969) Ramberg, I.B. : Gravity studies of the Fen Complex, Norway, and their petrological significance. Contr |  | | Journal (article/letter/editorial) | | the rocks and minerals of the Oka carbonatite complex, Quebec G. NELSON EBY Department of Environmental...mineral (87) samples from the Oka carbonatite complex. Whole-rock and mineral data indicate a trend of...conditions. A reasonable model for the origin of the complex involves a limited partial melting of mantle material...and Y in the various minerals of a carbonatite complex, REE and Y abundances were determined for rocks...rocks and minerals from a carbonatite complex located near Oka, Quebec. Previous studies of REE in carbonatites |  | | Book | | nelsonite (Nelson County, Virginia), nevadite, norite (Norway), pacificite, tinguaite (Tingua Mountains, Brazil)...clinopyroxene by International (augite). [Norge (Norway), original locality) Union of Geological Sciences...series), with a little quartz. [Aker parish, Oslo, Norway] (Brogger in 1890) alabaster sed. 1. Massive, usually...Variety of charnockite containing garnet. [Arendal, Norway] arenite sed. 1. General term applied to clastic...kalialaskite. [Birkrem (Bjerkreim), Egersund district, Norway] (Kolderup in 1896) birmite sed. = burmite biscuit |  | | Journal (article/letter/editorial) | | carbonatite intrusives on Brava. a Alkaline silicate complex with phonolite lava flow following today’s topography;...mixtures of both silicate and carbonate rocks. Complex crosscutting relationships are observed at Achada...2010). Furthermore, in this and the following complex a few greenish-brown porphyric dikes were found...oxide. Interstitial calcite is common; subhedral cancrinite may occur interstitial to cpx. Some samples show...Nepheline syenite with euhedral nepheline replaced by cancrinite along grain boundaries. f Evolved nepheline syenite |  | | Journal (article/letter/editorial) | | rocks from the GrCnnedal-[ka Nepheline Syenite complex, South Greenland: C-O-Sr isotope evidence N. J... OX14 2HR, UK Abstract The Grcnnedal-Ika ring complex (1299 _ 17 Ma) in the Gardar province, South GreenLand...xenolithic syenite and a plug of carbonatite. The complex was subsequently intruded by a variety of basic...KEVWO~OS:carbonatite, nepheline syenite, GrCnnedal-fka complex, Gardar, Greenland. Introduction MAGMATISMin the...within the Late Gardar Igaliko Nepheline Syenite Complex (Emeleus and Harry, 1970; Pearce, 1988; Pearce |  | | Journal (article/letter/editorial) | | alkali metasomatism of rocks surrounding the Fen complex in Norway, fenitization has been found to have accompanied...heterogeneity of the original rocks even at a single complex, the.conspicuously patchy development of the fenites...1959; KING and SUTH]]~LAlqI),1966). An intrusive complex consisting of a circular mass of carbonatite (3...nephelinite volcano whose remnants enfold the complex. The exposed Basement gneiss is fenitized, with...Basement and an early-formed ijolite/uncompahgrite complex. The fenites typically contain abundant very pale |  | Zozulya, Dmitry, Kullerud, Kåre, Ravna, Erling, Savchenko, Yevgeny, Selivanova, Ekaterina, Timofeeva, Marina (2018) 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. Minerals, 8 (11) 537 doi:10.3390/min8110537 | Journal (article/letter/editorial) | | Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite...of Geology, University of Tromsø, N-9037 Tromsø, Norway; Kare.Kullerud@bvm.no (K.K.); ekr001@post.uit.no...R.) Norwegian Mining Museum, N-3616 Kongsberg, Norway Correspondence: zozulya@geoksc.apatity.ru; Tel...silicocarbonatite (Seiland igneous province, North Norway), allowing conclusions to be drawn concerning its...garnet; crystal fractionation; Breivikbotn; Northern Norway 1. Introduction Alkaline rocks and carbonatites |  | Abart, R., Bürger, D., Cichocki, G., Greiss, M., Horacek, M., Kaindl, R., Kolb, C., Leber, T., Povoden, E., Teiml, X. (1998) Geologisch-Petrologische Exkursion nach Südnorwegen (Oslo Rift und Kaledoniden) Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 143. | Journal (article/letter/editorial) | | seltene Mineralien im sŸdlichen Oslo Graben Der Fen-Komplex Vererzungen des Kongsbergdistrikts Der Aufbau...sŸdlichen Oslo Graben Vierter Exkursionstag: Der Fen-Komplex FŸnfter Exkursionstag: Die Silberminen von...besonders hŠuÞg. Literatur: [8], [9], [10] A4 Der Fen-Komplex 1921 beschreibt BR¯GGER magmatische Karbonatgesteine...sŸdnorwegischen Ortes Fen, die er als ãKarbonatiteÒ bezeichnet. Seither gilt der Fen-Komplex als TypuslokalitŠt...Der frŸhkambrische, karbonatitische Fen-Komplex liegt in der Telemark-Region in der NŠhe von Ulefoss. Die |  | | Journal (article/letter/editorial) | | Investigation of the Chilwa Island Carbonatite Complex, Malawi: Evidence for a Depleted Mantle Source... rocks from the early Jurassic, Chilwa Island complex, located in southern Malawi, central Africa, suggest...non-nephelinitic intrusive silicate rocks reveal a more complex evolutionary history, involving either selective...disseminations (Garson & Smith, 1958). Five per cent of the complex (Fig. 2) exposed at the surface consists of plugs...1290, and N 1295) from the outer parts of the complex are characterized by lower contents of Downloaded |
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