 | | Journal (article/letter/editorial) | | elsevier.com/locate/gr Intracontinental anorogenic alkaline magmatism and carbonatites, associated mineral...Editor: M. Santosh Keywords: Anorogenic granites Alkaline complexes Carbonatites Mineralisation Mantle plume...plume a b s t r a c t Intracontinental alkaline complexes and carbonatites commonly occur in rift-related...carbonatite, I have used examples of anorogenic alkaline complexes and carbonatites that are effectively...geological events. In this context, I report on two alkaline complexes and associated mineralisation in Namibia |  | | Journal (article/letter/editorial) | | silicate-carbonate liquids at the Kruidfontein carbonatitic volcanic complex, Transvaal L.B. CLARKE AND M...Leicester, LE1 7RH, UK Abstract The Kruidfontein volcanic complex is a Proterozoic collapsed carbonatitic...of AI by Fe. K EYWORDS: carbonatite, Kruidfontein, South Africa, magma mixing, metasomatic reaction.... Introduction THE circular structure at Kruidfontein, some 100 km NW of Johannesburg, was shown to be...be the remnants of a carbonatitic volcanic complex by Verwoerd (1967). The structure is typical of many |  | | Journal (article/letter/editorial) | | activity, usually alkaline igneous activity. Carbonatites are not usually recognized as alkaline, as most contain...originally alkaline, and that the alkalinity was lost during the process of fenitization. Thus “alkaline igneous...each other; each has coexisting carbonatite and nephelinite. In this contribution, I consider what the alkalis...Brøgger in 1921 for certain rocks of the intrusive complex at Fen in southern Norway. He described fenite...country-rock in contact with the igneous rocks of the Fen complex; however, he did not apply the term to rocks produced |  | | Journal (article/letter/editorial) | | from extrusive carbonatites at Rangwa Caldera Complex, Kenya G. ROSATELLI1,*,{, F. WALL2 AND M. J....Caldera Complex, part of the large Kisingiri nephelinite-carbonatite volcano, Homa Bay District, western...WORDS : carbonatite, Rangwa Caldera Complex, Kenya, nephelinite. Introduction TO date, extrusive rocks...important petrogenetic information. Carbonatite-nephelinite stratovolcanoes are the most common form of carbonatite...suite of rocks from the ~16 Ma Rangwa Caldera Complex of the Kisingiri volcano, consisting of over 350 |  | | Journal (article/letter/editorial) | | Ž1996. found that biotites from the Stillwater complex, Montana have an average d 37 Cl of y0.18‰. On...most of the chlorine present in the Stillwater complex was derived from a subducted crustal source. In...and six calcium-rich carbonatites from Europe and Africa. These analyses represent the first data on stable...ŽBrogger, 1921.. The other seven samples are from ¨ Africa. OL112 is a natrocarbonatite from Oldoinyo Lengai...Chemical Geology 140 (1997) 137–143 complex, Transvaal, S. Africa, and sample 85CK64 is a magnetite-bearing |  | | Report (chapter) | | S U M M A R Y : Carbonatites found in strongly alkaline intra-plate petrographic volcanic provinces are...largely through the impact of work in Scandinavia and Africa. Br6gger's work (1921), at Fen in S Norway, which...(1948) conducted a meticulous study of the Aln6 complex. He maintained that alkali carbonatite magma was...intrusive material at Aln6, that the associated alkaline silicate rocks were all metasomatic products of...(1935) were the first to identify carbonatites in Africa. Garson re-investigated the Malawi complexes of |  | | Journal (article/letter/editorial) | | SILICATE AND CARBONATITIC MAGMAS IN THE QASSIARSUK COMPLEX, GARDAR RIFT, SOUTHWEST GREENLAND Tom ANDERSEN...Norway Abstract The Mesoproterozoic Qassiarsuk complex in the Gardar Rift in southwestern Greenland comprises...pyroclastic rocks and subvolcanic intrusions of alkaline silicate rocks and carbonatites. The volcanic...liquid immiscibility, Gardar rift, Qassiarsuk Complex, Greenland. Sommaire Le complexe mésoprotérozoïque...carbonatites are associated in time and space with alkaline silicate rocks (e.g., Woolley 2003), there is |  | | Journal (article/letter/editorial) | | African literature is essentially concerned with local areas within each country, only one country is represented...The geology and physiography of parta of Ncheu, South Syasa and Upper Shire districti: Nyaaaland Geol...Precambrien de I’Afrique Occidentale Franwise: Fr. West Afr. Dir. Mines, Bull. U, 107 pp. Ft. Weat Afr.:...Notice explicative sur la feuille Abidjan-Oueet: Fr. West Afr. Serv. GBol., Carte GBol., 25 pp. Fs. Wed Afr...Afr.: 1 quart&e. Bosazw, V. L. (19378) Notes on South African materiels for silica refractories: Geol |  | | Journal (article/letter/editorial) | | extrusive carbonatites are melilite-bearing rocks, nephelinite and/or ijolite, and phonolite and/or nepheline...large volumes of silicate rocks and follow a more complex genesis, probably involving ponding and differentiation...Namibia Goudini, South Africa Kruidfontein, South Africa Melkfontein, South Africa Catanda, Angola Santiago...rocks column: M melilitite or melilite nephelinite; N nephelinite; Te tephrite; P phonolite; T trachyte;...nature of the carbonate mineral phases in some alkaline volcanic rocks, particularly tuffs, will prove |  | Macdonald, R., Kjarsgaard, B. A., Skilling, I. P., Davies, G. R., Hamilton, D. L., Black, S. (1993) Liquid immiscibility between trachyte and carbonate in ash flow tuffs from Kenya. Contributions to Mineralogy and Petrology, 114 (2) 276-287 doi:10.1007/bf00307762 | Journal (article/letter/editorial) | | 24 Ma and 0.1 Ma. The initial stages were very complex, associated with the eruption of trachybasaltic...trachytic agglutinate flows were erupted from a zone of ring fractures. Eruption of 277 00 A J 13J { magma...been identified but were possibly located on the ring fracture zone. The three units collectively formed...of silicate and carbonate liquids in the Kruidfontein complex (Clarke and LeBas 1990). We suggest that...Tanzania (Mariano and Roeder 1983) and the Kruidfontein complex, Transvaal (Clarke and Le Bas 1990). 500 |  | | Report (volume) | | iSP:~.,~r of'Atrica Fluorspar Resources of Africa By RALPH E. VAN ALSTINE and PAUL G. SCHRUBEN GEOLOGICAL...resources of Africa. (Geological Survey bulletin ; 1487) Bibliography: p. 1. Fluorspar-Africa. I. Schruben...17 18 18 21 ILLUSTRATIONS Page PLATE 1. Map of Africa showing the location of fluorspar and carbonatite...1 . Comparison of fluorspar production from South Africa with total African fluorspar production, 1918-76...16 TABLES Page TABLE 1. 2. 3. 4. Fluorite in Africa------------------------------------------Selected |  | | Book (edition) | | Venezuela, Brazil, Paraguay, Angola and South-West Africa, i.a. Carbonatites are now the major sources...Canada Brazil Greenland, Europe, and the U.S.S.R. Africa India APPENDICES REFERENCES LOCALITY INDEX SUBJECT...Society of South Africa and C. A. Strauss and F. C. Truter (1950A) : Geological Society of South Africa and...Society of South Africa and R. L. Johnson (1961) 6-12: Geological Society of South Africa and R. L. Johnson... Figure Figure 10-1: Geological Society of South Africa and S.J. Shand (1921A) 10-5: American Journal |  | | Journal (article/letter/editorial) | | rocks from the Igaliko Dyke Swarm, Gardar Province, South Greenland: field, geochemical and C-0-Sr-Nd isotope...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...genesis, prior to the production of more voluminous alkaline lamprophyre and basalt magma during repeated rifting...geological occurs Nepheline-Syenite South Greenland carbonatite dykes Complex and as a late plug associated |  | | Journal (article/letter/editorial) | | Detailed studies of carbonatites from Canada, East Africa and the Kola peninsula of Russia have shown that...source. The Palaeozoic K o l a alkaline province is situated between north-eastern Finland and the eastern...peninsula, Russia, and constitutes one of the largest alkaline-carbonatite provinces yet known. It covers an...rifting, particularly the north-east trending K o n t o z e r o graben and north west trending Y u o v - K...regional isotopic studies of Palaeozoic ultrabasic-alkaline carbonatite and nepheline syenite complexes from |  | | Journal (article/letter/editorial) | | rocks from the GrCnnedal-[ka Nepheline Syenite complex, South Greenland: C-O-Sr isotope evidence N. J. G...Abstract The Grcnnedal-Ika ring complex (1299 _ 17 Ma) in the Gardar province, South GreenLand is composed...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...the Mid-Proterozoic Gardar Province, South Greenland was related to repeated episodes of continental rifting |  | Moore, K.R., Wall, F., Divaev, F.K., Savatenkov, V.M. (2009) Mingling of carbonate and silicate magmas under turbulent flow conditions: Evidence from rock textures and mineral chemistry in sub-volcanic carbonatite dykes, Chagatai, Uzbekistan. Lithos, 110 (1) 65-82 doi:10.1016/j.lithos.2008.11.013 | Journal (article/letter/editorial) | | Uzbekistan a b s t r a c t The Triassic Chagatai Complex, Uzbekistan, comprises explosive pipes and dykes...similar to that of trachyte dykes in the Chagatai Complex. Using primarily rock textures and mineral chemistry...interpretation of magma mingling textures in the Chagatai Complex are unique amongst reported carbonatite occurrences:...diamonds in silicocarbonatite dykes of the Chagatai Complex, Uzbekistan (Djuraev and Divaev, 1999; Lapin et...xenocrystic passenger. However, the Chagatai rocks are complex, with varieties of silicocarbonatite plus sövite |  | | Report (volume) | | Alkaline Igneous Rocks Geological Society Special Publications Series Editor K. C 0 E GEOLOGICAL... GEOLOGICAL SOCIETY SPECIAL PUBLICATION Alkaline Igneous Rocks E D I T E D BY J. G. F I T T O N & B. G. J....Library of Congress Cataloging-in-Publication Data Alkaline igneous rocks.--(Geological Society special publications...Upton, B. G. J. III. Series 552'. 1 QE462.A4 Alkaline igneous rocks. (Geological Society special publication;...metasomatism--perspective and prospect vii ix 1 MENZIES, M. Alkaline rocks and their inclusions: a window on the Earth's |  | | Journal (article/letter/editorial) | | sedimentary carbonate rocks (H8s) show weak deformation north of the Kuangou fault zone, this unit is not metamorphosed...dolomitic marbles (H8f and H8c) that occur to the south of the Kuangou fault zone are sheared, deformed...can be geologically divided into two parts: (1) north of the Kuangou fault zone, the lithology is represented...Sciences, 1988), where no mineralization occurs; (2) south of the Kuangou fault zone, the lithology in the...LCS-05 (this sample is taken from Lachaoshan, 50 km south of the Bayan Obo deposit, beyond the scope of map) |  | Pirajno, Franco, González-Álvarez, Ignacio, Chen, Wei, Kyser, Kurt T., Simonetti, Antonio, Leduc, Evelyne, leGras, Monica (2014) The Gifford Creek Ferrocarbonatite Complex, Gascoyne Province, Western Australia: Associated fenitic alteration and a putative link with the ~1075Ma Warakurna LIP. Lithos, 202. 100-119 doi:10.1016/j.lithos.2014.05.012 | Journal (article/letter/editorial) | | The gifford creek ferrocarbonatite complex, province, western australia: Associated fenitic...leGrass, Monica, The gifford creek ferrocarbonatite complex, province, western australia: Associated fenitic...MANUSCRIPT THE GIFFORD CREEK FERROCARBONATITE COMPLEX, T PROVINCE, WESTERN AUSTRALIA: ASSOCIATED RI... Abstract The Gifford Creek Ferrocarbonatite Complex (GFC), located in the NeoarcheanPaleoproteroic...Metamorphics. The ferrocarbonatites are associated with complex and irregularly distributed zones of fenitic alteration |  | Le Bas, M. J., Xueming, Y., Taylor, R. N., Spiro, B., Milton, J. A., Peishan, Z. (2007) New evidence from a calcite-dolomite carbonatite dyke for the magmatic origin of the massive Bayan Obo ore-bearing dolomite marble, Inner Mongolia, China. Mineralogy and Petrology, 90 (3) 223-248 doi:10.1007/s00710-006-0177-x | Journal (article/letter/editorial) | | marble, but as that paper uncritically accepted local knowledge presented to us in 1988 that H8 was a...rock. Leaving out the limestones and dolomites north of the Kuangou Fault (Fig. 1) that are sedimentary...sedimentary in origin, the H8 dolomite marble south of the Fault was also originally interpreted as a sediment...the Main Ore Body at Bayan Obo and about 100 m north of the contact with the coarse-grained H8 dolomite...carbonatite) but it may be just another member of the local carbonatite dyke swarm (Le Bas et al., 1992). A |  | Kjarsgaard, B.A., Pearson, D.G., Tappe, S., Nowell, G.M., Dowall, D.P. (2009) Geochemistry of hypabyssal kimberlites from Lac de Gras, Canada: Comparisons to a global database and applications to the parent magma problem. Lithos, 112. 236-248 doi:10.1016/j.lithos.2009.06.001 | Journal (article/letter/editorial) | | Canada K1A 0E8 Earth Sciences, Durham University, South Road, Durham, DH1 3LE, United Kingdom Earth and...from other localities in Canada, Greenland, South Africa and Russia. Together, these calculated parent...typically considered to be silica-undersaturated, alkaline, potassic, CO2-rich rocks. Whole rock major- and...Kjarsgaard@nrcan.gc.ca (B.A. Kjarsgaard). lites from West Africa, making detailed comparison with Kaapvaal kimberlites...published analyses of kimberlites from southern Africa, and Price et al. (2000) and Kopylova et al. (2008) |  | | Journal (article/letter/editorial) | | associated with exsolved dolomite, Phalaborwa, South Africa (Dawson and Hinton 2003); (2,3) Mg-rich calcite...associated with exsolved dolomite at Phalaborwa, South Africa (Dawson and Hinton 2003), and in the present...relatively few exceptions, carbonatite textures are a complex product of different processes involving the parental...melt, and potentially result in inverse or more complex zoning patterns (for possible examples, see Thompson...inequigranular rocks characterized by a bimodal or more complex grain-size distribution. The terms Bporphyritic^ |  | Leat, P. T., Riley, T. R., Storey, B. C., Kelley, S. P., Millar, I. L. (2000) Middle Jurassic ultramafic lamprophyre dyke within the Ferrar magmatic province, Pensacola Mountains, Antarctica. Mineralogical Magazine, 64 (1) 95-111 doi:10.1180/002646100549021 | Journal (article/letter/editorial) | | all ¯ood basalts provinces, but small volumes of alkaline ma®c rocks are frequent, occurring, e.g. in the...leat@bas.ac.uk # 2000 The Mineralogical Society alkaline magmas are believed to represent smallvolume mantle...this paper, we provide the ®rst description of an alkaline ma®c igneous rock within the Ferrar magmatic province...is conjugate to the Karoo province of southern Africa (Fig. 1). Ferrar dolerite sills have been dated...Victoria AUSTRALIA AFRICA Ferrar FI Fig. 2 EW FM TI M MBL NEW ZEALAND SOUTH AMERICA Chon- A |  | Yang, X.-M., Yang, X.-Y., Zheng, Y.-F., Le Bas, M. J. (2003) A rare earth element-rich carbonatite dyke at Bayan Obo, Inner Mongolia, North China. Mineralogy and Petrology, 78 (1) 93-110 doi:10.1007/s00710-002-0220-5 | Journal (article/letter/editorial) | | carbonatite dyke at Bayan Obo, Inner Mongolia, North China X.-M. Yang1 , X.-Y. Yang2 , Y.-F. Zheng2 ...(REE), is reported from Bayan Obo, Inner Mongolia, North China. The REE content in the dyke varies from 1...Bas et al., 1992) at Bayan Obo, Inner Mongolia, North China, evidence is accumulating that the ore-bearing...thirty carbonatite dykes occurring within 0–3.5 km north-east of the East ore body of the deposit. The dykes...that it is more appropriate to term it a basement complex. There are also several carbonatite dykes recently |  | | Report (issue) | | Deposit/Site_Name, is meant to identify the area, deposit, district, mine, or occurrence to which the geologic, economic...duplicates, for some areas we report information for a district or area, as well as for specific deposits or mines...Age, Host/Associated Lithology, Host Formation/Complex, Minerals, and Geologic Comments/Deposit Description...the Asia-Pacific region: Honolulu, Hawaii, East -West Resource Systems Institute, p. 66-77. Atfeh, S....Berge, J.W., and Jack, J., 1989, The phosphorites of West Thaniyat, Saudi Arabia, in Notholt, A.J.G., Sheldon |
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