 | | 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 |  | Humbert, F., Elburg, M.A., Agangi, A., Belyanin, G., Akoh, J., Smith, A.J.B., Chou, Y-M., Beukes, N.J. (2020) A ~1.4 Ga alkaline mafic sill from the Carletonville area: connection to the Pilanesberg Alkaline Province?. South African Journal of Geology, 123 (4). 597-614 doi:10.25131/sajg.123.0039 | Journal (article/letter/editorial) | | ~1.4 Ga alkaline mafic sill from the Carletonville area: connection to the Pilanesberg Alkaline Province... Box 524, Auckland Park 2006, Johannesburg, South Africa Shenzhen Key Laboratory of Marine Archaea Geo-Omics... Box 524, Auckland Park 2006, Johannesburg, South Africa e-mail: marlinae@uj.ac.za A. Agangi DSI-NRF... Box 524, Auckland Park 2006, Johannesburg, South Africa Department of Earth Resource Science, Akita... Box 524, Auckland Park 2006, Johannesburg, South Africa e-mail: gabelyanin@uj.ac.za; julieta@uj.ac.za; |  | | 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...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...around sövitic carbonatites, some fine-grained calcite carbonatites and, less commonly, around other carbonatites |  | | 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) | | 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...mainly dolomite carbonatite, with subordinate calcite carbonatite. Reconstruction of the composition...liquid immiscibility, Gardar rift, Qassiarsuk Complex, Greenland. Sommaire Le complexe mésoprotérozoïque |  | | Journal (article/letter/editorial) | | from the Abercrombie beds, New South Wales, 381; - - manganian, from West Bengal, India, 75 ANDERSEN, T...lead oxycarbonate as a mine-fire product, 647; NEW SOUTH WALES,sapphire dating experiments, 113; TASMANIA...599 Black slate, from the Abercrombic beds, New South Wales, 381 Blueschist terrain, fluid inclusions...and Ksl~UT, J. R., rare minerals in Dalbeanie, South Scotland, 129 BRAZIL, blue tourmalines from, 553;...inclusions in fluorite veins, 335 Broken Hill, see New South Wales, Australia BROWN, P. E., see HARRISON, T. |  | | Journal (article/letter/editorial) | | Source and evolution of the alkaline Pilanesberg Complex, South Africa Marlina A. Elburg, R. Grant Cawthorn... Source and evolution of the alkaline Pilanesberg Complex, South Africa, Chemical Geology (2016), doi:...MANUSCRIPT Source and evolution of the alkaline Pilanesberg Complex, South Africa Marlina A. Elburg1, R. Grant...Johannesburg, P.O Box 524, Auckland Park 2006, South Africa; marlinae@uj.ac.za. School of Geosciences, University...2050, T 2 SC R IP South Africa Abstract The Pilanesberg Complex (South Africa) is one of the world‟s |  | | Journal (article/letter/editorial) | | glass and calcite carbonatite in lapilli from extrusive carbonatites at Rangwa Caldera Complex, Kenya G...Caldera Complex, part of the large Kisingiri nephelinite-carbonatite volcano, Homa Bay District, western...agglomerate and tuffisite, and a number of intrusive calcite carbonatites. A detailed petrographic and electron...probably also originally potassic silicate) or calcite carbonatite, which suggests that two molten liquids...10 mm-diameter lapilli contain quench-textured calcite crystals set in devitrified glass. They are interpreted |  | Goff, B. H., Weinberg, R., Groves, D. I., Vielreicher, N. M., Fourie, P. J. (2004) The giant Vergenoeg fluorite deposit in a magnetite?fluorite?fayalite REE pipe: a hydrothermally-altered carbonatite-related pegmatoid?. Mineralogy and Petrology, 80 (3) 173-199 doi:10.1007/s00710-003-0012-6 | Journal (article/letter/editorial) | | Kromdraai, Rust De Winter, SA, Pienaar’s River, South Africa Received February 5, 2003; revised version accepted...Paleoproterozoic Vergenoeg fluorite deposit in South Africa is hosted in a breccia pipe comprising units...the Vergenoeg Pipe shows greater similarities to alkaline rocks, in particular the Phalaborwa carbonatite...suggests an alternative genetic relationship with alkaline magmas, in which some geochemical and radiogenic...fluorite deposit, within the Vergenoeg Igneous Complex (Fig. 1), has a fluorite resource in excess of |  | | 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...re-established by Saether (1957), demonstrated that calcite-rich rocks could have all the characteristics of...(1948) conducted a meticulous study of the Aln6 complex. He maintained that alkali carbonatite magma was...associated alkaline silicate rocks were all metasomatic products of fenitization and that the calcite-rich |  | | 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 |  | | Journal (article/letter/editorial) | | Keith Bell Sr and Nd isotope data of apatite, calcite and dolomite as indicators of source, and the relationships...detailed Sr-Nd isotopic study of primary apatite, calcite and dolomite from phoscorites and carbonatites...correlations. Strontium isotope data from coexisting calcite and dolomite support the findings from the apatite...distinct intrusive phases. Oxygen isotopic data from calcite and dolomite ( 8 1 s O = + 7 . 2 to +7.7°~;,, SMOW)...Detailed studies of carbonatites from Canada, East Africa and the Kola peninsula of Russia have shown that |  | | 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...controlling 813C and 8 80 during crystallisation of calcite from carbonatite magmas is discussed. KEVWO~OS:carbonatite...KEVWO~OS:carbonatite, nepheline syenite, GrCnnedal-fka complex, Gardar, Greenland. Introduction MAGMATISMin the |  | Bolonin, A. V., Nikiforov, A. V., Lykhin, D. A., Sugorakova, A. M. (2009) The Chailag-Khem fluorite-barium-strontium rare earth carbonatite occurrence, the Western Sayan Range, Russia. Geology of Ore Deposits, 51 (1) 17-32 doi:10.1134/s1075701509010024 | Journal (article/letter/editorial) | | 35, Moscow, 119017 Russia b Tuva Institute of Complex Development of Natural Resources, Siberian Branch...disseminations in host rocks. Massive ore consists of calcite, strontianite, and quartz; impregnations of euhedral...sulfides, rutile, and uraninite. Late metasomatic calcite and strontianite segregations and veinlets are...situated in the south of Krasnoyarsk krai close to the border of the Republic of Tyva, 68 km north of the large...large Karasug carbonatite deposit of complex Fe–F–Ba–Sr– REE ore. The geographic coordinates of the occurrence |  | | Journal (article/letter/editorial) | | there is no indication that dolomitization of calcite has occurred or that there was any other precursor...one of a number of subvolcanic intrusions on the south coast of the Beara Peninsula in County Cork, Ireland...441.00 Ma for a penetratively deformed ultramafic alkaline lamprophyre pipe containing a mantle xenocryst...sorted (up to 10 cm in length) tabular clasts of local sandstone and mudstone, with elongation parallel...parallel to the bedding in the host country rock. The local provenance of clasts and their orientation suggest |  | 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 |  | 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 |  | | Journal (article/letter/editorial) | | strata and extends the results to plutons in more complex terraines. The problems of the vertical zonation...volcanic sequences, and pebbles of ultramafic and alkaline rocks have been discovered in the basal conglomerates...parts of the Paleozoic sequence, widespread in the west of the region, are more than 1000 m thick. This...porphyritic facies of the dunite intrusive). There are ring struc tures in the central part of the pluton,...carbonatites, marking the feeder pipes for the widespread alkaline-ultramafic volcanics. Thus, this is a volcano-pluton |  | 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...carbonatite mineral assemblage is identified as calcite + magnetite + apatite ± augite ± barium-rich biotite...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 |  | | Journal (article/letter/editorial) | | 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...nature of the carbonate mineral phases in some alkaline volcanic rocks, particularly tuffs, will prove...rectangular crystals or crystal aggregates of calcite as being after nyerereite, a ubiq- uitous phase...recent Oldoinyo Lengai natrocarbonatite lavas. This calcite is now generally considered to be primary (e.g |  | | Book | | springer.com To my wife Foreword The Earth is a complex and dynamic system that over 4.5 billion years...Corporation of South Africa, the Chair of Economic Geology at Rhodes University, South Africa, and since...appointments at the Astrobiology Centre, University of New South Wales, Sydney, and the China University of Geosciences...which has included work in Europe, southern Africa, South East Asia, New Zealand, the southwest Pacific...(GSWA) typed most of the tables, especially the complex ones. Jean Johnston and Chris Hocking performed |  | 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) | | Printed in The Netherlands New evidence from a calcite-dolomite carbonatite dyke for the magmatic origin...major and trace element distribution in dolomite-calcite carbonatite dykes at Bayan Obo are provided, and...contribution focuses on the geochemistry of a dolomite-calcite dyke cutting quartzites, on the fenites formed...marble, but as that paper uncritically accepted local knowledge presented to us in 1988 that H8 was a...finely crystalline portions of the H8 dolomite Calcite-dolomite carbonatite dyke at Bayan Obo 225 Fig |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | 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 |  | Yang, Kui-Feng, Fan, Hong-Rui, Santosh, M., Hu, Fang-Fang, Wang, Kai-Yi (2011) Mesoproterozoic carbonatitic magmatism in the Bayan Obo deposit, Inner Mongolia, North China: Constraints for the mechanism of super accumulation of rare earth elements. Ore Geology Reviews, 40 (1) 122-131 doi:10.1016/j.oregeorev.2011.05.008 | Journal (article/letter/editorial) | | magmatism in the Bayan Obo deposit, Inner Mongolia, North China: Constraints for the mechanism of super accumulation...Obo China a b s t r a c t The Bayan Obo mine in North China contains the largest rare-earth element (REE)...the Bayan Obo deposit, including dolomite, calcite and calcite-dolomite carbonatite varieties. The contact...contact relations show that the intrusion of calcite carbonatite dykes post-date the dolomite dykes during...calcitedolomite [(La/Yb)N ranging from 51 to 57], to calcite type [(La/Yb)N ranging from 85 to 4617]. This evolutionary |
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