 | | Journal (article/letter/editorial) | | 842-872 ADDITIONAL DATA ON THE GEOLOGY OF THE MBEYA CARBONATITE L. J. FICK AND C. VAN DER HEYDE....................... Geological setting of the Mbeya Carbonatite ............................ Introduction........................ The Carbonafire-bodyat Panda Hill and its associatedcontact and 851 dike-rocks.......................... 863 864 Mineralogyof Mbeya Carbonatite.......................................been established during the development of the Mbeya Carbonatiteas an economicprospect subsequent to |  | | Journal (article/letter/editorial) | | carbonatite carbonates. q Calcite; n dolomite; 13 ankerite; Ixiiron-bearing calcite. the carbon isotopic...sys~rn&tica~y enriched in C!ls compared to so&es (mainly calcite with accessory minerals) from the same complex...(dolomite bearing) dikes at Sengeri Hill (Mbeya carbonatite, southwestern Tanzania, East Africa; SUWAet al., 1969)...trending belt were sampled: Sukulu Hill, Tororo Hill and Bukusu Hill (Fig. 2, for geology see DAVIES, 1956)...and fenitized granite. The carbonatite at Tororo Hill represents a plug along a dike. The prominent spine |  | | Journal (article/letter/editorial) | | Geomorphologyof the Mbeya Carbonatite ................................ Geology of the Mbeya Carbonat{re ......... Compositionand characterof pyrochlorefrom Mbeya ..................... Value of pyrochlore ........present. INTRODUCTION The Mbeya Carbonatite(originally called the "Panda Hill Pyrochlore Deposit") is nearthe...milesin a direct line west-south-west of the townof Mbeya. The carbonatitewasinvestigated because of its pyrochlore...mappingfor the Tanganyika GeologicalSurvey near Panda Hill in 1950, A.M. M. Spurr observedcrystallinelimestonethat |  | | Journal (article/letter/editorial) | | intergrowths have been describedfrom the Sfve and Panda Hill carbonatitesbv van der Veen (1963). The experimentai...stimulated increasedinterest in high temperature calcite-dolomiteoccurrencesbecauseit may norv be possibleto...It is the purpose of this paper to describesome calcite-dolomitetextures in high temperaturerocks, which...and Bjlrlykke and Svinndal (1960)'the Panda Hill carbonatite (Mbeya, Tanganyika) which has been studied...have already been developed for distinguishing calcite and dolomite in hand specimens,thin sections and |  | | Journal (article/letter/editorial) | | carbon and oxygen isotope ratios of co-existing calcite and dolomite have neither interacted with groundwater...Table 1. The samples from Phalaborwa, Ton>ro, Panda Hill and Goudinii were collected from fre~,;hly-blasted...Gelai magnesite mine, east shore of L. Natron, Tanzania; trona samples were collected from the lake crust...~I~,U * ~' T,atoro,O r.- TmzduluH~II,M e o.~rs Mbeya,[ Kerimo~i. T t30ldoinyo~ngal -E SA ¢' e , e...closelycomparable isotope values for co-existing calcite and dolomite Tie-linesjoin coexisting cahzite a~d |  | | Journal (article/letter/editorial) | | and after replacementof diopside + forsterite * calcite by tremolite + dolomite + ankerite at -300-550...River. Ontario. Canada; carbonatite Panda Hill, Mbeya, Tanzania; carbonatite Woodcox mine, Hybla, Ontario;...MacDonaldmine,Hybla,Ontario; granitic pegmatite Panda Hill, Mbeya, Tanzania; carbonatite Leushe, Lake Kivu, Zaire;...Am : amphibole;Ap : apatite; Bt:biotite; Cal :calcite; Fl :fluorite; llm:ilmenite; Kfs:potassiumfeldspar;...the re+ (5 placementof the diopside + olivine + calcite assemblage z (U by tremolite + dolomite. In contrast |  | | Journal (article/letter/editorial) | | re-evaluated [e.g. Oka (Canada); Fen (Norway); Panda Hill (Tanzania)] for their economic potential. Although...pyroxene calcite carbonatite, magnetite apatite dolomite carbonate, magnetite apatite olivine calcite carbonatite...depending on whether the primary carbonate is calcite, dolomite, or siderite. Many carbonatites exhibit...melilitite-clan carbonatites; (3) kimberlite-clan calcite kimberlites; (4) the aillikite–carbonatite association;...and metamorphosed carbonatites of the Blue River region, British Columbia (Chudy, 2013; Pell, 1994, 1996) |  | | Journal (article/letter/editorial) | | shale, 2.5 mi ENE of Magnet Cove complex. Quartz, calcite benstonite, pyrite, i r o n o x i d e sa r e a...essentially monomineralic. Barite is post-ferroan calcite. 0 . 3 5 ' Euhedral Dreamer's llope, l'remont...u Firesand River, Ontalio o . 6 2 Euhedra in calcite matrix associated Heinrich and with xenocrystic...veins with marginal zones of 0 .061 barite (4Oo/) calcite (4016) and 1.42 fluorite with cores of 9G99/6 barite...breccia zones. Mbeya (Panda Hill) Tanganyika Chilwa Island, Malawi Late quartz-calcite veins with barite |  | | Journal (article/letter/editorial) | | Carillon Dam, Chilwa Island, Fen, Lueshe, Oka, Mbeya, Meech Lake and Verity. Primary features include...some pyrochlore from laterite (e.g. Lueshe and Mbeya of this paper; see below) it is not possible to...Madagascar Vishney Gor, Russia Vishney Gor, Russia Mbeya, Tanzania Carbonatite, Russia Kola Pen., Russia Oka,...(1989) Tanzania Quebec Quebec British Columbia Fen (adit) Fen (adit) Fen (quarry) Lueshe Mbeya 687...apatite calcite, apatite, phlogopite dolomite, calcite, apatite, ‘ferriphlogopite’ ankerite, calcite, richterite |  | | Journal (article/letter/editorial) | | CaO 2.72, COz 2.13, sum 100.1570.After deducting calcite, S as chalcocite, and Fe as loetlingite (these...barium-strontium pyrochlore in a biotite rock from Panda Hill, Tanganyika, Minerol,og.Mag.,32, 10-25 (1959)...a roof pendant of the Mbeya (also called the Panda Hill) carbonatite, near Mbeya, Tanganyika. The rock...5 9 1 ( 7 0 ) . The name is for the locality, Panda Hill, and is suggested for minerals of the pyrochlore...village of Dzhuzumli, Mt. Zirabulaksk region, Bukhara, in a hematite-calcite vein cutting banded marmorized |  | | Journal (article/letter/editorial) | | tacharanite, tobermorite, xonotlite, mesolite, calcite, saponite, thomsonite, 745 The Quirang, Skye: red...(miscalled plinthire), 455; aragonite, zeolites, calcite, apophyllite, chalcedony, garronite, 505; zeolites...zeolites, 202 Baird's Brae, Rouyhfort: calcite, 609 Ballyclore: calcite, 609 Ballycraigy, Lame: dolerite-chalk...vaterite, 535; calcite, 609 Belshaw's quarry, White Mountain: laumontite, 516 Bengore Head: calcite, 609 ; thomsonite...thomsonite, 506 Berk Hill: apophyllite, 508 Black Cave, Islandmagee: mordenite, 5O9 Carnmoney Hill, Belfast: calcite |  | | Book (edition) | | and A. Holmes (1950) : Tanzania Geological Survey and N. J. Guest (1954) : Tanzania Geological Survey and...Tidsskrift and K. S. Heier (1961) Figure 15-9: Tanzania Geological Survey and N. J. Guest (1954) Figure...either be camouflaged in early species (Ba in calcite) or be represented by their own minerals (late...the nepheline rocks are often also very rich in calcite, which in many varieties of these rocks forms graphic...silicates. Other evidence also proves that the calcite and the limestone have really formed part of a |  | | Journal (issue) | | niet over goud of zilver gaat maar wel over Garnet Hill, 15 km noordwest van Ely (4 pp) - een vindplaats...regelmatig aan in de betere mineralenmagazines. Majuba Hill (8 pp) is economisch gezien een eerder middelmatige...Bergischen Land 46-55 Prächtiger Neufund schöner Calcite von der Elmwood -Mine, Tennessee 56-60 Ullmannit...crossroads enigma, Wikes Co., Georgia 3-5 The Sterling Hill mining museum Super Dig 2013 5-6 Fluorescent mineral...Meteoritenjagd in Chelyabinsk 8 Tektit 9-11 Cornetit 12-19 Calcite aus dem Hartsteinwerk Brilon, Sauerland 20-29 Prächtige |  | | Journal (article/letter/editorial) | | level. Sr, Ce and Y partition preferentially into calcite relative to co-existing dolomite, whereas Fe and...favour dolomite. Sr partitions preferentially into calcite relative to co-exisiting apatite, but the light...- Verwoerd, 1967), Tundulu Hill (Upper Jurassic - Garson, 1962), Panda Hill (Lower Cretaceous - Van Straaten... x x x Malawi M26 Tundulu Hill M28 ditto x x Tanzania BD724 Panda Hill BD892 Kerimasi BD893 ditto...apatite grains; only the specimens from Tundulu Hill, Panda Hill and Kerimasi contain strain-free carbonate |  | Neave, David A., Black, Martin, Riley, Teal R., Gibson, Sally A., Ferrier, Graham, Wall, Frances, Broom-Fendley, Sam (2016) On the Feasibility of Imaging Carbonatite-Hosted Rare Earth Element Deposits Using Remote Sensing. Economic Geology, 111 (3) 641-665 doi:10.2113/econgeo.111.3.641 | Journal (article/letter/editorial) | | in North America (Mountain Pass, Oka, Iron Hill, and Gem Hill), albeit in nondigital form. As reviewed...hyperspectral instruments. Examples include mapping the Iron Hill carbonatite-alkaline complex in the United States...HySpex hyperspectral imaging system. 84 69 Calcite Dolomite 43 Fe-dolomite Reflectance (%) − offset...Malawi, Mountain Pass in the United States, Panda Hill in Tanzania, and Sokli in Finland were sourced from...30˚ Uyaynah 0˚ Tororo & Sukulu Kangankunde Panda Hill Chilwa Island, Songwe & Tundulu Phalaborwa |  | | Journal (article/letter/editorial) | | Utah 84112 Mineralogy and Petrology of the Iron Hill Carbonatite Complex, Colorado determine what, if...are ubiquitously assotypes occurring in the Iron Hill carbonatite ciated. For this study I have chosen...Iron complex have been examined in order to deter- Hill carbonatite complex, one of the largest mine the...alkaline igneous rocks with which they are The Iron Hill carbonatite body, also known ubiquitously associated...south of the town of Gunnison. developed at Iron Hill. The carbonatites are The composite intrusion, occupying |  | | Journal (article/letter/editorial) | | isotopic compositions are discussed. Dolomite–calcite carbonatites hosted in ultramafic rocks contain...the dolomite–calcite carbonatites were formed under K-feldspar–calcite, albite–calcite, and amphibole–dolomite–calcite...amphibole–dolomite–calcite facies conditions at 575–300°C. The Buldym pyrochlore deposit is related to carbonatites...(6) phlogopite metasomatic rock, (7) dolomite–calcite carbonatite, (8) dolomite carbonatite and chlo...of dolomite–calcite rock that gives way outward to tetraferriphlogopite–dolomite–calcite and then do |  | | Journal (article/letter/editorial) | | Formation tuffs of the Rukwa Rift Basin, southwestern Tanzania L. Lawrence, C. Spandler, E.M. Roberts, H.L....Formation tuffs of the Rukwa Rift Basin, southwestern Tanzania, LITHOS (2020), https://doi.org/10.1016/j.lithos...occurring ~400 km beneath Ethiopia, Kenya and Tanzania, defined as the African superswell (Nyblade, 2011)...the Usangu Basin and Tukuyu Journal Pre-proof region of the Rungwe Volcanic Province (RVP) (Fig. 1b)...vent or source of appropriate age is known in the region for the NFT, which presents a further challenge |  | | Report (issue) | | Most production appears to be centered in the region of the major alkaline intrusive complexes of Lovozero...Peninsula and Vishnevogorsk in the middle Ural region. • Both niobium and tantalum are held on the U...~~-~'-'~· ec·I' Q ~. .r :!~;>'. ~, - . . · Mnma Hill TAPanda H'll NZANIA •axa Geolog;c d • · / ...Greenland United States Brazil Gabon Kenya Nigeria 2 Tanzania Uganda Zaire Malaysia2 · 3 Soviet Union3 Thailand2...figures quoted by ISMI for Greenland, Gabon, Kenya, Tanzania, and Uganda are not accorded status even within |  | | Journal (issue) | | Dam Site 292 Plate XVI • '' 292 Plate XVII Sena Hill, Lower Zambezi . • • • • Plate XVIII Bridge over...Text-fig. 1 Text-fig. 2 Sovite Dyke, Chigwakwalu Hill, Tundulu . facing p. • Xenoliths in Sovite, S.E...solution appeared to be the removal of Cox's Fort Hill, overlool...able to point out, however, that some of Cox's Fort Hill and the adjacent area (which was planned for installation...necessary to· map carefully the area of Cox's Fort Hill and to calculate the quantities of black shale and |  | Cordeiro, Pedro Filipe de Oliveira, Brod, José Affonso, Palmieri, Matheus, de Oliveira, Claudinei Gouveia, Barbosa, Elisa Soares Rocha, Santos, Roberto Ventura, Gaspar, José Carlos, Assis, Luis Carlos (2011) The Catalão I niobium deposit, central Brazil: Resources, geology and pyrochlore chemistry. Ore Geology Reviews, 41 (1) 112-121 doi:10.1016/j.oregeorev.2011.06.013 | Journal (article/letter/editorial) | | P+Nb+REE 8 0.3 0.21 Mbeya (Panda Hill) Aley Bone Creek (Fir) Argor Tanzania Resource Primary Nb...to 15 m wide plugs and up to 2 m wide dikes of calcite carbonatite occur. Phoscorite is intensely crosscut...pyrochlore evolves toward Ba–Sr-rich compositions in calcite–dolomite carbonatites from Kola carbonatite complexes...same samples has higher δ18OSMOW values than gray calcite and is interpreted as affected by low temperature...crystal fractionation resulted in the formation of calcite carbonatites, which evolved to forsterite–apat |  | | Journal (article/letter/editorial) | | the clumped isotope thermometer used inorganic calcite precipitated at controlled temperatures between...isotope proxy is the length of a unit cell of calcite (5 Å), it is possible to obtain an estimate of...solid-state exchange of isotopes across the unit cell of calcite over 106 to 109 years. Experiments aimed at determining...solid-state diffusion coefficients of O and C in calcite have been conducted at high temperatures (Anderson...fugacity, CO2 partial pressure and the purity of calcite. The range in diffusivities of O and C are shown |  | Johnson, Clark M., Bell, Keith, Beard, Brian L., Shultis, Aaron I. (2010) Iron isotope compositions of carbonatites record melt generation, crystallization, and late-stage volatile-transport processes. Mineralogy and Petrology, 98 (1) 91-110 doi:10.1007/s00710-009-0055-4 | Journal (article/letter/editorial) | | mantle-derived basaltic magmas (δ56Fe=0.0±0.1‰), calcite from carbonatites have δ56Fe values between −1... 2004; Anbar et al. 2005; Polyakov et al. 2007; Hill and Schauble 2008; Shahar et al. 2008). Although...of the carbonatites are sövites (coarse-grained calcite carbonatite). The majority of the complexes are...ijolite, phonolite, nephelinite. Oldoinyo Lengai, Tanzania Still active Natrocarbonatite flows and tuffs...ijolite series rocks, nepheline syenite. Panda Hill, Tanzania 113±6 Mainly sövite but areas of ferrocarbonaite |  | | Journal (article/letter/editorial) | | Island, S.Malawi Kangankunde, S. Malawi Nathace Hill, Tundulu, S. Malawi Deerdepoort, Pretoria Central...(25–55) 130 126 130a 1,340a 1,340 1,269 109 109 Calcite, dolomite/magnetite, apatite, zircon, pyrochlore...magnetite Calcite/magnetite, apatite Bastnaesite-ankerite/apatite, magnetite Ankerite, calcite/K-feldspar...apatite, quartz Calcite/apatite, phlogopite Calcite, ankerite/apatite, quartz Calcite/niocalite, magnetite...gregoryite/sulfide, sylvite Calcite/apatite, magnetite pyrochlore Calcite/magnetite, phlogopite, apatite |  | | Journal (article/letter/editorial) | | carbonatitic melts will sample a sufficiently large region of mantle to homogenize any small-scale Li isotopic... were analyzed. Samples from Oldoinyo Lengai (Tanzania), the world's only active carbonatite volcano...Borden Calcite carbonatite Calcite carbonatite Silico-carbonatite Calcite carbonatite Calcite carbonatite...carbonatite Calcite carbonatite Silico-carbonatite Silico-carbonatite WR WR WR WR WR WR Biotite Biotite 2680...swarm Calcite carbonatite Calcite carbonatite Calcite carbonatite Calcite carbonatite Calcite carbonatite |
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