 | | 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) | | 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) | | barium-strontium pyrochlore in a biotite roclc from Panda Hill, Tanganyilca. 1 B y E. J~iGE~, Ph.D., and E....biotite rock (contact-rock of a carbonatite) from Panda Hill, Tanganyika, as small euhedral yellowish-grey...pandaite, from Panda Hill, is proposed for the new mineral. N the concession area of the Mbeya E x p l o r...r a t i o n C o m p a n y ~ (Mbexco) near Mbeya (Tanganyika) (fig. la) Dr. J. F. 0sten, former geologist...and the Colonial Development Corporation. 2 The Mbeya Exploration Company Ltd. (Mbexco) is jointly owned |  | | Report (issue) | | characteristic in carbonatites; detrital. Association: Zircon, aegirine, apatite, perovskite, columbite. Distribution:...NarssaĢrssuk, Greenland. From the Mbeya carbonatite, Panda Hill, near Mbeya, Tanzania. On Rouma Isle, Los Islands |  | | Journal (article/letter/editorial) | | 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...and limonite, minor fluorite, quartz, apatite, zircon, chlorite, piagioclase, rutile, and heamatite....5 9 1 ( 7 0 ) . The name is for the locality, Panda Hill, and is suggested for minerals of the pyrochlore...near the village of Dzhuzumli, Mt. Zirabulaksk region, Bukhara, in a hematite-calcite vein cutting banded |  | | Journal (article/letter/editorial) | | re-evaluated [e.g. Oka (Canada); Fen (Norway); Panda Hill (Tanzania)] for their economic potential. Although...and metamorphosed carbonatites of the Blue River region, British Columbia (Chudy, 2013; Pell, 1994, 1996)...linear Songwe Scarp and Sangu-Ikola carbonatites, Tanzania (Brown, 1964; Coetzee, 1963). 4.2. Carbonatite-bearing...focus has been on carbonatites in the Cordilleran region of British Columbia with most activity by Commerce...are Mrima Hill, Kenya (Paciļ¬c Wildcat Resources), MabouniĆ©, Gabon (ERAMET) Panda Hill, Tanzania (Cradle |  | | 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...phlogopite, richterite ankerite, apatite, albite, zircon, fergusonite(?), anatase(?) calcite, zirconian |  | | Journal (article/letter/editorial) | | with muscovite, microcline, columbite, monazite, zircon, gahnite, kasolite, betafite(?), 373 Lock a' Sgurr...Langevat, South Harris: pegmatite with epidote, zircon, spessartine, allanite, nraninite, thorite, monazite...thomsonite, 506 Berk Hill: apophyllite, 508 Black Cave, Islandmagee: mordenite, 5O9 Carnmoney Hill, Belfast: calcite...lithomarge, xlvi White Mountain: mordenite, 509 Wolf Hill, Legoniel: apophyllite, 508 Tipperary Knockanroe...Tanganyika Mautia Hill, Kongwa, Mpwapwa District: kyanite, talc, yoderite, 282 Panda Hill, Mbeya: biotite, orthoelase |  | | Journal (article/letter/editorial) | | USA of Abstract ro Magmatic activity in the Tanzania Craton-influenced regions of the East African...include: commencement of activity in the Northern Tanzania Divergence (NTD) and Mt. Kenya, Rungwe Volcanic...Keywords: Rift, magmatism, East Africa, Kenya, Tanzania, Craton, Ethiopia, East African Rift System ur...fundamentally controlled by the presence of the Tanzania craton (Fig. 1). The most significant heterogeneity...northern Kenya Rift. Lavas erupting within the Tanzania craton-influenced regions of the EARS exhibit |  | | 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...Jr., completed most of the field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913...accepted the idea of an igneous origin for the Iron Hill carbonatite. In 1924 Bowen, who had visited the...pyrochlore-rich carbonates (e.g. in Oka, Araxa, Fen, Mbeya) has removed Nb from the category of ārareāā elements |  | | 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 |  | | Journal (article/letter/editorial) | | contain tetraferriphlogopite, richterite, accessory zircon, apatite, magnetite, ilmenite, pyrrhotite, pyrite...accessory pyrochlore, betafite (hatchettolite), and zircon. GEOLOGY OF ORE DEPOSITS Vol. 49 No. 2 2007...subvolcanic carbonatite from the Panda Hill deposit, Mbeya, Tanzania (van der Veen, 1965). Secondary dolomite...amphiboles from the Buldym carbonatites fall in region G, where amphiboles are in equilibrium with carbonatitic...titanite, corundum, quartz, and fluorite are noted. Zircon, apatite, magnetite, ilmenite, and sulfides are |  | | 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. ā¢ Both niobium and tantalum are held on the U...~~-~'-'~Ā· ecĀ·I' Q ~. .r :!~;>'. ~, - . . Ā· Mnma Hill TAPanda H'll NZANIA ā¢axa Geolog;c d ā¢ Ā· / ...Greenland United States Brazil Gabon Kenya Nigeria 2 Tanzania Uganda Zaire Malaysia2 Ā· 3 Soviet Union3 Thailand2...figures quoted by ISMI for Greenland, Gabon, Kenya, Tanzania, and Uganda are not accorded status even within |  | | Book | | gemological wealth of East Africa. This unique region encompasses Ā·what may be the world's richest gem...gemologist and geologist, Dr. Peter Keller. Kenya and Tanzania are revealed in their full mineralogical splendor...chrome tourmaline are widely identified with the region. ( continuedon backflap) ā¦ ā¦ ā¦ ā¦ ā¦ ~...Conclusion 11 Chapter 2. Diamond Deposits of Tanzania 15 Location 16 Geology 18 Mining 20 Properties...Northern Province, Tanzania 28 Ruby and Sapphire from Umba, Tanga Province, Tanzania 32 Sapphire from Kenya |  | | Journal (issue) | | COLUMBITE RlJTILE ILMENITE BERYL AND OTHER ZIRCON MINERALS ā¢ BUYERS OF MINERALS ORES CONCENTRATES...Dam Site 292 Plate XVI ā¢ '' 292 Plate XVII Sena Hill, Lower Zambezi . ā¢ ā¢ ā¢ ā¢ Plate XVIII Bridge over...Text-fig. 1 Text-fig. 2 Sovite Dyke, Chigwakwalu Hill, Tundulu . facing p. ā¢ 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 |  | | 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) | | Island, S.Malawi Kangankunde, S. Malawi Nathace Hill, Tundulu, S. Malawi Deerdepoort, Pretoria Central...109 109 Calcite, dolomite/magnetite, apatite, zircon, pyrochlore Ankerite/apatite pyrochlore, magnetite...major/minor Age (Ma) Oldoinyo Lengai, Tanzania Museum Zone, Panda Hill, Tanzania Bukusu, Uganda The whole rock...the highest and lowest total REE contents (Nathace Hill, Oldoinyo Lengai) have the most fractionated REE...Bell and Simonetti, 1996). The data from the Panda Hill sample falls within the mantle array in the 207Pb/204Pb |  | | Journal (article/letter/editorial) | | 277 Pandaite from the Mrima Hill niobium deposit (Kenya) By P. M. HARRIS, B.A. Warren Spring Laboratory...barium pyrochlore (pandaite) has been found at Mrima Hill (Kenya) in a residuum consisting mainly of goethite/limonite...of niobium in the weathered residuum of the Mrima Hill (Kenya) carbonatite in association with Overseas...described from only two other localities, P a n d a Hill (Tanganyika) the type locality (J~ger et al., 1959)...The purpose of this paper is to describe the Mrima Hill pandaite and to compare it with the other reported |  | | Journal (article/letter/editorial) | | Baerzhe; (35) Bonga; (36) Kaluwe; (37) Mrima Hill; (38) Panda Hill; (39) Oka; (40) Araxa; (41) CatalĆ£o I; (42)...Chuktukon Toongi Baerzhe Bonga Kaluwe Mrima Hill Panda Hill Oka Araxa CatalĆ£o I CatalĆ£o II Salitre Tapira...tantaloniobates; tt, titanite; wr, isochron on rock; z, zircon; zw, zinnwaldite; 6 ag means alkali granite; as...rare-earth elements and zircon (Cox et al., 2011), and it is REEs and zircon that are of the main economic...minerals such as eudialyte (kentbrooksite) and zircon with high contents of tantalum, niobium, and rare |  | | Journal (volume) | | 17 Pyrochlore 18 Sphene 19 Zircon 19 Petrogenesis References ii Ilomba Hill from the Songwe Plain to...Alkaline Complex to the Nachendezwaya Carbonatite, Tanzania 6 3 Ilomba rocks plotted on a Si0 2- Al 20 3-K...15 5 Radiometric map of the summit area, Ilomba Hill 16 TABLES 1 2 3 4 5 6 7 Geological history of...l00Ma later. Some 4km to the Ā· north-east, in Tanzania, lies the Nachendezwaya Alkaline Complex, made...sphene (0.023/0 e U 3 0 8 , 3.23/0 Nb 20 5 ) and zircon (0.04% e V 3 0 8 , c. I % Nb 20 5 ), is contained |  | | Journal (article/letter/editorial) | | Cax)2āx(CO3)], known from Ol Doinyo Lengai volcano (Tanzania). A reļ¬nement to the IUGS chemical classiļ¬cation...natrocarbonatitic lavas from Ol Doinyo Lengai, Tanzania that contain 38ā40 wt.% combined Na2O and K2O...Roberts 1984; Zaitsev et al. 2013); Kerimasi, Tanzania (Hay 1983; Zaitsev 2010; Guzmics et al. 2011);... 2010) to very recent (e.g. Ol Doinyo Lengai, Tanzania, which is considered an active volcano). Frequency...carbonatite provinces: (a) East Africa (Kenya, Uganda, Tanzania, and one occurrence in Zambia); (b) Namibia and |  | | Journal (article/letter/editorial) | | Baerzhe; 35, Bonga; 36, Kaluwe; 37, Mrima Hill; 38, Panda Hill; 39, Oka 40, Araxa; 41, Catalao I; 42, Catalao...mineralsā columbite and fergusoniteāare associated with zircon and REE minerals. The most significant part of...released into tailings. NbāZr ores (pyrochlore and zircon) of the carbonatiteāfoidolite Nemegosenda massif...Bonga (the Congo craton); the Kaluwe, Panda Hill, and Mrima Hill (East African rift); and the Oka (Grenvillian...pyrochlore are weakly-weathered ones. Only the Mrima Hill massif has a thick laterite crust with the REEs |  | | Journal (article/letter/editorial) | | crust; (3) to assess the nature of the mantle source region that generated the K o v d o r complex. Historical...Zimbabwe (Johnson 1966), Panda Hill (Basu and Mayila 1986) and Ngualla, Tanzania (van Straaten 1989). Apatite-rich...minerals include baddeleyite, calzirtite, pyrochlore, zircon and zirkelite. Serpentine, chlorite, clinohumite...chemical characteristics of the Panda Hill carbonatite complex, Tanzania. J Afr Earth Sci 5:589 598 334...relationships of carbonatites from Southwest and West Tanzania. In: Bell K (ed) Car- bonatites: genesis and |  | | Journal (issue) | | AMBLYGONITE COLUMBITE RUTILE ILMENITE BERYL ZIRCON AND OTHER MINERALS ā¢ ' BUYERS OF MINERALS ORES...Mitie, Sierra Leone ā¢ I General view of Masaboin Hill, taken from European Compound . . . . . . . 82...it should not be overlooked that, for instance, zircon or monazite from recent alluvium may have been...and redeposition along the major faults of the region. New analyses of the 12 Letter from Prof. F. A...complete 19 ) adopted age: 480 Ā± 15 m.y. 5. Zircon, Cape Granite, Lower Cable Station Q,uarry, Cape |  | Tichomirowa, M., Whitehouse, M.J., Gerdes, A., Gƶtze, J., Schulz, B., Belyatsky, B.V. (2013) Different zircon recrystallization types in carbonatites caused by magma mixing: Evidence from UāPb dating, trace element and isotope composition (Hf and O) of zircons from two Precambrian carbonatites from Fennoscandia. Chemical Geology, 353. 173-198 doi:10.1016/j.chemgeo.2012.11.004 | Journal (article/letter/editorial) | | homepage: www.elsevier.com/locate/chemgeo Different zircon recrystallization types in carbonatites caused...UāPb Hf isotopes Oxygen isotopes a b s t r a c t Zircon grains from two Precambrian carbonatites from Fennoscandia...studied by in-situ geochemical and isotope methods. Zircon domains which preserved primary mantle signatures...sections of the carbonatite rocks and separated zircon grains (optical microscopy, optical microscopy...composition of altered zircon domains. For the 2.6 Ga old SiilinjƤrvi carbonatite complex, zircon grains underwent |
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