 | | 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) | | grained and intimately intergrown with hematite, goethite and minerals of the crandallite group. The different...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 |  | | 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...and Ewing, 1995; Wall et al., 1996). Hematite, goethite, uraninite, fergusonite, columbite and fersmite...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 |  | | Journal (article/letter/editorial) | | 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...gudmundite, marcasite, bournonite, boulangerite, goethite, sericite, galena, baryte, ankerite, chalcocite...Tanganyika Mautia Hill, Kongwa, Mpwapwa District: kyanite, talc, yoderite, 282 Panda Hill, Mbeya: biotite, orthoelase |  | | 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 “rare’’ elements |  | 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...(%) − offset for clarity 642 Fluorapatite 49 Goethite Phlogopite 3 20 37 Bastnäsite-(Ce) Monazite-(Ce)...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 |  | | 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 (article/letter/editorial) | | throughout the weathering profile, niobium-beating goethite is thought to represent the final product of pyrochlore...the high cliffs on the northeastern side of Mutoro Hill contain up to 50% feldspar while some are rich in...found and sampled from the upper parts of Mutoro Hill. lxtterite The lower part of the weathering profile...together with the secondary weathering products, goethite, crandallite and nacrite, ttighly weathered material...the upper part of the profile consists mainly of goethite, crandallite, nacrite; although some areas are |  | | Journal (article/letter/editorial) | | 277 Pandaite from the Mrima Hill niobium deposit (Kenya) By P. M. HARRIS, B.A. Warren Spring Laboratory...has been found at Mrima Hill (Kenya) in a residuum consisting mainly of goethite/limonite and gorceixite...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 |  | Melgarejo, Joan C., Costanzo, Alessandra, Bambi, Aurora C.J.M., Gonçalves, Antonio O., Neto, Andrés B. (2012) Subsolidus processes as a key factor on the distribution of Nb species in plutonic carbonatites: The Tchivira case, Angola. Lithos, 152. 187-201 doi:10.1016/j.lithos.2012.06.024 | Journal (article/letter/editorial) | | pyrochlore crystals by goethite, as well as the occurrence of Nb-rich goethite and Fe–Mn oxyhydroxides...by a fine-grained mixture of calcite (Cal2) and goethite (Gth). d) Ankerite (Ank) replaced by quartz (Qtz)...by brownish mixtures of calcite and fine-grained goethite. 5.4. Fluoritized and silicified units Fluoritized...of sequences of radial aggregates of goethite and Nb-rich goethite, hollandite [BaMn2+Mn4+7O16], 16], coronadite...coronadite, gorceixite and gibbsite [Al(OH)3]. Nb-rich goethite may develop fine blades, less than 50 μm in length |  | | Journal (article/letter/editorial) | | Baerzhe; 35, Bonga; 36, Kaluwe; 37, Mrima Hill; 38, Panda Hill; 39, Oka 40, Araxa; 41, Catalao I; 42, Catalao...interest, along with local Nb–brookite and Nb–goethite. All DOKLADY EARTH SCIENCES Vol. 487 Part 1...(discovered here), and Nb-containing rutile and goethite [14]. The Ti–REE–Nb Afrikanda deposit (0.38 Ga...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) | | of Newcastle, New South Wales, Australia, 2Broken Hill Proprietary Company Limited, Central Research Laboratories...Western Australia Finland, Brazil, Guyana, Kenya, Tanzania, Zaire and Uganda (McNeil, 1979; Erdosh, 1979;...hydrous Fe - Nb degradation product (?Nb-bearing goethite), whereas others are partly or totally replaced...assumptions are valid because the abundance of goethite, lepidocrocite, hematite and maghemite and the...Appreciation is expressed to the Management, Broken Hill Proprietary Company Limited, Central Research Laboratories |  | | Journal (article/letter/editorial) | | Baerzhe; (35) Bonga; (36) Kaluwe; (37) Mrima Hill; (38) Panda Hill; (39) Oka; (40) Araxa; (41) Catalão I; (42)...Chuktukon Toongi Baerzhe Bonga Kaluwe Mrima Hill Panda Hill Oka Araxa Catalão I Catalão II Salitre Tapira...(ilmenorutile), and, partially, in Nb– brookite, Nb–goethite, and secondary pyrochlore, which all formed due...at this deposit), Nb–rich rutile, and Nb–rich goethite. 56 TKACHEV et al. Ore minerals are characterized...in the Congo Craton, and the Kaluwe, Panda Hill, and Mrima Hill complexes in the influence zone of the |  | | Book | | gemological wealth of East Africa. This unique region encompasses ·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) ♦ ♦ ♦ ♦ ♦ ~...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 |  | | Catalog/List | | Quartz . 2x2x1t ", £4 . 00 20 . CARMINITE. Benjamin Hill , Sonora , Mexico . Rich carmine- red masses with...men D: As speci men C , 2xl-" , £2 .7 5p 51 . GOETHITE vari ety WOOD IRON . Restormel Royal Iron Mi ne... 2x1-2-x1" , £6 . 00 74 . PARAHOPEI TE. Br oken Hill , Zambi a . Bright sma l l sharp gl assy crystals...2x1-}x1 " , £3 . 50p 82 . PYROCHLORE . Panda Hill, Amboseli , Tanzania . Sharp brownish s ingle crystals with |  | | Journal (article/letter/editorial) | | isomorphous series (e.g. alumogoethite for an aluminian goethite). There remain 142 acceptable names, less than...URSS), vol. 113, p. 1130 (A~oM0reTnT). Aluminian goethite, occurring in bauxites. An unnecessary name. A...per unit cell]. From Dzhuzumli, Mt. Zirabulaksk region, Bukhara. Named after the alchemist Avieenna (Abu... cobaltomelane, &e. (qq.v.), include lines of goethite, cryptomelane, and elizavetinskite (q.v.) ; Ginzburg...phlogopite deposit of the Medviezhy river, Aldan region, Yakutia. Named from the composition. [M.A. 14-280 |  | | Journal (article/letter/editorial) | | ancylite-group and chlorite-group minerals and goethite. Crystals of cerite-(Ce) are typically arranged...perovskite → loparite-(Ce) → titanite → cerite-(Ce) → goethite → calcite and ancylite-group minerals. In thin...perovskite, Ttn: titanite, Cer: cerite-(Ce), Gt: goethite, Anc: ancylite-(Ce) zoned toward calcio-ancylite-(Ce)...chemical characteristics of the Panda Hill carbonatite complex, Tanzania. J. Afr. Earth Sci. 5, 589-598...from the carbonatite volcano, Oldoinyo Lengai, Tanzania. J. Petrol. 36, 797-826. DELLA VENTURA, G., BELLATRECCIA |  | Metz, Michael C., Brookins, Douglas G., Rosenberg, P. E., Zartman, R. E. (1985) Geology and geochemistry of the Snowbird Deposit, Mineral County, Montana. Economic Geology, 80 (2) 394-409 doi:10.2113/gsecongeo.80.2.394 | Journal (article/letter/editorial) | | hydrothermal"carbonatite"dikesassociated with the Iron Hill carbonatite. Introduction tains additional minerals...discussedin detail in Metz (1971) and (1965) at Panda Hill, which indicate partial segreonly a brief accountof...hangingwall of the deposit.The exactin situlocation Goethite in the deposit is derived {¾omdeuteric of the...shownschematically in Figure 2. Biotite crystalsare rimmed by goethite, which give the occursalongthe contactsbetween...crystalshavebeen alteredcompletelyto limoniteas well as to goethite. quartz veins and generally is found in association |  | | Book | | the geological and environmental context of the region followed by in depth and colourful descriptions...magma at the Oldoinyo Lengai volcano in northern Tanzania (Dawson 1962). Ample work has since been carried...1a) in the East African Rift System of northern Tanzania, stands out from the other carbonatite occurrences...surroundings in the East African Rift in northern Tanzania. The small hills on the left side of the image...the currently active Oldoinyo Lengai volcano in Tanzania is striking. A significant difference between the |  | Graupner, Torsten, Klemd, Reiner, Henjes-Kunst, Friedhelm, Goldmann, Simon, Behnsen, Helge, Gerdes, Axel, Dohrmann, Reiner, Barton, Jay M., Opperman, Rehan (2018) Formation conditions and REY enrichment of the 2060 Ma phosphorus mineralization at Schiel (South Africa): geochemical and geochronological constraints. Mineralium Deposita, 53 (8) 1117-1142 doi:10.1007/s00126-018-0791-7 | Journal (article/letter/editorial) | | porous. They are crosscut by yellowbrown veins of goethite or limonite. The pore sizes are variable, ranging...confirmed by IR spectroscopy. Chlorite, talc, goethite and kaolinite (b-axis disordered) are present...Sample Sch5 contains a trioctahedral mica, talc, goethite, a Fe-rich kaolinite (b-axis disordered) and possibly...associated LREEWDS values (Fig. 12). For the Panda Hill carbonatite complex, a similar observation was...chemical characteristics of the Panda Hill carbonatite complex, Tanzania. J Afr Earth Sci 5: 589–598 Behnsen |  | | Journal (article/letter/editorial) | | Prairie Lake [Nuinsco Resources Ltd. 2014], Nkombway Hill [van Straaten 2002] and Sukulu [Karagambe-Kaliiza...g. Nechalacho [Ciuculescu et al. 2013] and Iron Hill [Staatz et al. 1979; van Gosen 2009]). Known major...Crevier, Canada (HR) Elk Creek, USA (HR) Iron Hill, USA (HR) Mabounie, Gabon (HR+W) Montviel, Canada...Australia (W) Mrima Hill, Kenya (W) Oka, S-60 Zone, Canada (HR) Panda Hill, Tanzania (HR+W) Prairie Lake...It consists of bariopyrochlore (4 %), limonite/goethite (36 %) barite (20 %), magnetite with ilmenite |  | | Book | | Freiberg, E. Germany; Pribram, Czechoslovakia; Broken Hill, New South Wales; Chanarcillo, Atacama, Chile; and...Cornwall; at Wallaroo, South Australia and Broken Hill, New South Wales. Found in sandstone at Corocoro...Jagersfontein in the Orange Free State. Also found in Tanzania, Sierra Leone, Ghana, Zaire, Botswana, South-West...Colombia, near the river Pinto. It occurs in the Broken Hill area of New South Wales and in New Zealand and the...localities are Atacama, Chile and Cobalt, Ontario; Broken Hill, New South Wales. Treatment. Any dilute acid apart |  | | Journal (issue) | | dominated in the north by the flat-topped hill of Nsamuzi. Between this hill and the smaller hills of Buzindere...peninsula is found on the southern flank of Nsamuzi Hill. The rock is very fine-grained, highly micaceous...and others on the east and west sides of Buzindere Hill, but it is anticipated that other known laterite...postulate gains support from field observation. In the region of approximately twenty feet from the base of the...Secondary products such as limonite, haematite, goethite and turgite are ubiquitous, and even in the parent |  | | Journal (issue) | | Map of Lower Shire Valley • • ,, fig. 1 Namalambo Hill, Lower Shire Plate I • • ,, fig. 2 Alluvium at Chikwawa...ofpedisediment deposits-or masses of debris carried down hill by gravitation, rain wash and stream action in the...reappears near the Dandi, just north of Namalambo Hill (Plate I, fig. 1), and passes to the west of that...south of the Tangadzi West, beginning with Namalambo Hill opposite Chiromo (seeaccompanying map). From the...111 1. AMALAMBO foregrou11d carries ye1lo\v-recl HILL, LovvER. SrrrRE to11y drift of ty1)e illustratecl |  | Nedosekova, Irina, Vladykin, Nikolay, Udoratina, Oksana, Belyatsky, Boris (2021) Ore and Geochemical Specialization and Substance Sources of the Ural and Timan Carbonatite Complexes (Russia): Insights from Trace Element, Rb–Sr, and Sm–Nd Isotope Data. Minerals, 11 (7) 711 doi:10.3390/min11070711 | Journal (article/letter/editorial) | | (Chadobetsky Uplift); the Nb–Ta–P Neske-Vaara (Kola region) deposits; and some others. Carbonatites of folded...such complexes are found in the Altai-Sayan fold region [8,20–22], Central Tuva [23], Western Transbaikalia...metasomatites) and caras well as goethite-feldspar and quartz-goethite-hematite hydrothermal rocks are...are found in bonatites as well as goethite-feldspar and quartz-goethite-hematite hydrothermal rocks close...also stockwork arcuate zones of goethite-feldspar rocks and quartz-goethite-hematite steeply dipping veins |
|
