 | | Journal (article/letter/editorial) | | April 2013, Vol. 77(3), pp. 213–226 Tinderet volcano, Kenya: an altered natrocarbonatite locality?...ABSTRACT The Tinderet volcano (19.9 to 5.5 Ma), located within the Kavirondo rift in Kenya, contains blocks...blocks of carbonatite lavas with calcite, minor apatite, fluorite, spinel-group minerals, accessory perovskite...mineralogical and isotopic data indicate that the Tinderet carbonatites are similar to natrocarbonatites...These data support the hypothesis that some of the Tinderet carbonatites were originally alkali-rich rocks |  | Campeny, Marc, Kamenetsky, Vadim S., Melgarejo, Joan C., Mangas, José, Manuel, José, Alfonso, Pura, Kamenetsky, Maya B., Bambi, Aurora C.J.M., Gonçalves, Antonio O. (2015) Carbonatitic lavas in Catanda (Kwanza Sul, Angola): Mineralogical and geochemical constraints on the parental melt. Lithos, 232. 1-11 doi:10.1016/j.lithos.2015.06.016 | Journal (article/letter/editorial) | | natrocarbonatite localities worldwide such as Tinderet or Kerimasi, leading to our ACCEPTED MANUSCRIPT...Barker and Nixon, 1989; Eby et al., 2009), Tinderet, Kenya (Deans and Roberts, 1984; Zaitsev et al., 2013)...Oldoinyo Lengai is the only active carbonatite volcano known, and ACCEPTED MANUSCRIPT where unique natrocarbonatite...around 25 modal % and are MA prismatic grains of apatite up to 2 mm (50 modal %), as well as strongly zoned...other carbonatite localities such as the Kerimasi volcano (Reguir et al., SC 2008; Guzmics et al., 2015) |  | Mangler, Martin F., Marks, Michael A.W., Zaitzev, Anatoly N., Eby, G. Nelson, Markl, Gregor (2014) Halogens (F, Cl and Br) at Oldoinyo Lengai volcano (Tanzania): Effects of magmatic differentiation, silicate–natrocarbonatite melt separation and surface alteration of natrocarbonatite. Chemical Geology, 365. 43-53 doi:10.1016/j.chemgeo.2013.11.027 | Journal (article/letter/editorial) | | com/locate/chemgeo Halogens (F, Cl and Br) at Oldoinyo Lengai volcano (Tanzania): Effects of magmatic differentiation...abundances in natrocarbonatites from Oldoinyo Lengai volcano (Tanzania) and the associated silicate rocks in...surface alteration processes. 2. Oldoinyo Lengai Volcano Oldoinyo Lengai is located in Tanzania, approximately...1995). System (Fig. 1). Age data suggest that the volcano has existed for more than 500 000 years (Bagdasarayan...et al., 2012). In recent times it is the only volcano known to have erupted natrocarbonatitic tephra |  | | Journal (article/letter/editorial) | | morphology from volcanic carbonatites in Tanzania, Kenya, Greenland, and India T. DEANS 2o Grove Park Road...identifications of similar magnetites from four localities in Kenya, one in Greenland, and one in India. Despite the...also spelled Galappo) lies at the foot of the volcano Kwaraa (also Kwaraha, or Ufiome), one of several...TINOIERET 3~ o / 0~ eNakuru 3t. L.NaivashaQ Kenya "~"-..~ l_.Mag,~li~ Tanzania L.Natron /2";OLDOINYO...nephelinite/carbonatite volcanoes (underlined) in Tanzania and Kenya. The carbonatites occur at the south-eastern foot |  | | Journal (article/letter/editorial) | | volcanos are known in the East African rift system in Kenya, Uganda, and Tanzania. Although some of these were..." " " Calcite and dolomite with magnetite, apatite, phlogopite, and pyroxene Same Composition of... The eroded cinder cone of the gigantic Elgon Volcano is as much as 85 km in diameter and 3.5 km in height...height. The eroded caldera of the Napak Volcano originally ex ceeded 50 km in diameter and 3.5 km in...in height [ 1 2 ] . The Kizingiri Volcano must once have had a cinder cone more than 50 km in diameter |  | | Journal (article/letter/editorial) | | 12 – 9 Ma) is poorly represented in the Southern Kenya Rift, though magmatic activity is recorded in the...– 4 Ma) is particularly well-represented in the Kenya Rift. Large-scale magmatic events include: commencement...Divergence (NTD) and Mt. Kenya, Rungwe Volcanic Province, and the Southern Kenya Rift. The Stratoid Phase...magmatic events at ca. 3 to 2.5 Ma within the Southern Kenya Rift and NTD. This phase manifests as basalts and...that flood the newly formed graben in the Southern Kenya Rift. This phase also correlates with the main phase |  | Zaitsev, Anatoly N., Britvin, Sergey N., Kearsley, Anton, Wenzel, Thomas, Kirk, Caroline (2017) Jörgkellerite, Na3Mn3+3(PO4)2(CO3)O2·5H2O, a new layered phosphate-carbonate mineral from the Oldoinyo Lengai volcano, Gregory rift, northern Tanzania. Mineralogy and Petrology, 111 (3) 373-381 doi:10.1007/s00710-016-0487-6 | Journal (article/letter/editorial) | | phosphate-carbonate mineral from the Oldoinyo Lengai volcano, Gregory rift, northern Tanzania Anatoly N. Zaitsev...layered phosphate-carbonate from the Oldoinyo Lengai volcano in the Gregory Rift (northern Tanzania). The mineral...LE11 3TU, UK Oldoinyo Lengai is a well-known volcano in northern Tanzania owing to eruptions of highly...and Keller 2006; Keller and Zaitsev 2012). The volcano also contains phonolites, which form the older...process in the evolution of the Oldoinyo Lengai volcano and the formation of alkaline carbonatites and |  | | Journal (article/letter/editorial) | | (REE) and Nb, and host significant deposits of apatite, vermiculite, Cu, Ti, fluorite, Th, U, natural zirconia...Alkaline-carbonatite complexes are significant sources of Cu, apatite, fluorite, vermiculite, and other commodities. Most...surface; dolomite-brown, Naamphibole – green, apatite – white. Coin for scale is 2 cm in diameter. subdivides...[(Na,K,Cax)2–x(CO3)], known from Ol Doinyo Lengai volcano (Tanzania). A refinement to the IUGS chemical classification...carbonatiterelated deposit types (e.g. apatite ores at Seligdar apatite deposit, Russia; Prokopyev et al. |  | Mikhailova, Julia A., Kalashnikov, Andrey O., Sokharev, Victor A., Pakhomovsky, Yakov A., Konopleva, Nataly G., Yakovenchuk, Victor N., Bazai, Ayya V., Goryainov, Pavel M., Ivanyuk, Gregory Yu. (2016) 3D mineralogical mapping of the Kovdor phoscorite–carbonatite complex (Russia) Mineralium Deposita, 51 (1) 131-149 doi:10.1007/s00126-015-0594-z | Journal (article/letter/editorial) | | Heidelberg 2015 Abstract The Kovdor baddeleyite–apatite–magnetite deposit in the Kovdor phoscorite–carbonatite...gradually at the expense of Si, Fe, and Mg from early apatite–forsterite phoscorite (margins of the pipe) through...The Kovdor massif is a central-type, multiphase volcano– plutonic complex that intruded/erupted through...photographic overview of the modern Kovdor baddeleyite–apatite–magnetite open pit is shown in Fig. 2. The outer...zone has calcite-rich rocks and magnetite and apatite as common minerals. Numerous carbonatite veins |  | | Thesis/Dissertation | | de Oldoinyo Lengai, Kerimasi o Tinderet (Campeny et al., 2015). En ...ejemplo, los Koru Beds de Tinderet en Kenya, el complejo de Rockeskyll...Campbell, L.S., Henderson, P. (1997): Apatite paragenesis in the Bayan Obo REE–Nb–... from Homa Mountain, western Kenya: a reinterpretation. Geological ... lava clasts of the Tinderet foothills, western Kenya: a study of |  | | Report (issue) | | IRELAND ISRAEL ITALY JAMAICA JAPAN JORDAN KAZAKHSTAN KENYA KOREA, REPUBLIC OF KUWAIT KYRGYZSTAN LAO PEOPLE’S...China (2), Egypt, Ghana, Islamic Republic of Iran, Kenya, Madagascar, Mongolia, the Philippines, Ukraine...FROM SELECTED ALKALINE CARBONATITE COMPLEXES OF KENYA ..................................................characterizing and evaluating national uranium resources; Kenya focused on development of analytical techniques;...INVESTIGATORS FOR CRP IAEA Institute Member State City Kenya University of Nairobi Nairobi Title Multimodal |  | | Journal (article/letter/editorial) | | phosphates. Among phosphates, in addition to common apatite, two new mineral species were identified: mixed-anion...Parascandolaite New (no name) Sulfates Anhydrite Phosphates Apatite Prs BaFl KMgF3 (Ba,Sr)AlF5 P2 + BaFl SiO2 +...Lengai volcano in Tanzania (‘lengaites’; Kresten 1983), and within the Kerimasi and Tinderet carbonatites... Wenzel T, Vennemann T, Mark G (2014) Tinderet volcano, Kenya: an altered natrocarbonatite locality? |  | | Journal (article/letter/editorial) | | in modern natrocarbonatites of Oldoinyo Lengai volcano (e.g., Dawson, 1962; Fleischer et al., 1975; Gittins...(Stoppa et al, 2009), Kerimasi (Zaitsev, 2010b), and Tinderet CE P (Zaitsev et al., 2013) volcanoes and from...calciocarbonatite and jacupirangite from Kerimasi volcano (Guzmics et al. 2011; Káldos et al. 2015). Another...kimberlitic (e.g., olivine, phlogopite, calcite, apatite, oxides) (Kamenetsky et al., NU 2008, 2012; Chakhmouradian...nyerereite from natrocarbonatites of Oldoinyo Lengai volcano (Fig. 3b). The analysed nyerereite plots the same |  | | Journal (article/letter/editorial) | | Tübingen, Germany ABSTRACT Halogen abundances in apatite, biotite, amphibole, titanite, and other halogen-rich...peralkaline Tamazeght complex (Morocco) are presented. Apatite, biotite, and amphibole show the highest F contents...fluorite (restricted in syenites). The Cl contents of apatite, biotite, and amphibole are highest in the intermediate...in the evolved rocks, although Cl contents of apatite, biotite, and amphibole are low. We suggest that...resulting in the subsequent crystallization of Cl-poor apatite, biotite, and amphibole. Late-magmatic eudialyte |  | | Journal (article/letter/editorial) | | the c~bon~~s from ejec~menta of the Laacher See volcano analyzed by TAYLORet aE. (1967) suggests a mectn...in two belts, an eastern belt along the Uganda-Kenya border, and a western one along the Uganda-Congo...TJXE KA~O~DO R~~wA, HOMA MOUXT~, RIFT, WESTERN KENYA: AXD THE RURI Gaoaa Six carbonatite complexes...South Ruri, Homa Hountain, Buru Hill and the Tinderet Volcano. Samples were collected from Rangwa, North...com@ex is the core of the eroded Kisingiri shield volcano, and consists of a central plug of carbonatite |  | | Report (issue) | | ..................................... Igneous apatite....................................................................................... Igneous apatite..................................................in Thailand........................... Igneous apatite potential in Ethiopia............................bat guano deposits suggests the possibility of apatite deposition in solution channels developed along... developed in Thailand where a number of such apatite deposits exist, is given in Appendix D. The same |  | | Book (edition) | | field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although his final results...1955), L. J. Fick and C. van der Heyde (1959). Kenya: B. H. Baker (1953), G. L. Coetzee and C...biotite sOvite (biotite, 10 to 40 per cent), apatite sdvite (apatite, 10 to 30 per cent), see Table 1-2. The...Tanganyika. b. In generally unaltered rocks: Ravalli County, Montana, and Verity, British Columbia. Similar...Sphene, ilmenite, rutile, Ti-magnetite, zircon, apatite, pyrochlore Volatile elements: F, Cl, H,O H |  | | Book | | A, No. 2, 61. 1938 (with Harvey, C. O.). An apatite rock from Dumfriesshire, Great Britain. Summ. Progr...northern portion in northern Tanzania, western Kenya, and eastern Uganda where the Nyanzian System, composed...through Rhodesia, Mozambique, Malawi, Tanzania and Kenya, and is characterised by ages of 400-700 m.y. (Cahen...rejuvenated antique sequences: the Nyanzian of Kenya (Sanders, 1965); the Bulawayan of Rhodesia (Johnson...and the Mozambique Belt in western Kenya. Bull. geol. Surv. Kenya, 7. ScureIner, G. D. L., and VAN NIgkERK |
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