 | | 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...accessory perovskite and ‘plumbopyrochlore’; nyerereite is present as inclusions in the perovskite. At least...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...textures and contain inclusions of minerals such as perovskite, pyrite and pyrrhotite. Titaniferous augite is...minerals such as fluorapatite, magnetite, cuspidine, perovskite, pyrochlore, baddeleyite, periclase, brucite |  | 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) | | minerals of the ultramafic association, such as CaSi-perovskite (Brenker et al. 2007) and ferropericlase (Kaminsky...structure of calcite in grains associated with CaSi-perovskite was proven by both Raman spectra and X-ray diffraction...Perovskites are represented by CaSiperovskite and CaTi-perovskite; to date no bridgmanite has been observed. Within...New (no name) New (no name) Oxides CaSi-perovskite CaTi-perovskite Periclase Orrthorhombic MgO P1 P2 Na4Mg3(PO4)2(P2O7)...lines are shown in red decomposition of CaSi-perovskite during the ascent of the host diamond to the |  | | Journal (article/letter/editorial) | | volcanos are known in the East African rift system in Kenya, Uganda, and Tanzania. Although some of these were... 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...Bukusu, and Tororo), and also the large Elgon volcano, whose volcanic structure is preserved. Quaternary |  | | 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...kimberlite emplacement at ~365 Ma for both bodies: perovskite U-Pb by Kinny et al. (1997) and phlogopite Rb-Sr...phlogopite, tetraferriphlogopite, calcite, dolomite, perovskite, Al-spinel, ilmenite, rutile, magnetite, pyrrhotite |  | 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) | | The Kovdor massif is a central-type, multiphase volcano– plutonic complex that intruded/erupted through...cancrinite, mesolite, åkermanite, monticellite, perovskite, shortite, and nyerereite occur near the contact...nepheline amount. Accessory minerals are titanite, perovskite, zirconolite, ancylite-(Ce), barite, lueshite...relation to the Ol Doinyo Lengai, Kerimasi, and Tinderet volcanic carbonatite complexes (Hay 1983; Gittins...RL (1983) Natrocarbonatite tephra of Kerimasi volcano, Tanzania. G e o l o g y 11 : 5 9 9 – 6 0 2 . d |  | | Journal (article/letter/editorial) | | [(Na,K,Cax)2–x(CO3)], known from Ol Doinyo Lengai volcano (Tanzania). A refinement to the IUGS chemical classification...Mountain, Kenya (Clarke 4 G. J. SIMANDL AND S. PARADIS and Roberts 1986); Tinderet, Kenya (Deans and...Lengai, Tanzania, which is considered an active volcano). Frequency plots of carbonatites with well-established...documented carbonatite provinces: (a) East Africa (Kenya, Uganda, Tanzania, and one occurrence in Zambia);...Alnö, Sweden (Eckermann 1966); and Homa Mountain, Kenya (Le Bas 1977). In such models, the cone sheets farthest |  | | 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...Tanganyika. b. In generally unaltered rocks: Ravalli County, Montana, and Verity, British Columbia. Similar...eucolite; RE phosphates (britholite, belovite), perovskite Sphene, ilmenite, rutile, Ti-magnetite, zircon..."Fourche a N . 8 Bauxite gc Cove Murfreesboro Volcano ¢ Se A a a os A ARKANSAS | = basalt— |  | | Journal (article/letter/editorial) | | with minor amounts of clinopyroxene, garnet, perovskite, and apatite, the latter generally occurring...(2014) Halogen (F,Cl, and Br) at Oldoinyo Lengai volcano (Tanzania): Effects of magmatic differentiation...T., VENNEMANN, T., & MARKL, G. (2013) Tinderet volcano, Kenya: an altered natrocarbonatite locality? |  | | 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 |
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