@booklet {5960,
	title = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.},
	year = {1989},
	note = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.}
}
@booklet {5962,
	title = {SHERBACK, N.P., ARTEMENKO, G.V. and BARNITSKY, Ye.N. 1989. Geochronoligical scale of the Precambrian of the Ukrainian Shield. Naukova Dumka, Kiev, 144 pp.},
	year = {1989},
	note = {SHERBACK, N.P., ARTEMENKO, G.V. and BARNITSKY, Ye.N. 1989. Geochronoligical scale of the Precambrian of the Ukrainian Shield. Naukova Dumka, Kiev, 144 pp.}
}
@booklet {5968,
	title = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.},
	year = {1989},
	note = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.}
}
@booklet {5974,
	title = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.},
	year = {1989},
	note = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.}
}
@booklet {5993,
	title = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.},
	year = {1989},
	note = {*KRIVDIK, S.G. and TKACHUK, V.I. 1989. Eudialyte-bearing agpaitic phonolites and dike nepheline syenites in the October intrusion, Ukrainian shield. Geochemistry International, 26(3): 54-60.}
}
@booklet {6241,
	title = {*RODYGINA, V.G. and GRINEV, O.M. 1989. Nepheline-pyroxene-pyrrhotite and pyroxene-pyrrhotite rocks of the Kiya-Shaltyr pluton. International Geology Review, 31: 72-8.},
	year = {1989},
	note = {*RODYGINA, V.G. and GRINEV, O.M. 1989. Nepheline-pyroxene-pyrrhotite and pyroxene-pyrrhotite rocks of the Kiya-Shaltyr pluton. International Geology Review, 31: 72-8.}
}
@booklet {6244,
	title = {VRUBLEVSKY, V.V., BABANSKY, A.D., TRONEVA, N.V. and ELISAFENKO, V.N. 1989. Conditions of formation of carbonatite minerals in Kuznetsk Alatau. Izvestiya Akademii Nauk SSSR, Seriya Geologiya, 12: 65-81.},
	year = {1989},
	note = {VRUBLEVSKY, V.V., BABANSKY, A.D., TRONEVA, N.V. and ELISAFENKO, V.N. 1989. Conditions of formation of carbonatite minerals in Kuznetsk Alatau. Izvestiya Akademii Nauk SSSR, Seriya Geologiya, 12: 65-81.}
}
@booklet {6284,
	title = {RUSANOV, M.S., ARZAMASTSEV, A.A. and SHEVCHENKO, S.A. 1989. Ivanovsky volcanic-intrusive complex - new appearance of alkaline magmatism on the Kola Peninsula. Akademii Nauk SSSR, Kola Branch, Apatity. 29 pp.},
	year = {1989},
	note = {RUSANOV, M.S., ARZAMASTSEV, A.A. and SHEVCHENKO, S.A. 1989. Ivanovsky volcanic-intrusive complex - new appearance of alkaline magmatism on the Kola Peninsula. Akademii Nauk SSSR, Kola Branch, Apatity. 29 pp.}
}
@booklet {6328,
	title = {*FRENKEL, M.Y. and KHAPAYEV, V.V. 1989. A convective cumulation model of crystallization differentiation of the melt and formation of the apatite deposits in the Khibiny ijolite-urtite intrusion. Geochemistry International, 27(4): 101-12.},
	year = {1989},
	note = {*FRENKEL, M.Y. and KHAPAYEV, V.V. 1989. A convective cumulation model of crystallization differentiation of the melt and formation of the apatite deposits in the Khibiny ijolite-urtite intrusion. Geochemistry International, 27(4): 101-12.}
}
@booklet {6331,
	title = {*ILYIN, A.V. 1989. Apatite deposits in the Khibiny and Kovdor alkaline igneous complexes, Kola Peninsula, north-western USSR. In A.J.G. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 485-93. Ca},
	year = {1989},
	note = {*ILYIN, A.V. 1989. Apatite deposits in the Khibiny and Kovdor alkaline igneous complexes, Kola Peninsula, north-western USSR. In A.J.G. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 485-93. Cambridge University Press. Cambridge.}
}
@booklet {6380,
	title = {*ILYIN, A.V. 1989. Apatite deposits in the Khibiny and Kovdor alkaline igneous complexes, Kola Peninsula, north-western USSR. In A.J.G. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 485-93. Ca},
	year = {1989},
	note = {*ILYIN, A.V. 1989. Apatite deposits in the Khibiny and Kovdor alkaline igneous complexes, Kola Peninsula, north-western USSR. In A.J.G. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 485-93. Cambridge University Press. Cambridge.}
}
@booklet {6390,
	title = {*SMIRNOV, V.I. 1989. European part of the U.S.S.R. In F.W. Dunning, P. Garrard, H.W. Haslam and R.A. Ixer (eds). Mineral deposits of Europe. 4/5: Southwest and eastern Europe, with Iceland. 279-407. The Institution of Mining and Metallurgy and The Mineral},
	year = {1989},
	note = {*SMIRNOV, V.I. 1989. European part of the U.S.S.R. In F.W. Dunning, P. Garrard, H.W. Haslam and R.A. Ixer (eds). Mineral deposits of Europe. 4/5: Southwest and eastern Europe, with Iceland. 279-407. The Institution of Mining and Metallurgy and The Mineralogical Society, London.}
}
@booklet {6569,
	title = {VASILENKO, V.B., KRYUKOV, L.G. and KUZNETSOVA, L.G. 1989. Petrochemical types of alkaline-ultrabasic rocks of the Chadobetsky uplift. Geologiya i Geofizika. Novosibirsk, 8: 46-54.},
	year = {1989},
	note = {VASILENKO, V.B., KRYUKOV, L.G. and KUZNETSOVA, L.G. 1989. Petrochemical types of alkaline-ultrabasic rocks of the Chadobetsky uplift. Geologiya i Geofizika. Novosibirsk, 8: 46-54.}
}
@booklet {6694,
	title = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.},
	year = {1989},
	note = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.}
}
@booklet {6708,
	title = {SHCHADENKOV, E.M., ORLOVA, M.P. and BORISOV, A.B. 1989. Pyroxenite and shonkinite from Maly Murun massif are the intrusive equivalent of lamproite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva. Moskva, 118 (6): 28-37.},
	year = {1989},
	note = {SHCHADENKOV, E.M., ORLOVA, M.P. and BORISOV, A.B. 1989. Pyroxenite and shonkinite from Maly Murun massif are the intrusive equivalent of lamproite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva. Moskva, 118 (6): 28-37.}
}
@booklet {6719,
	title = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.},
	year = {1989},
	note = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.}
}
@booklet {6724,
	title = {KOCHETKOV, A.V., PAHOMOV, V.N. and POPOV, A.B. 1989. Magmatism and metasomatism at the Ryabinovy ore-bearing alkaline massif (central Aldan). In V.I. Sotnikov and A.A. Obolensky (eds) Magmatism of the copper-molybdenum ore assemblages. 79-110. Nauka, Novo},
	year = {1989},
	note = {KOCHETKOV, A.V., PAHOMOV, V.N. and POPOV, A.B. 1989. Magmatism and metasomatism at the Ryabinovy ore-bearing alkaline massif (central Aldan). In V.I. Sotnikov and A.A. Obolensky (eds) Magmatism of the copper-molybdenum ore assemblages. 79-110. Nauka, Novosibirsk.}
}
@booklet {6728,
	title = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.},
	year = {1989},
	note = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.}
}
@booklet {6747,
	title = {KRASILNIKOVA, N.A. and ILYIN, A.V. 1989. Igneous Proterozoic-Cambrian phosphate resources in eastern Siberia, USSR. In A.J.G. Notholt, R.P. Sheldon and D.F. Davidson (eds). Phosphate deposits of the world. 2. Phosphate rock resources. 510-7. Cambridge Uni},
	year = {1989},
	note = {KRASILNIKOVA, N.A. and ILYIN, A.V. 1989. Igneous Proterozoic-Cambrian phosphate resources in eastern Siberia, USSR. In A.J.G. Notholt, R.P. Sheldon and D.F. Davidson (eds). Phosphate deposits of the world. 2. Phosphate rock resources. 510-7. Cambridge University Press, Cambridge.}
}
@booklet {6755,
	title = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.},
	year = {1989},
	note = {MAKHOTKIN, I.l., ARAKEL{\textquoteright}YANZ, M.M. and VLADYKIN N.V. 1989. On the age of the lamproites of the Aldan Province. Doklady Akademii Nauk SSSR, 306: 703-7.}
}
@booklet {6778,
	title = {ARDONTSEV, S.N. and MALICH, K.N. 1989a. Geodynamic model of the formation of the massifs of the Konder complex. Geologiya I Geofizika. Novosibirsk, 7:{\quotesinglbase} 27-33.},
	year = {1989},
	note = {ARDONTSEV, S.N. and MALICH, K.N. 1989a. Geodynamic model of the formation of the massifs of the Konder complex. Geologiya I Geofizika. Novosibirsk, 7:{\quotesinglbase} 27-33.}
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@booklet {6779,
	title = {ARDONTSEV, S.N. and MALICH, K.N. 1989b. Physicochemical conditions of iron-titanium oxide formation in rocks of the Konder alkalic ultramafic pluton. Transactions (Doklady) of the USSR Academy of Sciences, Earth Science Sections, 296: 225-7.},
	year = {1989},
	note = {ARDONTSEV, S.N. and MALICH, K.N. 1989b. Physicochemical conditions of iron-titanium oxide formation in rocks of the Konder alkalic ultramafic pluton. Transactions (Doklady) of the USSR Academy of Sciences, Earth Science Sections, 296: 225-7.}
}
@booklet {6788,
	title = {ARDONTSEV, S.N. and MALICH, K.N. 1989a. Geodynamic model of the formation of the massifs of the Konder complex. Geologiya I Geofizika. Novosibirsk, 7:{\quotesinglbase} 27-33.},
	year = {1989},
	note = {ARDONTSEV, S.N. and MALICH, K.N. 1989a. Geodynamic model of the formation of the massifs of the Konder complex. Geologiya I Geofizika. Novosibirsk, 7:{\quotesinglbase} 27-33.}
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@booklet {6829,
	title = {*EGOROV [YEGEROV], L.S. 1989. Form, structure and development of the Guli ultramafic-alkalic and carbonatite pluton. International Geology Review , 31: 1226-39.},
	year = {1989},
	note = {*EGOROV [YEGEROV], L.S. 1989. Form, structure and development of the Guli ultramafic-alkalic and carbonatite pluton. International Geology Review , 31: 1226-39.}
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@booklet {6887,
	title = {LE MAITRE, R.W., BATEMAN, P., DUDEK, A., KELLER, J., LAMEYRE, J., LE BAS, M.J., SABINE, P.A., SCHMID, R., SORENSEN, H., STRECKEISEN, A., WOOLLEY, A.R. and ZANETTIN, B. 1989. A classification of igneous rocks and glossary of terms. Recommendations of the I},
	year = {1989},
	note = {LE MAITRE, R.W., BATEMAN, P., DUDEK, A., KELLER, J., LAMEYRE, J., LE BAS, M.J., SABINE, P.A., SCHMID, R., SORENSEN, H., STRECKEISEN, A., WOOLLEY, A.R. and ZANETTIN, B. 1989. A classification of igneous rocks and glossary of terms. Recommendations of the International Union of Geological Sciences Subcommission on the Systematics of Igneous Rocks. Blackwell, Oxford. 193 pp.TCHOUA, F. 1971. Le volcanisme trombolien de la plaine de Tombel (Cameroun). Annales de la Faculte des Sciences, Universit{\'e} F{\'e}d{\'e}rale du Cameroun. Yaound{\'e}, 7-8: 53-78.}
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@booklet {7054,
	title = {BLOOMER, S.H., CURTIS, P.C. and KARSON, J.A. 1989. Geochemical variation of Quaternary basaltic volcanics in the Turkana Rift, northern Kenya. Journal of African Earth Sciences, 8: 511-32.DUNKLEY, P.N., SMITH, M., ALLEN, D.J. and DARLING, W.G. 1993. The g},
	year = {1989},
	note = {BLOOMER, S.H., CURTIS, P.C. and KARSON, J.A. 1989. Geochemical variation of Quaternary basaltic volcanics in the Turkana Rift, northern Kenya. Journal of African Earth Sciences, 8: 511-32.DUNKLEY, P.N., SMITH, M., ALLEN, D.J. and DARLING, W.G. 1993. The geothermal activity and geology of the northern sector of the Kenya rift valley. British Geological Survey, Research Report. International Series SC/93/1: 1-185.}
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@booklet {7086,
	title = {HACKMAN, B.D., CHARSLEY, T.J., KAGASI, J., KEY, R.M., SIAMBI, W.S. and WILKINSON, A.F. 1989. Geology of the Isiolo area. Report, Mines and Geology Department, Nairobi, 103: 1-88.},
	year = {1989},
	note = {HACKMAN, B.D., CHARSLEY, T.J., KAGASI, J., KEY, R.M., SIAMBI, W.S. and WILKINSON, A.F. 1989. Geology of the Isiolo area. Report, Mines and Geology Department, Nairobi, 103: 1-88.}
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@booklet {7241,
	title = {BERRAHMA, M. and DELALOYE, M. 1989. Donnees geochronologiques nouvelles sur le massif volcanique du Siroua (Anti-Atlas, Maroc). Journal of African Earth Sciences, 9: 651-6.BERRAHMA, M. and HERNANDEZ, J. 1985. Nouvelles donnees sur le volcanisme trachytiqu},
	year = {1989},
	note = {BERRAHMA, M. and DELALOYE, M. 1989. Donn{\'e}es g{\'e}ochronologiques nouvelles sur le massif volcanique du Siroua (Anti-Atlas, Maroc). Journal of African Earth Sciences, 9: 651-6.BERRAHMA, M. and HERNANDEZ, J. 1985. Nouvelles donn{\'e}es sur le volcanisme trachytique hyperalcalin du volcan du Siroua (anti-Atlas, Maroc). Comptes Rendus de l{\textquoteright}Acad{\'e}mie des Sciences. Paris, Serie II. 300: 863-8.CHOUBERT, G., CHARLOT, R., FAURE-MURET, A., HOTTINGER, L., MAR{\c C}AIS, J., TISSERANT, D. and VIDAL, P. 1968. Note pr{\'e}liminaire sur le volcanisme messinien (pontien) au Maroc. Comptes Rendus Hebdomadaires des S{\'e}ances de l{\textquoteright}Acad{\'e}mie des Sciences. Paris, 266D: 197-9.WAGNER, C., PARODI, G.C., SEMET, M., ROBERT, J.L., BERRAHMA, M. and VELDE, D. 1991. Crystal chemistry of narsarsukite. European Journal of Mineralogy, 3: 575-85.}
}
@booklet {7243,
	title = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.},
	year = {1989},
	note = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.}
}
@booklet {7250,
	title = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.DIXEY, F., SMITH, W.C. and BISSET, C.B. 1937. The Chilwa Series of southern Nyasaland. Bulletin, Nyasaland Geological Survey, 5: 1-82. (reprinted 1955)GARSON, M.S. and },
	year = {1989},
	note = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.DIXEY, F., SMITH, W.C. and BISSET, C.B. 1937. The Chilwa Series of southern Nyasaland. Bulletin, Nyasaland Geological Survey, 5: 1-82. (reprinted 1955)GARSON, M.S. and WALSHAW, R.D. 1969. The geology of the Mlanje area. Bulletin, Malawi Geological Survey, 21: 1-157.}
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@booklet {7252,
	title = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.COELHO, A.V.P. 1959a. Reconhecimentos petrograficos sumarios dos macicos da Lupata, Morrumbala, Chiperone-Derre e Milange. Boletim. Servicos de Geologia e Minas, Provin},
	year = {1989},
	note = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.COELHO, A.V.P. 1959a. Reconhecimentos petrogr{\'a}ficos sum{\'a}rios dos maci{\c c}os da Lupata, Morrumbala, Chiperone-Derre e Milange. Boletim. Servi{\c c}os de Geologia e Minas, Prov{\'\i}ncia de Mo{\c c}ambique, 26: 1-47.}
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@booklet {7260,
	title = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.DIAS, M.de B. 1961. Geologia do Monte Muambe. Boletim, Servicos de Geologia e Minas, Provincia de Mocambique, 27: 37-64.DIXEY, F., SMITH, W.C. and BISSET, C.B. 1937. Th},
	year = {1989},
	note = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.DIAS, M.de B. 1961. Geologia do Monte Muambe. Boletim, Servi{\c c}os de Geologia e Minas, Provincia de Mo{\c c}ambique, 27: 37-64.DIXEY, F., SMITH, W.C. and BISSET, C.B. 1937. The Chilwa Series of southern Nyasaland. Bulletin, Nyasaland Geological Survey, 5: 1-82. (reprinted 1955)}
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@booklet {7262,
	title = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.COELHO, A.V.P. 1959a. Reconhecimentos petrograficos sumarios dos macicos da Lupata, Morrumbala, Chiperone-Derre e Milange. Boletim. Servicos de Geologia e Minas, Provin},
	year = {1989},
	note = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.COELHO, A.V.P. 1959a. Reconhecimentos petrogr{\'a}ficos sum{\'a}rios dos maci{\c c}os da Lupata, Morrumbala, Chiperone-Derre e Milange. Boletim. Servi{\c c}os de Geologia e Minas, Prov{\'\i}ncia de Mo{\c c}ambique, 26: 1-47.}
}
@booklet {7270,
	title = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.GITTINS, J. 1966. Summaries and bibliographies of carbonatite complexes. In O.F. Tuttle and J. Gittins (eds), Carbonatites, 417-570. John Wiley, New York.VAIL, J.R. 196},
	year = {1989},
	note = {CILEK, V.G. 1989. Industrial minerals of Mozambique. Geological Survey, Prague. 326 pp.GITTINS, J. 1966. Summaries and bibliographies of carbonatite complexes. In O.F. Tuttle and J. Gittins (eds), Carbonatites, 417-570. John Wiley, New York.VAIL, J.R. 1962. Mount Xiluvo vent, Mozambique. Annual Report, Research Institute of African Geology, University of Leeds, 6: 16-7.}
}
@booklet {7332,
	title = {BROWN, W.L., MOREAU, C. and DEMAIFFE, D. 1989. An anorthosite suite in a ring-complex: crystallization and emplacement of an anorogenic type from Abontorok, Air, Niger. Journal of Petrology, 30: 1501-40.HUSCH, J.M. and MOREAU, C. 1982. Geology and major e},
	year = {1989},
	note = {BROWN, W.L., MOREAU, C. and DEMAIFFE, D. 1989. An anorthosite suite in a ring-complex: crystallization and emplacement of an anorogenic type from Abontorok, Air, Niger. Journal of Petrology, 30: 1501-40.HUSCH, J.M. and MOREAU, C. 1982. Geology and major element geochemistry of anorthositic rocks associated with Paleozoic hypabyssal ring complexes, Air massif, Niger, West Africa. Journal of Volcanology and Geothermal Research, 14: 47-66.KARCHE, J.-P. and MOREAU, C. 1977. Note pr{\'e}liminaire sur le massif subvolcanique {\`a} structure annulaire d{\textquoteright}Abontorok (A{\"\i}r-Niger). Comptes Rendus Hebdomadaires des S{\'e}ances de l{\textquoteright}Acad{\'e}mie des Sciences, Paris, 284D: 1259-62.MOREAU, C. 1987. Les complexes anorog{\'e}niques {\`a} suite anorthositique de l{\textquoteright}A{\"\i}r (Niger): contribution {\`a} l{\textquoteright}{\'e}tude des anorthosites. Bulletin de la Soci{\'e}t{\'e} G{\'e}ologique de France, 8(3): 115-22.}
}
@booklet {7406,
	title = {LAVREAU, J., BUYAGU, S., LIEGEOIS, J.P. and NAVEZ, J. 1989. Geochemical evidence for a non-alkalic origin for the carbonatic bodies of Kibuye, Rwanda. Journal of African Earth Sciences, 9: 335-40.},
	year = {1989},
	note = {LAVREAU, J., BUYAGU, S., LIEGEOIS, J.P. and NAVEZ, J. 1989. Geochemical evidence for a non-alkalic origin for the carbonatic bodies of Kibuye, Rwanda. Journal of African Earth Sciences, 9: 335-40.}
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@booklet {7446,
	title = {SCOGINGS, A.J. 1989. Peralkaline granitoid and associated alkaline mafic gneisses northwest of Eshowe, Natal. South African Journal of Geology, 92: 339-51.},
	year = {1989},
	note = {SCOGINGS, A.J. 1989. Peralkaline granitoid and associated alkaline mafic gneisses northwest of Eshowe, Natal. South African Journal of Geology, 92: 339-51.}
}
@booklet {7532,
	title = {DAVIDSON, J.P. and WILSON, I.R. 1989. Evolution of an alkali basalt-trachyte suite from Jebel Marra volcano, Sudan, through assimilation and fractional crystallization. Earth and Planetary Science Letters, 95: 141-60.},
	year = {1989},
	note = {DAVIDSON, J.P. and WILSON, I.R. 1989. Evolution of an alkali basalt-trachyte suite from Jebel Marra volcano, Sudan, through assimilation and fractional crystallization. Earth and Planetary Science Letters, 95: 141-60.}
}
@booklet {7584,
	title = {BELL, K. (ed.) 1989. Carbonatites: genesis and evolution, Unwin Hyman, London. 618 pp.BELL, K. and DAWSON, J.B. 1995. Nd and Sr isotope systematics of the active carbonatite volcano, Oldoinyo Lengai. In K. Bell and J. Keller (eds), Carbonatite volcanism, },
	year = {1989},
	note = {BELL, K. (ed.) 1989. Carbonatites: genesis and evolution, Unwin Hyman, London. 618 pp.BELL, K. and DAWSON, J.B. 1995. Nd and Sr isotope systematics of the active carbonatite volcano, Oldoinyo Lengai. In K. Bell and J. Keller (eds), Carbonatite volcanism, 100-12. Springer-Verlag, Berlin.BELL, K. and KELLER, J. (eds) 1995. Carbonatite volcanism: Oldoinyo Lengai and the petrogenesis of natrocarbonatites. Springer-Verlag, Berlin. 210 pp.BELL, K. and SIMONETTI, A. 1996. Carbonatite magmatism and plume activity: implications from the Nd, Pb and Sr isotope systematics of Oldoinyo Lengai. Journal of Petrology, 37: 1321-39. BELL, K., DAWSON, J.B. and FARQUHAR, R.M. 1973. Strontium isotope studies of alkalic rocks: the active carbonatite volcano Oldoinyo Lengai. Bulletin of the Geological Society of America, 84: 1019-30.CHURCH, A.A. and JONES, A.P. 1995. Silicate-carbonate immiscibility at Oldoinyo Lengai. Journal of Petrology, 36: 869-89.DAWSON, J.B. 1962a. Sodium carbonate lavas from Oldoinyo Lengai. Nature, London, 195: 1075-6.DAWSON, J.B. 1962b. The geology of Oldoinyo Lengai. Bulletin Volcanologique, 24: 349-87. DAWSON, J.B. 1966. Oldoinyo Lengai - an active volcano with sodium carbonatite flows. In. O.F. Tuttle and J. Gittins (eds), Carbonatites, 155-68. Wiley, New York.DAWSON, J.B. 1989. Sodium carbonatite extrusions from Oldoinyo Lengai, Tanzania: implications for carbonatite complex genesis. In Carbonatites: genesis and evolution. K. Bell (ed.), 255-77. Unwin Hyman, London.J.B. Dawson, pers. comm., 1999; DAWSON, J.B. and HILL, P.G. 1998. Mineral chemistry of a peralkaline combeite-lamprophyllite nephelinite from Oldoinyo Lengai, Tanzania. Mineralogical Magazine, 62: 179-96.DAWSON, J.B. and HILL, P.G. 1998. Mineral chemistry of a peralkaline combeite-lamprophyllite nephelinite from Oldoinyo Lengai, Tanzania. Mineralogical Magazine, 62: 179-96.DAWSON, J.B., SMITH, J.V. and STEELE, I.M. 1989. Combeite (Na2.33Ca1.74others0.13)Si3O9 from Oldoinyo Lengai, Tanzania. Journal of Geology, 97: 365-72.DAWSON, J.B., PINKERTON, H., NORTON, G.E. and PYLE, D.M. 1990. Physicochemical properties of alkali carbonatite lavas: data from the 1988 eruption of Oldoinyo Lengai, Tanzania. Geology, 18: 260-3.DAWSON, J.B., SMITH, J.V. and STEELE, I.M. 1992. 1966 ash eruption of the carbonatite volcano, Oldoinyo Lengai: mineralogy of lapilli, and mixing of silicate and carbonate magmas. Mineralogical Magazine, 56: 1-16.DAWSON, J.B., PINKERTON, H., PYLE, D.M. and NYAMWERU, C. 1994. June 1993 eruption of Oldoinyo Lengai, Tanzania: exceptionally viscous and large carbonatite flows, and evidence for co-existing silicate and carbonate magmas. Geology, 22: 799-802.DAWSON, J.B., KELLER, J. and NYAMWERU, C. 1995a. Historic and recent eruptive activity of Oldoinyo Lengai. In K. Bell and J. Keller (eds), Carbonatite volcanism, 4-22. Springer-Verlag, Berlin.DAWSON, J.B., SMITH, J.V. and STEELE, I.M. 1995b. Petrology and mineral chemistry of plutonic igneous xenoliths from the carbonatite volcano, Oldoinyo Lengai, Tanzania. Journal of Petrology, 36: 797-826.DAWSON, J.B., PINKERTON, H., NORTON, G.E., PYLE, D.M., BROWNING, P., JACKSON, D. and FALLICK, A.E. 1995c. Petrology and geochemistry of Oldoinyo Lengai lavas extruded in November 1988: magma source, ascent and crystallization. In K. Bell and J. Keller (eds), Carbonatite volcanism, 47-69. Springer-Verlag, Berlin.DONALDSON, C.H., DAWSON, J.B., KANARIS-SOTIRIOU, R., BATCHELOR, R.A. and WALSH, N.J. 1987. The silicate lavas of Oldoinyo Lengai, Tanzania. Neues Jahrbuch fur Mineralogie Abhandlungen, 156: 247-79.M. GENGE, pers. comm., 1999; GITTINS, J. 1988a. Comment on "Ra-Th disequilibrium systematics: timescale of carbonatite magma formation at Oldoinyo Lengai volcano, Tanzania". Geochimica et Cosmochimica Acta, 52: 937.GITTINS, J. 1988b. Partial melting of fenitized crustal xenoliths in the Oldoinyo Lengai carbonatite volcano, Tanzania: discussion. American Mineralogist, 73: 1465-7.GITTINS, J. 1989. The origin and evolution of carbonatite magmas. In K. Bell (ed.) Carbonatites: genesis and evolution. 580-600. Unwin Hyman, London.GITTINS, J. and MCKIE, D. 1980. Alkalic carbonatite magmas: Oldoinyo Lengai and its wider applicability. Lithos, 13: 213-5.GUEST, N.J., JAMES, T.C., PICKERING, R. and DAWSON, J.B. 1961. Angata Salei. Geological Survey of Tanganyika, Quarter Degree Sheet, 39.HAY, R.L. and ROEDER, R.J. 1978. Calcretes of Olduvai Gorge and the Ndolanya Beds of northern Tanzania. Sedimentology, 25: 649-73.HEINRICH, F.W. 1966. The geology of carbonatites. Rand McNally, Chicago, 608 pp.KELLER, J. and HOEFS, J. 1995. Stable isotope characteristics of recent natrocarbonatites from Oldoinyo Lengai. In K. Bell and J. Keller (eds), Carbonatite volcanism, 113-23. Springer-Verlag, Berlin.KELLER, J. and KRAFFT, M. 1990. Effusive natrocarbonatite activity of Oldoinyo Lengai, June 1988. Bulletin of Volcanology, 52: 629-45.KJARSGAARD, B.A., HAMILTON, D.L. and PETERSON, T.D. 1995. Peralkaline nephelinite/carbonatite liquid immiscibility: comparison of phase compositions in experiments and natural lavas from Oldoinyo Lengai. In K. Bell and J. Keller (eds), Carbonatite volcanism, 163-00-90. Springer-Verlag, Berlin.KRAFFT, M. and KELLER, J. 1989. Temperature measurements in carbonatite lava lakes and flows from Oldoinyo Lengai, Tanzania. Science, 245: 168-70.MACINTYRE, R.M., MITCHELL, J.G. and DAWSON, J.B. 1974. Age of fault movements in Tanzanian sector of East African rift system. Nature, London, 247: 354-6.MARTIN, R.F. and MOROGAN, V. 1988. Partial melting of fenitized crustal xenoliths in the Oldoinyo Lengai carbonatite volcano, Tanzania: reply. American Mineralogist, 73: 1468-71.MCKIE, D. and FRANKIS, E.J. 1977. Nyerereite: a new volcanic carbonate mineral from Oldoinyo Lengai, Tanzania. Zeitschrift fur Kristallographie, 145: 73-95.MILTON, C. 1989. Oldoinyo Lengai natrocarbonatite lava: its history. Abstract: 28th International Geological Congress, Washington, 2: 441.MOROGAN, V. and MARTIN, R.F. 1985. Mineralogy and partial melting of fenitized crustal xenoliths in the Oldoinyo Lengai carbonatite volcano, Tanzania. American Mineralogist, 70: 1114-26.NYAMWERU, C. 1988. Activity of Oldoinyo Lengai, Tanzania, 1983-1987. Journal of African Earth Sciences, 7: 603-10.NYAMWERU, C. 1997. Changes in the crater of Oldoinyo Lengai: June 1993 - February 1997. Journal of African Earth Sciences, 25: 45-53.PETERSON, T.D. 1989a. Peralkaline nephelinites. I. Comparative petrology of Shombole and Oldoinyo L{\textquoteright}engai, East Africa. Contributions to Mineralogy and Petrology, 101: 458-78.PETERSON, T.D. 1989b. Peralkaline nephelinites. II. Low pressure fractionation and the hypersodic lavas of Oldoinyo L{\textquoteright}engai. Contributions to Mineralogy and Petrology, 102: 336-46.PETERSON, T.D. 1990. Petrology and genesis of natrocarbonatite. Contributions to Mineralogy and Petrology, 105: 143-55.PYLE, D.M. 1995. Decay series evidence for transfer and storage times of natrocarbonatite magma. In K. Bell and J. Keller (eds), Carbonatite volcanism, 124-36. Springer-Verlag, Berlin.SHEPPARD, S.M.F. and DAWSON, J.B. 1973. 13C/12C and D/H isotope variations in {\textquoteright}primary igneous carbonatites{\textquoteright}. Fortschritte der Mineralogie, 50: 128-9.TUTTLE, O.F. and GITTINS, J. (eds) 1966. Carbonatites. Wiley, New York. 591 pp.WILLIAMS, R.W., GILL, J.B. and BRULAND, K.W. 1986. Ra-Th disequilibria systematics: timescale of carbonatite magma formation at Oldoinyo Lengai volcano. Tanzania. Geochimica et Cosmochimica Acta, 50: 1249-59.WILLIAMS, R.W., GILL, J.B. and BRULAND, K.W. 1986. Ra-Th disequilibria systematics: timescale of carbonatite magma formation at Oldoinyo Lengai volcano. Tanzania. Geochimica et Cosmochimica Acta, 50: 1249-59.}
}
@booklet {7622,
	title = {BARKER, D.S. and NIXON, P.H. 1989. High-Ca, low-alkali carbonatite volcanism at Fort Portal, Uganda. Contributions to Mineralogy and Petrology, 103: 166-77.BELL, K and BLENKINSOP, J. 1987. Nd and Sr isotopic compositions of East African carbonatites: impl},
	year = {1989},
	note = {BARKER, D.S. and NIXON, P.H. 1989. High-Ca, low-alkali carbonatite volcanism at Fort Portal, Uganda. Contributions to Mineralogy and Petrology, 103: 166-77.BELL, K and BLENKINSOP, J. 1987. Nd and Sr isotopic compositions of East African carbonatites: implications for mantle heterogeneity. Geology, 15: 99-102.BELL, K. and POWELL, J.L. 1969. Strontium isotopic studies of alkalic rocks: the potassium-rich lavas of the Birunga and Toro-Ankole regions, east and central equatorial Africa. Journal of Petrology, 10: 536-72.DEINES, P. and GOLD, D.P. 1973. The isotopic composition of carbonatites and kimberlite carbonates and their bearing on the isotopic composition of deep-seated carbon. Geochimica et Cosmochimica Acta, 37: 1709-33.KAPUSTIN, Yu.L. and POLYAKOV, A. 1985. Carbonatite volcanoes of East Africa and the genesis of carbonatites. International Geology Review, 27: 434-48.NIXON, P.H. and HORNUNG, G. 1973. The carbonatite lavas and tuffs near Fort Portal, western Uganda. Overseas Geology and Mineral Resources, 41: 168-79.ROMANCHEV, B.P. and SOKOLOV, S.V. 1980. Liquation in the production and geochemistry of the rocks in carbonatite complexes. Geochemistry International, 16: 125-35.THOMAS, C.W. and NIXON, P.H. 1987. Lower crustal granulite xenoliths in carbonatite volcanoes of the Western Rift of East Africa. Mineralogical Magazine, 51: 621-33.VINOGRADOV, V.I., KRASNOV, A.A., KULESHOV, V.N. and SULERZHITSKIY, L.D. 1980. 13C/12C and 18O/16O ratio and 14C concentration in carbonatites of the Kaliango volcano east Africa. International Geology Review, 22: 51-7.}
}
@booklet {7669,
	title = {FERNANDES, T.R.C. 1989. Dorowa and Shawa: late Palaeozoic to Mesozoic carbonatite complexes in Zimbabwe. In. A.H.J. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 171-5. Cambridge University Pr},
	year = {1989},
	note = {FERNANDES, T.R.C. 1989. Dorowa and Shawa: late Palaeozoic to Mesozoic carbonatite complexes in Zimbabwe. In. A.H.J. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 171-5. Cambridge University Press, Cambridge.HARMER, R.E., LEE, C.A. and EGLINGTON, B.M. 1998. A deep source for carbonatite magmatism: evidence from the nephelinites and carbonatites of the Buhera district, SE Zimbabwe. Earth and Planetary Science Letters, 158: 131-42.JOHNSON, R.L. 1961. The geology of the Dorowa and Shawa carbonatite complexes, Southern Rhodesia. Transactions of the Geological Society of South Africa, 44: 101-45.JOHNSON, R.L. 1966. The Shawa and Dorowa Carbonatite complexes, Rhodesia. In O.F. Tuttle and J. Gittins (eds), Carbonatites. 205-24. John Wiley, New York.}
}
@booklet {7670,
	title = {FERNANDES, T.R.C. 1989. Dorowa and Shawa: late Palaeozoic to Mesozoic carbonatite complexes in Zimbabwe. In. A.H.J. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 171-5. Cambridge University Pr},
	year = {1989},
	note = {FERNANDES, T.R.C. 1989. Dorowa and Shawa: late Palaeozoic to Mesozoic carbonatite complexes in Zimbabwe. In. A.H.J. Notholt, R.P. Sheldon and D.F. Davidson (eds), Phosphate deposits of the world. 2. Phosphate rock resources. 171-5. Cambridge University Press, Cambridge.HARMER, R.E., LEE, C.A. and EGLINGTON, B.M. 1998. A deep source for carbonatite magmatism: evidence from the nephelinites and carbonatites of the Buhera district, SE Zimbabwe. Earth and Planetary Science Letters, 158: 131-42.JOHNSON, R.L. 1961. The geology of the Dorowa and Shawa carbonatite complexes, Southern Rhodesia. Transactions of the Geological Society of South Africa, 44: 101-45.JOHNSON, R.L. 1966. The Shawa and Dorowa Carbonatite complexes, Rhodesia. In O.F. Tuttle and J. Gittins (eds), Carbonatites. 205-24. John Wiley, New York.LEE, C.A. and REID, A.B. 1977. A gravity survey of the Shawa carbonatite complex, Rhodesia. Transactions of the Geological Society of South Africa, 80: 43-5.NICOLAYSEN, L.O., BURGER, A.J. and JOHNSON, R.L. 1962. The age of the Shawa carbonatite complex. Transactions of the Geological Society of South Africa, 65: 293-4.}
}
