 | | Journal (article/letter/editorial) | | geochemistry of the carbonatite and syenite complex of Lueshe (N.E. Zaire) H. v. MARAVIC& G. MORTEANI I/triOS...syenite complex of Lueshe (N E. Zaire). Lithos 13, 159-170. Oslo. ISSN 0024-4937. The Lueshe carbonatite is...I vol. % are typical. The carbonat;,ies ot the Lueshe alkal;ne complex are mainly s6vites with some alvikites...Berlin 12. Tyskland. The carbonatite complex of Lueshe like those of Monbadio, Bingo, Kirumba, Kibvy,...(Fig. I). Some of these carbonatites, particularly Lueshe and Bingo, are of economic interest on account |  | | Journal (article/letter/editorial) | | Pyrochlore from weathered carbonatite at Lueshe, Zaire F. WALl.,C. T. WILLIAMS,A. R. WOOIJ.EY Department...pyrochlore in the laterite above carbonatite at Lueshe, NE Zaire, has been made in order to determine...variations. Pyrochlore in fresh carbonatite at Lueshe is close to an ideal formula of (Ca,Na)2Nb206(OH...worldwide. As a result weathered pyrochlore at Lueshe has a large apparent A cation deficiency with A...remain stable. Abundant kalipyrochlore is unique to Lueshe and is thought to be related to the abundance of |  | | Report (issue) | | Parisite-(Ce), synchysite-(Y), cordylite-(Ce), eudidymite, aegirine, microcline. Distribution: From Narssârssuk...complex, near Field, British Columbia; in the Desmont mine, Wilberforce, Ontario. In the USA, in the Sheep...Jacupiranga mine, São Paulo, Brazil. At the Lueshe carbonatite, 150 km north of Goma, Kivu Province, Congo...Congo (Zaire). Name: From the Greek for curved, in allusion to the characteristically curved crystals |  | | Journal (article/letter/editorial) | | most commonly thought of as a process whereby aegirine and riebeckitic amphiboles are formed in the host...generally understood the progressive formation of aegirine and riebeckite amphibole in the host rocks (usually...by Verwoerd, 1966) and metasedimentary schists (Lueshe in Zaire (Meyer & Bethune, 1958)) but the mineralogy...C. to spend a year at the University of Toronto. Dr C. J. Sullivan and Kennco Explorations Canada Ltd...Bethune, P. de. 1958. La carbonatite Lueshe (Kivu). Bull. Congo Beige Serv. geol. 8, fasc 5. Morey, G |  | | Report (issue) | | cordylite, fluorite, rhodochrosite, polylithionite, aegirine, microcline, albite (Narssârssuk, Greenland);...Peninsula. From the Lueshe carbonatite, 150 km north of Goma, Kivu Province, Congo (Zaire). In Canada |  | Chakhmouradian, Anton R., Reguir, Ekaterina P., Kressall, Ryan D., Crozier, Jeremy, Pisiak, Laura K., Sidhu, Ravinder, Yang, Panseok (2015) Carbonatite-hosted niobium deposit at Aley, northern British Columbia (Canada): Mineralogy, geochemistry and petrogenesis. Ore Geology Reviews, 64. 642-666 doi:10.1016/j.oregeorev.2014.04.020 | Journal (article/letter/editorial) | | lesser extent, amphibole. When the passive margin of North America became the zone of plate convergence in...covering the Precambrian basement rocks of the North American craton (Price, 1994 and references therein)...Neoproterozoic to Jurassic on the passive margin of the North American protocontinent and in the adjacent ocean...20% Nb2O5 cutoff Foreland belt (rifted margin of North America) ~370 Ma Dolomite carbonatites (calcite...Disputed between Société Lueshe, Rutshuru Dist., North Kivu, Democratic Minière du Kivu (Somikivu) and Krall |  | | Book (edition) | | localities as inclusions in the limestone”’ (italics mine). Actually, the first published description of...‘‘fine-grained but crystalline,” (5) that they were 1] thank Dr. G. R. Udas for bringing this historic description...carbonatite dikes cutting the kimberlite of the Premier mine (p. 542) he classed as magmatic, but 1 Bowen admitted...G. B. Du Bois (1956, 1959), B. C. King (1949). Congo (Belgian): A. Meyer and P. de Bethune (1958, 1960)...country rock around alkalic complexes; up to 25% aegirine-augite, minimum of 52% StOz: Mafic-metasomatites |  | | Journal (article/letter/editorial) | | hydrous silicates in the Kvaløya lamproite dyke, North Norway Kåre Kullerud & Dmitry Zozulya & Erling J...The mineral was first described from the Bayan-Obo mine in Inner Mongolia, China. On the type locality,...alkaline granosyenites in association with albite, aegirine, alkali amphibole, and sulfides (Semenov et al...Buryatia, Russia (Koneva et al. 2008), Lueshe, Democratic Republic of Congo (Wall et al. 1996), and Haast, New...been reported from a carbonatite in Lueshe (Democratic Republic of Congo)(Wall et al. 1996). Baotite from |  | | Journal (article/letter/editorial) | | Similar supergene occurrences occur at Lueshe and Bingo (D.R. Congo), Mabounié (Gabon), Sukulu (Uganda)...date, all major operating and former (Oka, Fen, Lueshe) Nb mines have been developed in primary carbonatites...only operating Nb mine in under-saturated peralkaline syenites is the Karnasurt mine (Kremenetsky et al...units presents in carbonatites e.g. the Loolekop mine at Phalaborwa (Fig. 250 of Woolley, 2001), Catalão-I...(Parsons, 1961; Pell, 1996) and a low grade niobium mine was operated by St. Lawrence Columbium at Oka (Quebec) |  | | Journal (article/letter/editorial) | | meteoric alterations of the Lueshe carbonatite complex žDemocratic Republic of Congo / identified by a REE...whole-rock samples of the Lueshe carbonatite complex ŽNE of Democratic Republic of Congo.. The fresh and hydrothermally...fluorhydric-nitric solution ŽHF q HNO 3 .. The Lueshe carbonatite complex contains a suite of REE-carriers...Meteoric weathering; Rare-earth elements; Republic of Congo 1. Introduction Among the chemical characteristics...large quantities of Fig. 1. Geological map of the Lueshe complex Žmodified after Maravic et al., 1989.. |  | | Journal (article/letter/editorial) | | associated with brannerite, uraninite, albite, aegirine, alkali amphiboles, and magnetite." The locality...have been named. May be a mixture (,,gummite',). Dr. clifford Frondel points out that the optical data...rnuNe ANDANDREMovnn. Les carbonatitesde la Lueshe(Kivu, Congo belge)Compt.rend 245, 1132-1134(1956). The |  | | Journal (article/letter/editorial) | | carbonatites at Argor, Carillon Dam, Chilwa Island, Fen, Lueshe, Oka, Mbeya, Meech Lake and Verity. Primary features...e veinlets and low A-ion totals (Carillon Dam, Lueshe, Myeba). K EY WORDS : zoned crystals, carbonatites...to Ce4+ in some pyrochlore from laterite (e.g. Lueshe and Mbeya of this paper; see below) it is not possible...pyrochlore pyrochlore,uranpyrochlore Mineral Lueshe, Dem. Rep. of Congo San Vicente, Cape Verde Is. Kovdor,...7), ceriopyrochlore (Lueshe specimen BM 1966/232 – rim) and kalipyrochlore (Lueshe specimen BM 1966/232 |  | Zozulya, D. R., Savchenko, E. E., Kullerud, K., Ravna, E. K., Lyalina, L. M. (2010) Unique accessory Ti-Ba-P mineralization in the Kvalöya ultrapotassic dike, Northern Norway. Geology of Ore Deposits, 52 (8) 843-851 doi:10.1134/s1075701510080167 | Journal (article/letter/editorial) | | Some samples contain single grains of Tibearing aegirine, magnesian mica with an extremely low Al2O3 content...0.10 0.00 100.46 0.00 99.40 0.41 0.18 92.79 Aegirine 52.83 1.73 0.06 Mica 57.40 0.32 1.10 0.05 23...deposit (Semenov et al., 1961), carbonatites of Lueshe (Wall et al., 1996) and the Haast region (Cooper...al., 1961) NT522 1.53 101.39 Carbonatite, Lueshe (Wall et al., 1996) Carbonatite, Haast (Coo per...dikes, Bohemian pluton (Nemec, 1987) Carbonatite, Lueshe (Wall et al., 1996) Carbonatite, Haast (Coo per |  | ROSA, M, CONCEICAO, H, MACAMBIRA, M, GALARZA, M, CUNHA, M, MENEZES, R, MARINHO, M, FILHO, B, RIOS, D (2007) Neoproterozoic anorogenic magmatism in the Southern Bahia Alkaline Province of NE Brazil: U–Pb and Pb–Pb ages of the blue sodalite syenites. Lithos, 97 (1) 88-97 doi:10.1016/j.lithos.2006.12.011 | Journal (article/letter/editorial) | | intrusion is formed of granites with biotite and aegirine, which have between 10% and 30% of alkali diorite...locally. Rounded dark clots are composed of biotite, aegirine, potassian taramite, sulphide minerals and calcite...calcite. Discontinuous thin (b2 cm wide) layers of aegirine are thought to be products of percolation of late...spaces filled by sodalite, titanite, microcline, aegirine and calcite (Fujimori, 1978; Rosa et al., 2005b)...followed by microcline, titanite, calcite and aegirine. Magnetite, ilmenite, sulphide minerals and analcime |  | | Journal (article/letter/editorial) | | development of a network of thin dykelets lled with aegirine or, rarely blue-green magnesio-riebeckite. A complete...carbonatites elsewhere in Africa (e.g. Lueshe, Democratic Republic of the Congo), the Buru carbonatite centre...weathered crusts. It also has been reported from the Lueshe carbonatite complex, where it was observed to be...and encouragement given by Prof. A.E. Fallick and Dr A. Boyce at the Scottish Universities Research and... LANTHANIDE MINERALIZATION, BURU CARBONATITE Lueshe, Kivu/NE Zaõ¨re: Petrographic and geochemical studies |  | | Journal (article/letter/editorial) | | fenites are obtainable, one, at Curral do Touril north of Monchique village, shows features similar to...Reaction (1) above can be dismissed both because aegirine is absent and Fe3+ shows no correlation. Reaction...cordierite, andalusite, corundum and biotite. (ii) Lueshe, Congo This carbonatite complex intrudes amphibolitefacies...sodium is shown by the formation of adinoles, aegirine-microclinealbite rocks and feldspathic assemblages...mention of metasomatic feldspar, the rarity of aegirine (perhaps the most characteristic mineral of fenitisatioa |  | | Journal (article/letter/editorial) | | itself by the development of Na- and Kamphiboles, aegirine-augite, K-feldspar, albite, perthite, mesoperthite...13.5 21.5 27.8 Okorusu 8.2 0.2 2.7 2.7 32.7 4.9 Lueshe 4.4 2.8 64.6 0.8 17.9 0.8 Sarfartôq 78.5 1.0 1...Si Fe 3+ ±Ca ±Al Na K Na and K amphibole Aegirine-augite K-feldspar Mesoperthite Antiperthite Albite...carbonatite contact, as recorded by disappearance of aegirine and Na-amphibole over the distance of approximately...Greenland carbonatites (Bell and Simonetti 2010) North American carbonatites (Bell and Simonetti 2010) |  | Moore, K.R., Wall, F., Divaev, F.K., Savatenkov, V.M. (2009) Mingling of carbonate and silicate magmas under turbulent flow conditions: Evidence from rock textures and mineral chemistry in sub-volcanic carbonatite dykes, Chagatai, Uzbekistan. Lithos, 110 (1) 65-82 doi:10.1016/j.lithos.2008.11.013 | Journal (article/letter/editorial) | | disequilibrium. Quench crystals of apatite and aegirine, and anhedral baryte, which formed after corrosion...Namibia) and occurs in calcite carbonatite at Lueshe, D.R. Congo where incorporation and metasomatic alteration...Pyrite Garnet (pyralspite series) Melilite Augite Aegirine Biotite Muscovite Chlorite Albite Orthoclase Quartz...5%) are garnet of the pyralspite series, augite, aegirine, melilite, biotite and chlorite. Pyroxenes are...chlorite (d, sample 4). (Fig. 3a–d). Pyroxene (aegirine) and baryte are common to both assemblages, and |  | Sun, Zhenghao, Qin, Kezhang, Mao, Yajing, Tang, Dongmei, Wang, Fangyue, Evans, Noreen J., Zhou, Qifeng (2022) Mineral Chemistry of Pyrochlore Supergroup Minerals from the Boziguoer Nb-Ta-Zr-Rb-REE Deposit, NW China: Implications for Nb Enrichment by Alkaline Magma Differentiation. Minerals, 12 (7) 785 doi:10.3390/min12070785 | Journal (article/letter/editorial) | | (albite, K-feldspar, quartz, arfvedsonite and aegirine). The Nb in the deposit is mainly hosted in pyrochlore...and the northern margin of the Tarim block, from north to south. The Central Tianshan block is an ancient...in the Tarim north rim (modified from [60,61]). alkaline felsic rocks in the Tarim north rim (modified...syenite, syenite, syenite,aegirine aegirinesyenite syeniteand andaegirine aegirine nepheline syenite. These...representative of theof type. is located 43 km north Baicheng county, county, east of the alkaline most |  | Guowu, Li, Guangming, Yang, Fude, Lu, Ming, Xiong, Xiangkun, Ge, Baoming, Pan, de Fourestier, Jeffrey (2016) Fluorcalciopyrochlore, A New Mineral Species From Bayan Obo, Inner Mongolia, P.R. China. The Canadian Mineralogist, 54 (5) 1285-1291 doi:10.3749/canmin.1500042 | Journal (article/letter/editorial) | | ore deposit. Associated minerals are dolomite, aegirine, riebeckite, diopside, fluorite, baryte, phlogopite...sequence deposited in easttrending grabens along the north edge of the Archean crystalline Sino-Korean craton...minerals occurs in dolomite, alteration wallrock (aegirine feldspar rock), and in rocks from the late hydrothermal...associated minerals found in the carbonate rocks are aegirine, riebeckite, diopside, fluorite, baryte, phlogopite...Williams, CNMNC Chairman, for his help and advice, and Dr. Adam Pieczka for his advice. This study was supported |  | Conceicao, H., de Lourdes da Silva Rosa, M., Moura, C. A.V., Macambira, M. J. B., Galarza, M. A., Rios, D. C., Marinho, M. M., Menezes, R. C. L., Cunha, M. P. (2009) PETROLOGY OF THE NEOPROTEROZOIC ITARANTIM NEPHELINE SYENITE BATHOLITH, SAO FRANCISCO CRATON, BAHIA, BRAZIL. The Canadian Mineralogist, 47 (6) 1527-1550 doi:10.3749/canmin.47.6.1527 | Journal (article/letter/editorial) | | ornamental stones, 8a: nepheline syenite with aegirine, Serra Rancho Queimado facies, 8b: biotite nepheline...crystals have aegirine-augite (Ae22.1Hd39.5Di38.3) borders, and worm-shaped domains of aegirine-augite (Ae33...carbonate minerals. Aegirine–augite crystals are subhedral. The proportion of the aegirine component increases...tholeiitic rocks in the SBAP. In the western part of the Congo Craton, where a continuation of the Araçuaí belt...the Serra do Felíssimo facies, such as biotite, aegirine-augite, hastingsite–taramite, nepheline and Na-enriched |  | | Book | | View of the Oldoinyo Lengai stratovolcano from the north. The volcano is rising 2000 m above its surroundings...Oldoinyo Lengai, Tanzania. Lithos 91: 173–190 Sherrod DR, Magigita MM, Kwelwa S (2013) Geologic map of Oldonyo.... . . . . . . . . . . . . . . . . Route 1: The North Coast . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . 4.2 Road-Cutting North of Hartung (close to the Coastal Road) . . . . .... . . . . . . . . . . . . . . . . 4.11 Old Iron Mine at Stavsätt Farm in Släda . . . . . . . . . 4.12 |  | | Journal (article/letter/editorial) | | from quartz fenites with only a few needles of aegirine augite to syenitic fenites, shift the isotope...Simonetti & Bell, 1994; Spitskop: Harmer, 1992; Lueshe: Kramm et al., 1997). The petrology, the geochemistry...plains (samples OL16) and gullies (samples OL18) north of the 1998 KRAMM AND SINDERN FENITES FROM OLDOINYO...evidence is an intensive veining consisting of aegirine augite-rich mineral associations (sample OL17/19)...formation of irregular schlieren and patches of aegirine augite (sample OL16/ 4). This type of alteration |  | | Journal (article/letter/editorial) | | gneisses, which occur in the north-west-south-east escarpment to the north-east. The Ufipa gneisses and...and other metamorphic groups further to the north and east belong to the Ubendian System. The area has...crystals of alkali amphibole, a few small crystals of aegirine, and accessory apatite, zircon, and iron ore....phosphate mineral, 4 %; apatite, 3 %; rutile, 2 %; aegirine, 0.5 %; iron ore, 0.5 %; and zircon, trace. TABLEI...described by Miyashiro and Iwasaki (1957), and also the Lueshe alkalic amphibole (Jans a n d d e Bethune, 1968) |  | | Journal (article/letter/editorial) | | Saint Honoré (Canada) and Lueshe (Zaire – now Democratic Republic of Congo) supply about 90% of world...the Khibina mas sif are represented by apatiteaegirinephlogopite rocks (phoscorites in our interpretation...in comparison with other phoscorite minerals (aegirine, phlogopite) has a large mineralmelt distribution...Carbonatites from Mantle to 514 ZAITSEV et al. Mine: the Key Example of the Kola Alkaline Province,...Nasraoui, M., Pyrochlore from Weathered Carbonatite at Lueshe, Zaire, Miner. Mag., 1996, vol. 60, pp. 731–750 |
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Lueshe Mine, Bwito, Rutshuru Territory, North Kivu, DR Congo