 | | 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) | | IN WEATHERED PYROCHLORE-GROUP MINERALS FROM THE LUESHE AND ARAXÁ (BARREIRO) CARBONATITES BY 57Fe MÖSSBAUER...Nb ore deposits in laterite: Lueshe in the Democratic Republic of Congo, and Araxá in Brazil. In contrast...oxidation state in the kalipyrochlore sample from Lueshe. Spectra of both samples are consistent with the...coordinated by 6 O2– is observed in both cases. In the Lueshe sample, it is also coordinated by 5 O2– and 1 OH–...gisements latéritiques à Nb, celui de Lueshe en République Démocratique du Congo et celui d’Araxá au Brésil, l’idée |  | | Catalog/List | | Italy. massive, green 2 variety ADAMITE: Ojuela Mine, Mapimi, Durango, Mexico. crystals ADAMITE,variety...Index, Washington, USA. crystals ALBITE: Jeffrey Mine, Asbestos, Quobcc, Canada. crystals ALBITE: St....good crystal sections AS ,'\BOVE ALGOOONITE:Calumot Mine, Michigan, USA. massive ALL'\NITE: . Quadeville...in feldspar /\LLEGHi'.NYITE:/\llcgheny County, North Carolina, USA, crudG crystals to massive ALLOPHANE:Juanita...1-:incrva .i'l Mine, Cavo-ln-Rock, Illinois, USA. good crystals ALT/1ITE: Hilltop Mine, Organ Mountain |  | Torró, L., Villanova, C., Castillo, M., Campeny, M., Gonçalves, A. O., Melgarejo, J. C. (2012) Niobium and rare earth minerals from the Virulundo carbonatite, Namibe, Angola. Mineralogical Magazine, 76 (2) 393-409 doi:10.1180/minmag.2012.076.2.08 | Journal (article/letter/editorial) | | the hydrothermal veins; fluorite, baryte and strontianite are common in some of the veins (Fig. 6a,b)...consist of euhedral crystals of dolomite, quartz, strontianite and fluorite which do not exceed a few millimetres...intergrown with quartz and dolomite or ankerite. Strontianite tends to be euhedral and occurs as pseudohexagonal...in some hydrothermal veins, where it replaces strontianite (Fig. 6c). Niobium-rich rutile (Nb2O5 in the...infilling. (a) Vein infilled with dolomite (Dol) and strontianite (Str) cutting a carbonatite (righthand side |  | 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) | | Sr-, Ba- and Pb-pyrochlores include hematite, strontianite, barite and REE-fluocarbonates and phosphates...set of faults oriented NE–SW that cut the Angola–Congo craton (Issa Filho et al., 1991). Different types...(Ap2) veined by calcite (Cal2), barite (Brt) and strontianite (Srt) in dolomitized carbonatite. b) Pyrochlore-II...sequence including kutnohorite (Kut), followed by strontianite (Str), barite (Brt), rhabdophane-(La) (Rbd)...193 Fig. 5. (continued). infilling consist of strontianite (SrCO3), barite (BaSO4), bastnäsite-(La) [LaCO3F] |  | 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)...) around a “core” of alkalic silicate rock: Lueshe, Congo, and Chishanya, Southern Rhodesia. In some cases |  | Rampilova, Maria, Doroshkevich, Anna, Viladkar, Shrinivas, Zubakova, Elizaveta (2021) Mineralogy of Dolomite Carbonatites of Sevathur Complex, Tamil Nadu, India. Minerals, 11 (4) 355 doi:10.3390/min11040355 | Journal (article/letter/editorial) | | 39 61.11 b.d. 5.28 b.d. b.d. b.d. b.d. 70.18 Strontianite 0.42 1.18 b.d. b.d. 0.58 2.24 23.28 16.17 35...87 barytocalcite; on 3 oxygens in calcite and strontianite; on 39 oxygens in benstonite and on 15 oxygens...multiple spots on SEM/EDS 3 oxygens in calcite and strontianite; on 39 oxygens in benstonite and on 15 oxygens...contains small inclusions of norsethite, baryte, strontianite, barytocalcite, benstonite and calcioburbankite...CaO and FeO, and in some cases SrO (Table 1). Strontianite (SrCO3 ) associates with barytocalcite (Figure |  | | Journal (article/letter/editorial) | | Kola Peninsula (Subbotin and Men'shikov, 1987) and Lueshe, Zaire (Mitchell, 1996). Most other descriptions...ridge surrounded by lowlands, and from the east and north-east, by the Segozero Lake. The ridge is forested...respectively). Accessory phases include biotite, strontianite and complex intergrowths of minerals. The latter...mineral compositions: Khibina loparite (LREE), Lueshe lueshite (Na, Nb), Magnet Cove perovskite (Ca,...number of carbonatite localities including the Lueshe complex, Zaire (Wall et al., 1996), Mt. Weld, Australia |  | | Journal (article/letter/editorial) | | baritocalcite, calcite, ilmenite, hydrozircon, baotite, strontianite, allanite, quartz and pyrite. The absence of...from hydrothermal quartz veins of the Bayan-Obo mine of Mongolia, China (Peng, 1959; Semenov et al.,...dikes from US, Russia, Democratic Republic of Congo and New Zealand (Heinrich et al., 1962; Koneva et...hydrous silicates in the Kvaloya lamproite dyke, North Norway. Minerlogy and Petrology, 105, 145–156. Kullerud...tectonic setting of a lamproite dyke in Kvaløya, North Norway. Lithos, 126,278– 289. Kullerud, K (1995) |  | | Journal (article/letter/editorial) | | mineral enriched in Nb, catapleiite, columbite, strontianite, ancylite-(Ce), and Nb-bearing rutile (“ilmenorutile”)...ziconolite-group mineral, (Anc) ancylite-(Ce), (Str) strontianite, (Mgt) magnetite, (Clb) columbite, (Ilrt) Nb-rutile...Chuktukon massif, Chadobets upland, Krasnoyarsk territory, in Shchelochoni magmatizm Zemli, (Alkaline Magmatism)... Pyrochlores from the Lueshe carbonatite complex (democratic republic of congo): a geochemical record...Nasraoui, M., Pyrochlore from weathered carbonatite at Lueshe, Zaire, Mineral. Mag., 1996, vol. 60, pp. 731–750 |  | | Journal (article/letter/editorial) | | of the central African mega-unit, made up of the Congo, Kasai and Angolan cratons (Goodwin, 1996). The...minerals that occur in minor amounts include strontianite, REE-bearing carbonates (mainly synchysite-(Ce))...values close to 0 wt.% have also been found in the Lueshe carbonatites (Nasraoui and Bilal, 2000). Betafite...particular Dr C.T. Williams for the assistance received at the Natural History Museum in London. Dr Xavier...(2000) Pyrochlores from the Lueshe carbonatite complex (Democratic Republic of Congo): a geochemical record |  | Vrublevskii, V.V., Bukharova, O.V., Nebera, T.S., Sveshnikova, V.L. (2019) Composition and origin of rare-metal (Nb–Ta, REE) and sulfide mineralization in magnesiocarbonatites from the Yenisei Ridge, Central Siberia. Ore Geology Reviews, 111. 102949 doi:10.1016/j.oregeorev.2019.102949 | Journal (article/letter/editorial) | | REE-fluorocarbonates, Sr-REE carbonates, and strontianite formed after primary ferrodolomite and calcite...carbonates. Sr-carbonates are ancylite-(Cе) and strontianite which occur as small segregations, mainly in...other occurrences (Table 12). The coexisting strontianite likewise shows variations of SrO (~61–69 wt...thoughtful and encouraging reviews by Dr. Shuan-Hong Zhang and Dr. Jindrich Kynicky are gratefully acknowledged...Palaeoproterozoic Fengzhen carbonatite from the North China block. International Geology Review 58 (15) |  | Thompson, R., Smith, P., Gibson, S., Mattey, D., Dickin, A. (2002) Ankerite carbonatite from Swartbooisdrif, Namibia: the first evidence for magmatic ferrocarbonatite. Contributions to Mineralogy and Petrology, 143 (3) 377-396 doi:10.1007/s00410-002-0350-0 | Journal (article/letter/editorial) | | Parsons SrO, plus abundant, tiny exsolved strontianite grains. Magnetite is close to pure Fe3O4. Pyrochlore...Center 1991). GPS co-ordinates for the Swartbooisdrif Mine are 1720¢26.0¢¢ south and 1346¢59.5¢¢ east (using...underlain by Archaean-Proterozoic basement of the Congo craton. Carbonatites and syenites are emplaced in...carbonatites, during the final stabilisation of the Congo craton. Small quarries at Swartbooisdrif expose...despite also containing abundant <10-lm exsolved strontianite grains (cf. Dawson et al. 1996). Crystals lack |  | Broom-Fendley, Sam, Brady, Aoife E., Horstwood, Matthew S.A., Woolley, Alan R., Mtegha, James, Wall, Frances, Dawes, Will, Gunn, Gus (2017) Geology, geochemistry and geochronology of the Songwe Hill carbonatite, Malawi. Journal of African Earth Sciences, 134. 10-23 doi:10.1016/j.jafrearsci.2017.05.020 | Journal (article/letter/editorial) | | episode of late Precambrian alkaline magmatism in the north and south of the country (Bloomfield, 1968, 1970;...from the surrounding plain. The hill abuts the north-western flank of Mauze, a large, oval, nepheline...6 4 km in area and 800 m high. To the north-west and north-east are two, lower-lying, hills: Chenga...dolerite. This unit is most prominent on Chenga Hill, north-west of the main Songwe Hill intrusion (Fig. 2A)...euhedral synchysite-(Ce), baryte, and anhedral strontianite are disseminated throughout the carbonatite |  | | Journal (article/letter/editorial) | | Carbonatite Complex, Canada (Sage 1988); complexes Lueshe, DR Congo, Newania, India, Kangankunde, Malawi, and...carbonatites are hematite, calcite, barite, celestite, strontianite, sericite, and quartz. The sulfide minerals...Celestite Strontianite Opal Malachite Sericite Azurite Quartz Ancylite-Ce* Jarosite Strontianite Fe-copiapite...Abbreviations: * -based on fluid inclusion data strontianite, marcasite, supergene fluorite, wulfenite, and...Rock material from the cores of exploratory wells, mine dumps, and outcrops associated with the Karasug |  | | Journal (article/letter/editorial) | | rather confused terminology. ~) Authors's address: Dr. P. KR~STEN, Geological Survey of Sweden, Box 670...resulted in that e. g., the "plutonic" core of Lueshe (v. MARAWC & MORTEANI, 1980) has to be termed "beforsite"... 1962). Siderite, rhodochrosite, magnesite, strontianite and rare earth carbonate minerals are found...geochemistry of the earbonatite and syenite complex of Lueshe (N. E. Zaire). - - Lithos 13, 159--170, 1980. MITCHELL |  | Amores-Casals, , Melgarejo, , Bambi, , Gonçalves, , Morais, , Manuel, , Neto, , Costanzo, , Molist, (2019) Lamprophyre-Carbonatite Magma Mingling and Subsolidus Processes as Key Controls on Critical Element Concentration in Carbonatites—The Bonga Complex (Angola) Minerals, 9 (10) 601 doi:10.3390/min9100601 | Journal (article/letter/editorial) | | related to the Lucapa graben, a megastructure cutting Congo, Kasai and Angola Cratons and reactivated during...Kimberlite occurrences are concentrated at the north-eastern part of the graben whereas carbonatites...diameter) in the proximities of the complex, 3 km north or 1 km west of the plug (Figure 1). These intrusions...associated with late dolomite, ankerite and strontianite; type V and late quartz are very scarce. During...association formed by dolomite, ankerite, quartz, strontianite and REE carbonates strongly replaces the outer |  | Clark, A. M., Smith, D. A., Symes, R. F., Tandy, P. C., Hart, A. D. (1995) Catalogue of Type Mineral Specimens in the Natural History Museum, London - With an appendix listing mineral species and varieties originally described from the British Isles. Natural History Museum, London. | Book | | the description of the species nominates Socrates mine, Sonoma County, California, as the type locality... Aerugite (Neotype) BM 1963,00481 South Terras mine, St-Stephen-in-Brannel, Cornwall, England R.J. Davis...34. Afwillite (Cotype) BM 1925,00080 Dutoitspan mine, Kimberley, South Africa J. Parry and F. E. Wright...277. Agardite (Cotype) BM 1978,00024 Bou Skour mine, Bou Azzer, Jbel Sarho, Morocco J.E. Dietrich, M...199. Apachite (Cotype) BM 1980, 00532 Christmas Mine, Gila Co., Arizona, USA F.P. Cesbron & S.A. Williams |  | | Catalog/List | | ___ 2x2£3 ___ - -----~ - ~014_ _ 88 ADAMITE Ojuela Mine, Mapimi, Mexico 69 ALUMOHYDROCALCITE South Bay,...- - --··---- - - - - - · . 767 AJOITE Christmas Mine, Gila County, Arizona USA 17 ANAL CITE Talisker...1009 ANDALUSITE Ultevis,North Sweden 501 ALLOPHANE New East Whcal Russell mine, Devon ,England variety...217 ANDORITE San Jose Mine, Oruro, Bolivia 1129 ■ ALMANDINE Brnstad iron Mine near Arendnl ,Norway Pure...Bcnallt Minc,Llcyn. Wales 1036 ALSTONITE Fnllowlielcl Mine, Northumberland White masses in malrix wilh micro |  | | Catalog/List | | £10 2x2 £15 Ix! £3 lx2 £6 I · 88 ADAMITE Ojuela Mine, Mapimi, Mexico Colourless to yellow small crystals...£10 2x3 £15 Na Ca SiO F 7fJ 7 ■ AJOITE Christmas Mine, Gila County, Arizona USA Blue veinlets in matrix...5cm £4 no/2 feldspar 37 ANCYLITE Ce Dark Star Mine,Ravalli County, Montana U.S.A Rich pinkish fine...£7.50 Ag Sb 501 ALLOPHANE New East Wheal Russell mine, Devon ,England grey bleby small botryoidal with... lx2 £3 2x2 £6 2x3 £10 1009 ANDALUSITE Ultevis,North Sweden variety VIRIDINE (Mangan rich variety) Olive |  | | Catalog/List | | massive with minor Celsian and Bementite from Benallt Mine, Lleyn, Wales, (Recently tested by XRD) lxl £4 lx2...£15 £6 88 ADAMITE Ojuela Mine, Mapimi, Mexico 1036 ALSTONITE Fallowfield Mine, Northumberland Colourless...x2 £ 1.50 2x2 £3 Al SO/4 767 ■ AJOITE Christmas Mine, Gila County, Arizona USA 14 ALUMINITE Railway cutting...~-------·-·-- ·· -·· 1077 ■■ ALLOPHANE Hawkswood Mine, Cornwall 933 ANATASE Hingston Quarry,Cornwall Black...Kola Russia 501 ALLOPHANE New East Wheal Russell mine, Devon ,England grey bleby small botryoidal with |  | | Catalog/List | | ----·-·- ---- ·- -- 1129 ALMANDINE Brastad iron Mine near Arendal ,Norway 87 ■ BERYL Evje area . South... . --- .. ------- - -· 1009 ANDALUSITE Ultevis,North Sweden 1099 CATAPLEIITE Bratthagcn, near Larvik...---·-··----·------ ·- - ---27 ANTHOPHYLLITE Kaveltorp Mine Sweden 1008 CHRYSOBERYL Kolsva. Vastmanland Sweden...--~----· ·---·-------- -- -62 COBAL TITE Bolidcn Mine, North Sweden 1003 ARSENIOPLEITE Sjogruvan,Ridd arhyllan...2x3 £25 Ampibole 1140 ERYTHRITE Sl-a1tterud Cobalt Mine. Vikersund Norway 970 MAGNESIOHASTINGSITE Langban |  | LEE, MI JUNG, LEE, JONG IK, GARCIA, DANIEL, MOUTTE, JAQUES, WILLIAMS, C. TERRY, WALL, FRANCES, KIM, YEADONG (2006) Pyrochlore chemistry from the Sokli phoscorite-carbonatite complex, Finland: Implications for the genesis of phoscorite and carbonatite association. GEOCHEMICAL JOURNAL, 40 (1) 1-13 doi:10.2343/geochemj.40.1 | Journal (article/letter/editorial) | | Fe and Mn, and SrBa-LREE carbonates (calcian strontianite, alstonite and Table 1. (continued) Sample...altered parts is also reported from the Bingo and Lueshe pyrochlores (Williams et al., 1997). Comparison... Acknowledgments—The authors would like to thank Dr. Heikki Vartiainen (Ministry of Trade and Industry...Helsinki), Professor Seppo Gehör (University of Oulu) and Dr. Robert Perander (Kemira Oy Company, Finland) for...during the field work and sampling in the drill cores. Dr. L. N. Kogarko and an anonymous reviewer are acknowledged |  | 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) | | orogenic belts, China [11,17–19]). In the Russian territory, such complexes are found in the Altai-Sayan fold...columbite, fersmite, apatite, ilmenite, zircon, strontianite, and other accessory minerals. The largest Vishnevogorsk...miaskite-syenite body (“saddle deposit”), lying 50 m north of the Vishnevogorsk massif, and is composed of...Baidashevskoe (Nb), 10—Ishkulskoe (Nb), 11—Ilmenskoe, 97 mine (Nb and REE), 12—Khaldikhinskoe, 13—Sungulskoe....9—Baidashevskoe (Nb), 10—Ishkulskoe (Nb), 11—Ilmenskoe, 97 mine (Nb and The REE),largest 12—Khaldikhinskoe, 13—Sungulskoe |
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