 | | Journal (issue) | | maand worden specimens van hydropyrochloor van Lueshe, Congo aangeboden. Meer details hierover vind je elders...staat, waarvoor uiteraard onze excuses. Onze spreker, Dr. Ernst Burke, is geen "Noorderbuur", maar een ras-echte...vice-voorzitter was gedurende een paar jaren een Belg, namelijk Dr. FrĂ©dĂ©ric Hatert uit Luik. Wie aanwezig was op de...MINERAL HS XV, 2009 Themanummer : "Les minĂ©raux de la Mine des Farges, Ussel (CorrĂšze), France" - 84 pp. ï·...VielflĂ€chige Phantome in Fluoritkristalle (Okorusu mine, Namibia) 30-31 Perowskit im Steirisch-BĂŒrgenlĂ€ndischen |  | | Report (issue) | | Hydropyrochlore (H2O, )2Nb2(O, OH)6(H2O) Crystal Data: Cubic. Point Group: 4/m 3 2/m. As octahedra...[0.05] . Total [99.86] [99.89] 100.74 (1) Lueshe, Congo; original total given as 100.192%, corrected...Distribution: In the Lueshe carbonatite, 150 km north of Goma, Kivu Province, Congo (Zaire). Name: For...structural chemistry of kalipyrochlore, a âhydropyrochloreâ. Can. Mineral., 32, 415-420. (3) Atencio, |  | | Journal (article/letter/editorial) | | IN WEATHERED PYROCHLORE-GROUP MINERALS FROM THE LUESHE AND ARAXĂ (BARREIRO) CARBONATITES BY 57Fe MĂSSBAUER...Nb ore deposits in laterite: Lueshe in the Democratic Republic of Congo, and AraxĂĄ in Brazil. In contrast...oxidation state in the kalipyrochlore sample from Lueshe. Spectra of both samples are consistent with the...coordinated by 6 O2â is observed in both cases. In the Lueshe sample, it is also coordinated by 5 O2â and 1 OHâ...gisements latĂ©ritiques Ă Nb, celui de Lueshe en RĂ©publique DĂ©mocratique du Congo et celui dâAraxĂĄ au BrĂ©sil, lâidĂ©e |  | | Journal (issue) | | net NOVEMBERâDECEMBER 2022 Articles The Laohuan mine, Goncheng, Zhuang, Guangxi, China.................Type Mineralogy of the Democratic Republic of the Congo...................................................yellow pyromoprhite crystals, 9 cm, from the Laohuan mine, Gongcheng County, Guangxi, China. Federico Pezzotta... Hickox, Jr. Wally Mann Keith and Diane Brownlee Dr. Nikolas Golosow William B. (Bill) Wray Herb & Monika...w w.FineMineral.com Copper Pearl Handle Pit Ray Mine, Arizona 13 cm Copper has been an essential metal |  | | 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 |  | | Journal (article/letter/editorial) | | 8 , * ~ 0 . 2 , w = 0 and 0 . 2 < n < l ) from Lueshe, Zaire is a defect pyrochlore species whose A-site...refinement, powder pattern I. INTRODUCTION The Lueshe cancrinite syenite/carbonatite complex is located...pyrochlore subgroup, from the residual soils of the Lueshe carbonatite deposit. The calculated density is...London show that the kalipyrochlore from the Lueshe deposit (Kivu, Zaire) has a formula lying between the...in the 8a position, and we note that the "hydropyrochlore" name cannot be retained because the nomenclature |  | | Journal (article/letter/editorial) | | Fluorcalciopyrochlore, kenopyrochlore and hydropyrochlore were identified in chemical composition. Their...resulted in the appearance of kenopyrochlore and hydropyrochlore due to removal of Ca, Na and F, and input of...group, fluorcalciopyrochlore, kenopyrochlore, hydropyrochlore, carbona-tites, Belaya Zima massif DOI: 10...fluorkenopyrochlore, hydroxycalciopyrochlore hydropyrochlore 1 2 3 4 5 6 7 8 9 10 11 12 Nb2O5...fluorkenopyrochlore, hydroxycalciopyrochlore hydropyrochlore zone number of analysis Th + U + Pb Total |  | | Journal (article/letter/editorial) | | Similar supergene occurrences occur at Lueshe and Bingo (D.R. Congo), MabouniĂ© (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), CatalĂŁo-I...(Parsons, 1961; Pell, 1996) and a low grade niobium mine was operated by St. Lawrence Columbium at Oka (Quebec) |  | Atencio, D., Andrade, M. B., Christy, A. G., Giere, R., Kartashov, P. M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48 (3) 673-698 doi:10.3749/canmin.48.3.673 | Journal (article/letter/editorial) | | complete descriptions: oxycalciopyrochlore, hydropyrochlore, hydroxykenomicrolite, oxystannomicrolite,...only nine pyrochlore-supergroup minerals: hydropyrochlore, hydroxykenomicrolite, hydroxycalcioromĂ©ite...description complĂšte: oxycalciopyrochlore, hydropyrochlore, hydroxykĂ©nomicrolite, oxystannomicrolite,...neuf minĂ©raux du supergroupe du pyrochlore: hydropyrochlore, hydroxykĂ©nomicrolite, hydroxycalcioromĂ©ite...are equal, then only one prefix is applied (âhydropyrochloreâ, not âhydrohydropyrochloreâ). The only problem |  | TorrĂł, 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) | | ~47% Fe 2+ in secondary pyrochlore from the Lueshe mine in Congo. However, the total amount of iron, Fet...hydrothermal alteration were described at Lueshe mine in Congo by Nasraoui et al. (1999) and Nasraoui and...Uganda (Williams et al., 1997), the Lueshe carbonatite in Congo (Nasraoui et al., 1999; Nasraoui and...position of the pyrochlore in the lateritic proïŹle. At Lueshe, moreover, Ba- and Srbearing pyrochlore is found...da Universidade Agostinho Neto (Luanda, Angola). Dr Xavier Llovet assisted in the preparation of EPMA |  | 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 SociĂ©tĂ© Lueshe, Rutshuru Dist., North Kivu, Democratic MiniĂšre du Kivu (Somikivu) and Krall |  | Geisler, T., Berndt, J., Meyer, H.-W., Pollok, K., Putnis, A. (2004) Low-temperature aqueous alteration of crystalline pyrochlore: correspondence between nature and experiment. Mineralogical Magazine, 68 (6) 905-922 doi:10.1180/0026461046860230 | Journal (article/letter/editorial) | | Nb; Hogarth, 1977) from Lueshe near Lake Kivu of the Democratic Republic of Congo obtained from the Mineralogical...sample is not from a carbonatite host rock of the Lueshe alkaline complex, because Ta-rich pyrochlore does...2001). In a study of natural pyrochlore from the Lueshe complex, Nasraoui and Bilal (2000) presented electron...occurrence of kalipyrochlore in Lueshe in the Democratic Republic of Congo (Ercit et al., 1994; Nasraoui...structural chemistry of kalipyrochlore, a âhydropyrochloreâ. The Canadian Mineralogist, 32, 415 420. Ewing |  | 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) | | carbonatites lead to alteration of pyrochlore into hydropyrochlore, and Ba-enrichment. Also, it leads to formation...)2 Nb2 (O,OH) 0.048 0.056 0.046 1.760is a hydropyrochlore 3.350 2.150 1.950 2.4306 (H2 O) [15]. high...lead to transformation of pyrochlore into hydropyrochlore, and also to their Ba-enrichment. In addition... In Phoscorites and Carbonatites from Mantle to Mine; Wall, F., Zaitsev, A.N., Eds.; Mineralogical Society...minerals from the Bingo niobium deposit, Kivu, Democratic Republic of Congo. Miner. Depos. 1971, 6, 153â155. |  | Duma ska-S owik, M., Pieczka, A., Tempesta, G., Olejniczak, Z., Heflik, W. (2014) "Silicified" pyrochlore from nepheline syenite (mariupolite) of the Mariupol Massif, SE Ukraine: A new insight into the role of silicon in the pyrochlore structure. American Mineralogist, 99 (10) 2008-2017 doi:10.2138/am-2014-4896 | Journal (article/letter/editorial) | | alterations, leading to kenopyrochlore or hydropyrochlore species. The primary alteration was induced...hydroxykeno- to kenopyrochlore; 5 = hydrocalcio- to hydropyrochlore; 6 = fluorcalciopyrochlore; 7 = fluorhydropyrochlore;...(2000) Pyrochlores from Lueshe carbonatite complex (Democratic Republic of Congo): A geochemical record...(1996) Pyrochlore from weathered carbonatite at Lueshe, Zaire. Mineralogical Magazine, 60, 731â750. Manuscript |  | | Journal (article/letter/editorial) | | Saint HonorĂ© (Canada) and Lueshe (Zaire â now Democratic Republic of Congo) supply about 90% of world...Carbonatites from Mantle to 514 ZAITSEV et al. Mine: the Key Example of the Kola Alkaline Province,...structural Chemistry of Kalipyrochlore, a âHydropyrochloreâ, Canad. Miner., 1994, vol. 32, pp. 415â420...Nasraoui, M., Pyrochlore from Weathered Carbonatite at Lueshe, Zaire, Miner. Mag., 1996, vol. 60, pp. 731â750...Khibina alkaline massif, in Alkaline Magmatism of NorthEast Part of the Baltic Shield, Apatity: Kola Science |  | | 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...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...number of weathered carbonatites including the Lueshe complex, Zaire (Lumpkin and Ewing, 1995; Wall et |  | 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, RbâSr, and SmâNd Isotope Data. Minerals, 11 (7) 711 doi:10.3390/min11070711 | Journal (article/letter/editorial) | | orogenic belts, China [11,17â19]). In the Russian territory, such complexes are found in the Altai-Sayan fold...miaskite-syenite body (âsaddle depositâ), lying 50 m north of the Vishnevogorsk massif, and is composed of...Baidashevskoe (Nb), 10âIshkulskoe (Nb), 11âIlmenskoe, 97 mine (Nb and REE), 12âKhaldikhinskoe, 13âSungulskoe....9âBaidashevskoe (Nb), 10âIshkulskoe (Nb), 11âIlmenskoe, 97 mine (Nb and The REE),largest 12âKhaldikhinskoe, 13âSungulskoe...(Vishnevogorsk deposit); 10â12âpyrochlore V (Sr-REE-Baâhydropyrochlore and hydroxylcalciopyrochlore [100]), altered |  | | Journal (article/letter/editorial) | | for absorption using the semi-empirical method of North et al. (1968). A full-matrix least-squares reĂnement...cases of kalipyrochlore and strontiopyrochlore from Lueshe (Zaire) and bariopyrochlore from Minas Gerais (Brazil)...structural chemistry of kalipyrochlore, a âhydropyrochloreâ. Canadian Mineralogist, 32, 417â420. Ewing...in weathered pyrochloregroup minerals from the Lueshe and AraxĂĄ (Barreiro) carbonatites by 57Fe Mössbauer...spectroscopy. Canadian Mineralogist, 39, 1073â1080. North, A.C.T., Phillips, D.C., and Mathews, F.S. (1968) |  | 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 CarbonatitesâThe 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...and overgrown by vigezzite, aeschynite and hydropyrochlore (Figure 5d). 5.1.6. Natrocarbonatite Xenoliths... A.R. Pyrochlore from weathered carbonatite at Lueshe, Zaire. Mineral. Mag. 1996, 60, 731â750. [CrossRef] |  | | Book | | K(U02)As04*3H20, Tet. Vitreous yellow. Fuemrole mine, Temple Mt., Emery Co., Utah, USA. H= 2-3, Djjj=...grey, bluish-grey, yellow, light green. Langban mine, Filipstad (near), Varmland, Sweden. H= 5, Djjj=3...5As30ig, E Rhom. Translucent blue-green. Terres mine, St. Ausdell, Cornwall, England and/or Johanngeorgenstadt...804)3 âąnH20, Âź Hex. Transparent bluish. Lapis-lazuli mine, Sar-e-Sang, Badakshan, Afghanistan. H= 5.5-6, Djj4=...*21120, Mon. Vitreous colorless, white. Dutoitspan mine, Kimberley, South Africa. H= 4.5, Djjj= 2.630, D( |  | | Book (edition) | | This book is respectfully dedicated to the memory of Dr. John Sinkankas for his kind initiative and support...Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...by Strunz (1996). Thanks to the kind permission of Dr. E. Nagele from the E. Schweizerbart'sche Verlagsbuchhandlung...arisen with localities in Congo-Zaire: the country, named Democratic Republic of Congo since 1960, was changed...The former Kivu province is now divided to three regions: INTRODUCTION Nord-Kivu, Sud-Kivu, and Maniema |  | | Book | | compiled (as were the following twenty Lists) by Dr L J Spencer, with the object of providing a convenient...arose from the collaboration of one of us (PGE) with Dr Hey in the preparation of recent Lists, and a recognition...Society of Great Britain and by their present compiler, Dr M H Hey. It should be noted in this connection that...1939), which attracted the comment in a review by Dr L J Spencer: âMuch of the inforÂŹ mation has been...Magazine and Abstractsâ (M.A. 7, 313). We also thank Dr Hey for his encouragement and many helpful comments |  | | Report (issue) | | whereas the niobium-poor pegmatites of FranklinSylva, North Carolina, have muscovites that average only 94 ppm...in the late stages of pegmatite formation, hydropyrochlore is formed with an increase in tantalum content...sornowhat modified here to include more examples of North American deposits. It is beyond the scope of this...tantalum from pegmatites (pegmatitic type) of the Congo region, Africa, and Brazil is the world's principal...geochemistry of some natural acid glasses from the North Atlantic Tertiary volcanic province: Geochim. et |  | | Book (volume) | | Lavrion, Greece (6) and Cu-poor adamite from Ojuela mine, Mexico (7) IR spectra of acid salts (silicates...Arsenato-Borates Sussexite 29 Mn2+BO2(OH) Locality: Gonzen mine, Sargans, St. Gallen, Switzerland. Description:...Schiavinatoite (Nb,Ta)BO4 Locality: Ampanodiana North pegmatite, Tetezantsio-Andoabatokely Pegmatite Field...Veatchite Sr2[B5O8(OH)]2B(OH)3·H2O Locality: Billie mine, Death Valley, California, USA. Description: White...CaMgB6O8(OH)6·3H2O Locality: District # 99, underground mine, Inder boron deposit, Atyrau region, Kazakhstan |  | | Book | | Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the...Redondo, near the Portuguese coast about 155 km north-northeast of Lisbon, is now closed and flooded,...of the 30 km-wide Erongo Mountains upland, 20 km north of Usakos, are shot through with complex pegmatites |
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Lueshe Mine, Bwito, Rutshuru Territory, North Kivu, DR Congo