 | | Journal (article/letter/editorial) | | Carbonates of the magnesite-siderite series from four carbonatite complexes H. A. BUCKLEY AND A. R. WOOLLEY...of the magnesite-siderite series have been found and analysed in carbonatites from the Lueshe, Newania...until now only by a few X-ray identifications of magnesite and three published analyses of siderite and breunnerite...define the complete solid-solution series from magnesite to siderite. They occur together with dolomite...in Newania carbonatites indicates that ferroan magnesite, which co-exists with ankerite, is a primary liquidus |  | | 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) | | three analyses from Lueshe (Meyer, 1958) including a rauhaugite containing 90% magnesite. Clearly more analyses...Kangankunde (Garson, 1965), Tundulu (Garson, 1962), Lueshe (Meyer, 1958), Oka (Gold, 1969, quoted in Currie...carbonatite compositions, and rocks such as the Lueshe magnesite-rich rauhaugite may have been formed by such...in the long term prove to be unnecessary, though Dr Le Bas (pers. comm.) is of the opinion that they...Acknowledgements. I am extremely grateful to Dr T. Deans and Dr M. J. Le Bas for critically reading this |  | Benaouda, Rachid, Kraemer, Dennis, Sitnikova, Maria, Goldmann, Simon, Freitag, Ralf, Bouali, Abdelhafid, Mouttaqi, Abdellah, El Haloui, Rachid, Essaadaoui, Mustapha, Bau, Michael (2020) Thorium-poor monazite and columbite-(Fe) mineralization in the Gleibat Lafhouda carbonatite and its associated iron-oxide-apatite deposit of the Ouled Dlim Massif, South Morocco. Gondwana Research, 77. 19-39 doi:10.1016/j.gr.2019.06.011 | Journal (article/letter/editorial) | | phases (iron oxides) and apatite. The presence of magnesite and siderite at depth is known from ur drill...Lafhouda carbonatite is commonly a beforsite, na magnesite-bearing carbonatite is also described from a drill...67 m depth) that shows obvious occurrence of magnesite (dark in BSE images) and to lesser extent siderite... Jo mainly occurs as veinlets cross-cutting magnesite and siderite following perpendicular micro-cracks...distinct from the beforsite present in the outcrop. Magnesite is present in this sample in significant amounts |  | | Journal (article/letter/editorial) | | spinel, phlogopite, carbonates (dolomite, calcite, magnesite), apatite, tetraferriphlogopite, Fe–Ni–Cu-sulfides...dolomite, phlogopite–tetraferriphlogopite, calcite, magnesite, pyrochlore, Fe–Ni–Cu-sulfides and apatite (size...documented only in altered samples (kalipyrochlore) from Lueshe with possible accommodation in the A-site (Nasraoui...(Eds.), Phoscorites and Carbonatites from Mantle to Mine: The Key Example of the Kola Alkaline Province.... Pyrochlores from the Lueshe carbonatite complex (Democratic Republic of Congo): a geochemical record |  | | Report (issue) | | ~port- - - - -- - - - - - - - - Graph showing world mine production of niobium concentrate, for selected...larger, than was established when the decision to mine was made. Experts with a sound knowledge of a deposit...1970 1975 1980 1985 1990 • Year 2. World mine production of niobium concentrate, for selected...production is dominated by three producers that mine pyrochlore; the Araxa open pit in Minas Gerais,...state, also in Brazil, and the Niobec underground mine in Quebec Province, Canada. The Brazilian position |  | | 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 |  | | 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 |  | Cordeiro, Pedro F.O., Brod, José A., Dantas, Elton L., Barbosa, Elisa S.R. (2010) Mineral chemistry, isotope geochemistry and petrogenesis of niobium-rich rocks from the Catalão I carbonatite-phoscorite complex, Central Brazil. Lithos, 118 (3) 223-237 doi:10.1016/j.lithos.2010.04.007 | Journal (article/letter/editorial) | | ilmenite, clinohumite, rutile, dolomite, and magnesite. P1 phoscorites are very similar to those described...represent the igneous paragenesis. Secondary magnesite was also described in phoscorites from the Catalão...norsethite BaMg(CO3)2 and magnesite are subordinate. While calcite, dolomite and magnesite are common in carbonatites...dolomite occurring as an interstitial phase or magnesite as inclusions in altered olivine. The Magnetite...phoscorites and earlier silicate rocks by clinohumite, magnesite and tetra-ferriphlogopite. We did not analyze |  | | Journal (article/letter/editorial) | | of Sr-rich (0.55 wt.% SrO) ferroan dolomite, magnesite and pseudomorphs of chlorite after phlogopite...carbonatite, chlorite, dolomite, Ireland, mantle, magnesite, oxygen isotope, silicocarbonatite, spinel. Introduction...mineral. Euhedral to subhedral embayed crystals of magnesite are dispersed throughout the groundmass and are...and mineralogy clearly show it is a carbonatite. mine its relationship to carbonatite or other potentially...the pipe. (c) Dolomite segregations containing magnesite crystals in the dolomite carbonatite. (d) A typical |  | | 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"...Lengai (DAwsoN, 1962). Siderite, rhodochrosite, magnesite, strontianite and rare earth carbonate minerals...geochemistry of the earbonatite and syenite complex of Lueshe (N. E. Zaire). - - Lithos 13, 159--170, 1980. MITCHELL |  | | Journal (article/letter/editorial) | | Saint Honoré (Canada) and Lueshe (Zaire – 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,...Nasraoui, M., Pyrochlore from Weathered Carbonatite at Lueshe, Zaire, Miner. Mag., 1996, vol. 60, pp. 731–750...Khibina alkaline massif, in Alkaline Magmatism of NorthEast Part of the Baltic Shield, Apatity: Kola Science...Example of Magnesite and Siderite Carbonatites, in Phoscorites and Carbonatites from Mantle to Mine: the Key |  | | Journal (article/letter/editorial) | | continues the series of 21 published triennially by Dr. L. J. Spencer between 1897 and 1958. Such lists...MHHepa~orM~ecKoro O6~eCTBa; the eorttinuation of Dr. Speneer's series seems desirable since it differs...fumarole on Cerro Pululus, north-west Argentina, appear to be F%As20 n. Named after Dr. V. Angelelli, Director...a fissure mineral at Lhngban, Sweden. Named after Dr. Ragnar Blix. [M.A. 14-416.] Bobkowit. Gerlnan transliteration...List), named by J. de Lapparent (1927) in honour of Dr. Johann Bahm of Berlin; corrected in ~r Jahrb. Min |  | | Journal (article/letter/editorial) | | Raglan; Stevenson's quarry, Auckland; Lake Pupuke, North Shore, Auckland; Smale's quarry, Onepoto Basin;...Hill, Derbyshire. South Africa Wesselton diamond mine (kimberlite pipe). Indian Ocean Kerguelen Archipelago...(dunite). Arkansas Murfreesboro (kimberlite). North Carolina Webster (dunite, r'r,'ebsterite, and enstatite)...California batholith (olivine norite). Belgian Congo Lueshe carbonatite. South Africa Bushveld complex...leucite basait florvs. Idaho Snake River basalts. North Carolina Addie (dunite). California Siskiyou |  | | Journal (article/letter/editorial) | | 2006), are the presence of magnesite, graphite and Cr-rich magnetite. Magnesite is an early crystallizing...CO2 and carbonate minerals such as dolomite and magnesite, can be stable in peridotite mantle. Coexistence...by co-existing earlycrystallized graphite and magnesite is below that of the FMQ buffer and lies on the...change in carbonate mineralogy from dolomite to magnesite at about 32 kb (Brey et al. 1983; Olafsson and...CO2 and carbonate minerals such as dolomite and magnesite in peridotite mantle is controlled by fO2 and |  | | 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 |  | Giovannini, Arthur L., Bastos Neto, Artur C., Porto, Claudio G., Pereira, Vitor P., Takehara, Lucy, Barbanson, Luc, Bastos, Pedro H.S. (2017) Mineralogy and geochemistry of laterites from the Morro dos Seis Lagos Nb (Ti, REE) deposit (Amazonas, Brazil) Ore Geology Reviews, 88. 461-480 doi:10.1016/j.oregeorev.2017.05.008 | Journal (article/letter/editorial) | | deposit is located within the Balaio Indigenous Territory, within the Pico da Neblina National Park, and...calcite and dolomite, whereas ankerite, siderite, magnesite, and rhodochrosite are relatively rare. Other...strontiopyrochlore (Lapin and Kulikova, 1989). At Lueshe (Wall et al., 1996), the most K-Nb-rich pyrochlore...carbonatites was described at Lueshe (Democratic Republic of the Congo) by Wall et al. (1996), who noted...Jr., 2012. Rare earth mining and exploration in North America. Elements 8, 369-375. Mitchell, R.H., 2005 |  | | Journal (article/letter/editorial) | | Carbonatite Complex, Canada (Sage 1988); complexes Lueshe, DR Congo, Newania, India, Kangankunde, Malawi, and...they are replaced by ankerite and calcite or magnesite (Buckley and Woolley 1990). Calcite and dolomite...Rock material from the cores of exploratory wells, mine dumps, and outcrops associated with the Karasug...Ulatai deposit, as well as from the TeelyOrgudyd, North Choz, and South Choz ore fields (Fig. 1b). The most...grateful to our colleagues Prof. Vladimir Lebedev, Dr. Amina Sugorakova, and Renat Kuzhuget from the Tuva |  | 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) | | example of magnesite and siderite carbonatites. In Phoscorites and Carbonatites from Mantle to Mine; Wall...minerals from the Bingo niobium deposit, Kivu, Democratic Republic of Congo. Miner. Depos. 1971, 6, 153–155.... Pyrochlores from the Lueshe carbonatite complex (Democratic Republic of Congo): A geochemical record...carbonatite massif, Chadobets upland (Krasnoyarsk Territory, Russia). Period. Mineral. 2017, 86, 99–118. Burtseva |  | | Book (edition) | | co-author, teacher, mentor, colleague and friend, Dr. Joseph A. Mandarino. -Malcolm E. Back Fleischer's...they are: Dr. Peter Bayliss, Dr. Ernst A.J. Burke, Dr. Anton and hakhmouradian,Robert Gault, Dr. Julian...Låszl6 Horvåth, Dr. Uwe Kolitsch, Locock,Gaspare Malet.to,Dr. Roger Mitchell, Renato Pagano. Dr. Ole Petersen...Robert Ramik,Andy Roberts, hallit, Dr. Chris Stanley,Tony Steede and Dr. ThomasWitzke. upport and encouragementof...Abernathyitc, K[(UO 2 )(AsO,)](HP) 3, tet., Fumerole No. 2 mine, Temple Mountain. on the southeast flank of the |  | | Journal (article/letter/editorial) | | deposits by Tissot and Welte (1978), Hunt (1979), North (1985), Selley (1997) and Gluyas and Swarbrick (2004)...Mineral Chemical composition Line Maghemite Magnesite Magnetite Magnetite/vanadiferous Malachite Malayaite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...deposits embedded within sedimentary series (magnesite, borate) or they form sediments by themselves...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting | | | Journal (article/letter/editorial) | | deposits by Tissot and Welte (1978), Hunt (1979), North (1985), Selley (1997) and Gluyas and Swarbrick (2004)...Mineral Chemical composition Line Maghemite Magnesite Magnetite Magnetite/vanadiferous Malachite Malayaite...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...deposits embedded within sedimentary series (magnesite, borate) or they form sediments by themselves...you look for a mine look near a mine”. This includes the imperative “if you look for a mine look for smelting |
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