 | | Journal (article/letter/editorial) | | accessory minerals of the ultramafic Delitzsch complex, Germany: implication for cooling history of carbonatites...Potsdam, D-14473 Potsdam, AB3, Telegrafenberg, Germany Landesamt f. Geowissenschaften und Rohstoffe Brandenburg...Brandenburg, D-14532 Kleinmachnow, Stahnsdorfer Damm 77, Germany Received 26 July 1999; accepted 7 February 2000...ultramafic lamprophyre–carbonatite ŽUML–CR. complex of Delitzsch, Germany, shows significant variations in mineral...differences in such minerals as apatite, phlogopite and pyrochlore. Increasing concentrations are established for |  | 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) | | The structure was solved and refined in space group Fd3m with R ¼ 0.05. The type material is deposited...Keywords: Fluorcalciopyrochlore, new mineral species, pyrochlore supergroup, crystal structure, Inner Mongolia...MINERALOGIST INTRODUCTION The minerals of the pyrochlore supergroup (Atencio et al. 2010) show large variations...atoms Nb, Ta, Sb, Ti, and W. These groups are pyrochlore, microlite, roméite, betafite, and elsmoreite...at the A site as the second prefix. The F-rich pyrochlore supergroup minerals approved by the IMA-CNMNC |  | | Journal (article/letter/editorial) | | 377–392 Tracing the chemical evolution of primary pyrochlore from plutonic to volcanic carbonatites: the role...the Tchivira carbonatites occur in a plutonic complex, the Bonga carbonatites represent hypabyssal carbonatites...carbonatites are volcanic in origin. In Tchivira pyrochlore, zoning is poorly developed; fluorine is dominant...also increase. Pyrochlores from Catanda display complex textures. They generally have a rounded corroded...carbonatite, zonation in pyrochlore, fluorine, high field strength elements, HFSE, pyrochlore, rare earth elements |  | | Journal (article/letter/editorial) | | l i t h o s Oscillatory-zoned crystals of pyrochlore-group minerals from the Guaniamo kimberlites, Venezuela...2009 Available online 18 April 2009 Keywords: Pyrochlore Betafite Perovskite Kimberlite Carbonatite Venezuela...s t r a c t Oscillatory-zoned crystals of pyrochlore-group minerals are found in the La Ceniza diamondiferous... This is the first known occurrence of the pyrochlore-group minerals in kimberlites worldwide. The minerals...Zr-rich betafite/ pyrochlore, and the outer part as pyrochlore or thorian pyrochlore. Strong compositional |  | Goodenough, K.M., Schilling, J., Jonsson, E., Kalvig, P., Charles, N., Tuduri, J., Deady, E.A., Sadeghi, M., Schiellerup, H., Müller, A., Bertrand, G., Arvanitidis, N., Eliopoulos, D.G., Shaw, R.A., Thrane, K., Keulen, N. (2016) Europe's rare earth element resource potential: An overview of REE metallogenetic provinces and their geodynamic setting. Ore Geology Reviews, 72. 838-856 doi:10.1016/j.oregeorev.2015.09.019 | Journal (article/letter/editorial) | | Introduction The rare earth elements (REE) are a group of 17 chemically similar elements (the lanthanides...to lutetium plus yttrium. Some members of this group are vital components in much modern technology,...European REE ores. Such raw material processing is complex, comprising a beneficiation step to concentrate...native metals, and the fact that some members of the group are indeed rare (Chakhmouradian and Wall, 2012)...Mountains Biggejavri Delitzsch (Storkwitz) Ditrãu Fen Galiñeiro Gardiner Complex Grønnedal-Ika Grängesberg-Blötberget |  | 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) | | 673-698 (2010) DOI : 10.3749/canmin.48.3.673 THE PYROCHLORE SUPERGROUP OF MINERALS: NOMENCLATURE Daniel ATENCIO§...Albert-Ludwigs-Universität, Albertstrasse 23b, D–79104 Freiburg, Germany Pavel M. KARTASHOV Institute of Geology, Ore Deposits...Abstract A new scheme of nomenclature for the pyrochlore supergroup, approved by the CNMNC–IMA, is based...referred to until now as the pyrochlore group should be referred to as the pyrochlore supergroup, and the subgroups...Ta, Sb, Ti, and W. The recommended groups are pyrochlore, microlite, roméite, betafite, and elsmoreite |  | 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) | | Penchenga Neoproterozoic linear fenite-carbonatite complex in the Yenisei Ridge consists of several magnesiocarbonatite...ancylite), as well as secondary phases (Sr-Ba pyrochlore, ferrocolumbite, fersmite, and Fe and Sr carbonates)...the Neoproterozoic Penchenga fenite-carbonatite complex in the Southern Trans-Angara area of the Yenisei...remarkable in bearing high-temperature apatite-group phosphates and rare-metal (Nb–Ta, REE) and sulfide...Tatarka-Ishimba Fault. The Penchenga linear carbonatite complex is located in the upper reaches of the Bolshaya |  | | Journal (article/letter/editorial) | | Zr–Th–U MINERALS IN CHROMITITES OF THE FINERO COMPLEX, WESTERN ALPS, ITALY: EVIDENCE FOR CARBONATITE-TYPE... chromitite, carbonatite metasomatism, Finero Complex, Western Alps, Italy. SOMMAIRE Nous avons trouvé...(Haggerty 1995), zirconolite has been included in the group of rare and “exotic” mineral oxides, carriers of...mafic and ultramafic layered rocks (the Basic Complex) intruded into granulite- to amphibolite-facies...1978). ZIRCONOLITE IN CHROMITITES OF THE FINERO COMPLEX, ITALY 1827 FIG. 1. Simplified geological map |  | 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) | | phases, joined by trace amounts of intercumulus pyrochlore. Ankerite is zoned, from Ca(Mg, Fe2+)(CO3)2 cores...strontianite grains. Magnetite is close to pure Fe3O4. Pyrochlore has finescale euhedral oscillatory zoning and...light-REEenriched rims. ICP-MS analysis of magnetite and pyrochlore from the carbonatite allows calculation of their...melt saturated in these phases, plus calcite and pyrochlore, with prior fractionation of a silicate mineral...ankerite-magnetite-calcite carbonatite, with a trace of pyrochlore, from Swartbooisdrif, NW Namibia, and show that |  | | Journal (article/letter/editorial) | | Ancochea et al. (2010) define it as the Basal Complex (Submarine Edifice) and interpret it as the submarine...composition but includes carbonatite dykes. The Basal Complex also contains narrow plugs or remnants of lava...swarm trending roughly north– south cuts the Basal Complex basaltic dykes and volcanic material of the Submarine...minerals, sodium was determined first. In the pyrochlore analyses, HfO2, Ta2O5, REE, Y2O3, UO2, ThO2 and...the calcite. The carbonatites contain accessory pyrochlore, which occasionally cuts the banding (Fig. 5a) |  | | Journal (article/letter/editorial) | | Canadian Cordillera, apart from the Ice River Complex (Peterson and Currie, 1994), occur as sill-like...intruded Neoproterozoic strata of the Horsethief Creek Group (Pell and Simony, 1987) during Late Cambrian and...Locock, 1994) have been obtained for the Ice River Complex, the only major intrusion of undersaturated silicate...pyrrhotite, ilmenite, magnetite, ferrocolumbite, pyrochlore supergroup minerals, fersmite, thorite, nioboaeschynite...ferrocolumbite whereas the other MA facies only contains pyrochlore. Approximately 5 vol.% of the Fir system is composed |  | Ashchepkov, Igor, Zhmodik, Sergey, Belyanin, Dmitry, Kiseleva, Olga N., Medvedev, Nikolay, Travin, Alexei, Yudin, Denis, Karmanov, Nikolai S., Downes, Hilary (2020) Aillikites and Alkali Ultramafic Lamprophyres of the Beloziminsky Alkaline Ultrabasic-Carbonatite Massif: Possible Origin and Relations with Ore Deposits. Minerals, 10 (5) 404 doi:10.3390/min10050404 | Journal (article/letter/editorial) | | last of the Rodiniainbreakup into the Northern group of continents [20,21]. Earlyevents Proterozoic lamprophyres...Late Cretaceous [26,27]most and Eocene into the group of continents Aillikites also accompany plume events[28]...(Figure 1) One of the interesting objects with the complex plume-subduction nature is the Beloziminsky massif...onazite; (3) apatite-magnetite–pyrochlore; and (4) apatite–pyrochlore–columbite [35–38]. In the quarry...cryptic groundmass structure (Figure 5a). The second group are the youngest Figure 2. Paleo reconstruction |  | Káldos, Réka, Guzmics, Tibor, Mitchell, Roger H., Dawson, John Barry, Milke, Ralf, Szabó, Csaba (2015) A melt evolution model for Kerimasi volcano, Tanzania: Evidence from carbonate melt inclusions in jacupirangite. Lithos, 238. 101-119 doi:10.1016/j.lithos.2015.09.011 | Journal (article/letter/editorial) | | Berlin, Habelschwerdter Allee 45, 14195 Berlin, Germany * Corresponding author. E-mail address: tibor...carbonatite of the Belaya Zima Alkaline Carbonatite Complex (East Sayan, Russia). Doklady Earth Sciences 455...Gittins, J., Rucklidge, J.C., 1981. The Batbjerg complex, East Greenland: a unique ultrapotassic Caledonian...1961. Differentiation trends in the Ice River Complex, British Columbia. IP T American Journal of...Geochemistry and petrology of the alkalic igneous complex at Magnet Cove, Arkansas. United States Geological |
|
