 | Smith, M., Kynicky, J., Xu, Cheng, Song, Wenlei, Spratt, J., Jeffries, T., Brtnicky, M., Kopriva, A., Cangelosi, D. (2018) The origin of secondary heavy rare earth element enrichment in carbonatites: Constraints from the evolution of the Huanglongpu district, China. Lithos, 308. 65-82 doi:10.1016/j.lithos.2018.02.027 | Journal (article/letter/editorial) | | crystallisation of monazite-(Ce), bastnäsite-(Ce), parisite-(Ce) and aeschynite-(Ce) as magmatic phases. Burbankite...potentially an early crystallising phase. Monazite-(Ce) was subsequently altered to produce a second generation...britholite-(Ce), accompanied by the formation of allanite-(Ce). Bastnäsite and parisite where replaced...replaced by synchysite-(Ce) and röntgenite-(Ce). Aeschynite-(Ce) was altered to uranopyrochlore and then pyrochlore...Yuantao. the variation in the stability of aqueous complex ions with different ligands (Haas et al., 1995; |  | Doroshkevich, A. G., Viladkar, S. G., Ripp, G. S., Burtseva, M. V. (2009) HYDROTHERMAL REE MINERALIZATION IN THE AMBA DONGAR CARBONATITE COMPLEX, GUJARAT, INDIA. The Canadian Mineralogist, 47 (5) 1105-1116 doi:10.3749/canmin.47.5.1105 | Journal (article/letter/editorial) | | MINERALIZATION IN THE AMBA DONGAR CARBONATITE COMPLEX, GUJARAT, INDIA Anna G. DOROSHKEVICH Geological...of quartz, florencite-(Ce), strontianite, barite and sparse bastnäsite – parisite – synchysite typical...recrystallization, carbonatites, REE fluorcarbonates, florencite-(Ce), Amba Dongar, India. Sommaire Nous avons étudié...L’association de quartz, florencite-(Ce), strontianite, barite et bastnäsite – parisite – synchysite (fluorcarbonates...devenue enrichie en F–, (SO4)2–, terres rares et Si, ce qui a produit un assemblage de barite, fluorite, |  | 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) | | and geochronology of the Songwe Hill carbonatite, Malawi Article in Journal of African Earth Sciences ·...and geochronology of the Songwe Hill carbonatite, Malawi Sam Broom-Fendley a, *, Aoife E. Brady b, 1, Matthew...2017 Available online 2 June 2017 Songwe Hill, Malawi, is one of the least studied carbonatites but has...other carbonatite complexes at Chilwa Island and Tundulu in the Chilwa Alkaline Province and others worldwide...enriched in HREE (<2000 ppm Y) and, in C3, synchysite-(Ce). The final stages comprise HREE-rich apatite fluorite |  | | Journal (article/letter/editorial) | | mineraiisation in carbonatites of the Tundulu complex, Malawi: Processes at the fluid/rock interface...December 14, 1993) Abstract-The Tundulu carbonatite complex in southeastern Malawi was intruded during the late...synchysite [(La, Ce, Nd)Ca( CO,)z)F] with subordinate amounts of parisite [(La, Ce, Nd)zCa(C03)3Fz] and...and bastngesite [(La, Ce, Nd)C03F], crystallising in the order synchysite parisite + bastntiesite. Some...Some of the parisite is retrograde in origin, having formed as an alteration product from synchysite. Only |  | Doroshkevich, A. G., Ripp, G. S., Viladkar, S. G., Vladykin, N. V. (2008) THE ARSHAN REE CARBONATITES, SOUTHWESTERN TRANSBAIKALIA, RUSSIA: MINERALOGY, PARAGENESIS AND EVOLUTION. The Canadian Mineralogist, 46 (4) 807-823 doi:10.3749/canmin.46.4.807 | Journal (article/letter/editorial) | | Abstract The Arshan carbonatites in the Transbaikalia region of Siberia consist of sövite with high concentrations...(Fig. 3a). It is rich in phlogopite and allanite(Ce), and contains rare phenocrysts of sulfates and bastnäsite...and sulfate veinlets. Bastnäsite was replaced by parisite and allanite, and phlogopite by chlorite. The...information about the composition of bastnäsite, parisite and allanite was given by Bulnaev & Karmanov (2006)...were formed during the magmatic stage. Parisite, allanite-(Ce), strontianite, thorite, thorianite, REE-rich |  | Ruberti, E., Enrich, G. E.R., Gomes, C. B., Comin-Chiaramonti, P. (2008) HYDROTHERMAL REE FLUOROCARBONATE MINERALIZATION AT BARRA DO ITAPIRAPUA, A MULTIPLE STOCKWORK CARBONATITE, SOUTHERN BRAZIL. The Canadian Mineralogist, 46 (4) 901-914 doi:10.3749/canmin.46.4.901 | Journal (article/letter/editorial) | | ITAPIRAPUÃ, A MULTIPLE STOCKWORK CARBONATITE, SOUTHERN BRAZIL Excelso RUBERTI§, Gaston E.R. ENRICH and...The Barra do Itapirapuã (BIT) carbonatites in southern Brazil belong to the final stages of the Early...magmatism of the Ponta Grossa Arch Province. The BIT complex is a dyke and vein stockwork in which four main...were deposited. Syntaxy between synchysite-(Ce) and parisite-(Ce) is very common owing to the similarity...bastnäsite-(Ce) occurs as individual crystals, overgrown by the synchysite and parisite polycrystals |  | Broom-Fendley, Sam, Brady, Aoife E., Wall, Frances, Gunn, Gus, Dawes, William (2017) REE minerals at the Songwe Hill carbonatite, Malawi: HREE-enrichment in late-stage apatite. Ore Geology Reviews, 81. 23-41 doi:10.1016/j.oregeorev.2016.10.019 | Journal (article/letter/editorial) | | REE minerals at the Songwe Hill carbonatite, Malawi: HREE-enrichment in late-stage apatite Sam Broom-Fendley...earth elements Heavy rare earth elements Synchysite-(Ce) Chilwa Alkaline Province Critical metals Songwe...and the REE fluorocarbonates, synchysite-(Ce) and parisite-(Ce), which are the other principal REE bearing...a light (L)REE mineral assemblage of synchysite-(Ce), strontianite and baryte. Finally, late-stage Ap-4...retained in solution, subsequently forming synchysite-(Ce). This model will be applicable to help guide exploration |  | | Journal (article/letter/editorial) | | 3749/canmin.1400012 AN UNUSUAL OCCURRENCE OF SYNCHYSITE-(Ce) IN AMYGDULES FROM THE ESTEREL VOLCANIC ROCKS, FRANCE:...appear to be particularly enriched in synchysite-(Ce), developed as fibrous aggregates together with chlorite...crystallize from the hydrothermal solution was synchysite-(Ce), whose REE pattern has strong similarities to the...basalt. Keywords: rare-earth elements, synchysite-(Ce), basalt, alteration, amygdule, Esterel, France....synchysite-(Ce) in this uncommon environment. GEOLOGICAL CONTEXT The Massif de l’Esterel (southern France) |  | Downes, Peter J., Demény, Attila, Czuppon, György, Jaques, A. Lynton, Verrall, Michael, Sweetapple, Marcus, Adams, David, McNaughton, Neal J., Gwalani, Lalchand G., Griffin, Brendan J. (2014) Stable H–C–O isotope and trace element geochemistry of the Cummins Range Carbonatite Complex, Kimberley region, Western Australia: implications for hydrothermal REE mineralization, carbonatite evolution and mantle source regions. Mineralium Deposita, 49 (8) 905-932 doi:10.1007/s00126-014-0552-1 | Journal (article/letter/editorial) | | geochemistry of the Cummins Range Carbonatite Complex, Kimberley region, Western Australia: implications for hydrothermal...Neoproterozoic Cummins Range Carbonatite Complex (CRCC) is situated in the southern Halls Creek Orogen adjacent to...has focussed primarily on the secondary monazite-(Ce)-rich REE and U mineralization in the oxidized zone...hosted lenses of apatite–monazite-(Ce) and foliated monazite-(Ce)–talc rocks (≤∼25.8 wt% total rare earth...wt% TREO), where calcite, parisite-(Ce) and synchysite-(Ce) replace monazite-(Ce) after apatite. Primary |  | Graupner, Torsten, Mühlbach, Caroline, Schwarz-Schampera, Ulrich, Henjes-Kunst, Friedhelm, Melcher, Frank, Terblanche, Hennie (2015) Mineralogy of high-field-strength elements (Y, Nb, REE) in the world-class Vergenoeg fluorite deposit, South Africa. Ore Geology Reviews, 64. 583-601 doi:10.1016/j.oregeorev.2014.02.012 | Journal (article/letter/editorial) | | The Vergenoeg fluorite deposit in the Bushveld Complex in South Africa is hosted by a volcanic pipe-like...emplacement of other magmatic rock units of the Bushveld Complex (Sm–Nd isochron age for fluorite separates: 2040...fayalite-rich units. Common HFSE minerals are complex Nb-rich oxides (samarskite, fergusonite), REE phosphates...these rocks. The common occurrence of bastnäsite-(Ce) in the gossan, “metspar” plugs and especially in...presence of fine-grained REE fluorocarbonates, monazite-(Ce), monazite-(La) and xenotime-(Y). © 2014 Elsevier |  | | Journal (article/letter/editorial) | | the principal primary REE mineral. Within each complex the C – O and Sr – Nd isotopic data are similar...mineralization and its host carbonatites in each complex are derived from the same source and are co-genetic...1954), Fen (Norway) (Andersen, 1986), Tundulu and Kangankunde (Malawi) (Ngwenya, 1994; Wall and Mariano,...–fluocarbonates synchysite –(Ce) and parisite– (Ce), Ca-free fluocarbonate bastnäsite– (Ce), alkali carbonates...and hydrous carbonate ancylite –(Ce). The phosphate, monazite – (Ce), is a major non-carbonate REE mineral |  | Xu, Cheng, Kynicky, Jindrich, Chakhmouradian, Anton R., Campbell, Ian H., Allen, Charlotte M. (2010) Trace-element modeling of the magmatic evolution of rare-earth-rich carbonatite from the Miaoya deposit, Central China. Lithos, 118 (1) 145-155 doi:10.1016/j.lithos.2010.04.003 | Journal (article/letter/editorial) | | southwestern margin of the Wudang Terrane at the southern margin of the Qinling orogenic belt (Fig. 1)....framework and tectonic evolution of the Qinling region are given in Meng and Zhang (2000), Ratschbacher...Mnz, monazite-(Ce); Ap, fluorapatite; Rt, rutile; Bt, bastnäsite-(Ce); Sy, synchysite-(Ce). Note alteration...bastnäsite-(Ce) after primary calcite (F), and syntaxial intergrowths of bastnäsite-(Ce) and synchysite-(Ce)...synchysite-(Ce) (G, H). 148 C. Xu et al. / Lithos 118 (2010) 145–155 C. Xu et al. / Lithos 118 (2010) 145–155 |  | | Journal (article/letter/editorial) | | Petrology (2001) 72: 259±280 Synchysite-(Y)±synchysite-(Ce) solid solutions from Markersbach, Erzgebirge, Germany:...solid-solution series between synchysite-(Y) and synchysite-(Ce). The rareearth elements likely were liberated upon...rare earth elements (REE; Y, La, and the lanthanides Ce-Lu) in unaltered, meta- to peraluminous granitic...redeposited as ¯uorocarbonates such as bastnaÈsite, parisite, and synchysite. If the aqueous solution contains...(REE,Ca,Th) CO3 2 F, will be stabilized before parisite and bastnaÈsite. Synchysite constitutes a rare |  | Kozlov, Evgeniy, Fomina, Ekaterina, Sidorov, Mikhail, Shilovskikh, Vladimir, Bocharov, Vladimir, Chernyavsky, Alexey, Huber, Miłosz (2020) The Petyayan-Vara Carbonatite-Hosted Rare Earth Deposit (Vuoriyarvi, NW Russia): Mineralogy and Geochemistry. Minerals, 10 (1) 73 doi:10.3390/min10010073 | Journal (article/letter/editorial) | | Devonian carbonatite–ijolite–pyroxenite–olivinite complex comprises several carbonatite fields: Neske Vara...[12–17], China India [39–42], Italy have [43,44], Malawi [45–51], on the subjectNamibia of rare earth carbonatites...[18–37], Finland [38], India [39–42], Italy [43,44], Malawi [45–51], Tanzania [67], the USA [68–72], and Vietnam...Vuoriyarvi alkaline-ultrabasic carbonatite massif (Kola region, Russia) is one of more than 2. Geological Setting...carbonatite massif (Kola region, Russia) is one of more than massif is complex due to its multiphase nature |  | | Journal (article/letter/editorial) | | quartz, and REEs are predominant in Amba Dongar complex (Deans et al., 1972; Doroshkevich et al., 2009;...intrusive veins were taken from the Amba Dongar complex. Several of the extensively domed Cretaceous sedimentary...that are exposed at some valley sections in the complex. Calcite veins (AT9C, MT2/2C), probably of carbonatitic...Gittins, (2016) were taken from the Siriwasan complex. Whole-rock powder was appropriate for most of...carbonatites may be attributed to several factors: complex isotopic exchange kinetics, heterogeneity in the |
|
