 | De Toledo, M. C. M., Lenharo, S. L.R., Ferrari, V. C., Fontan, F., De Parseval, P., Leroy, G. (2004) THE COMPOSITIONAL EVOLUTION OF APATITE IN THE WEATHERING PROFILE OF THE CATALAO I ALKALINE-CARBONATITIC COMPLEX, GOIAS, BRAZIL.The Canadian Mineralogist, 42 (4) 1139-1158doi:10.2113/gscanmin.42.4.1139 | Journal (article/letter/editorial) | | WEATHERING PROFILEOF THECATALÃOI ALKALINE-CARBONATITICCOMPLEX, GOIAS,BRAZILM. CRISTINA M. DE TOLEDO§...types of apatitefrom theCatalãoI alkaline-carbonatiticcomplex, Goias,Brazil, were determined by optical...defined and established for theCatalãoI alkaline-carbonatiticcomplex are quite common and widely distributed...in all carbonatitic phosphatic raw materials inBrazil, as observed in previousstudies. The coexistence...Keywords: apatite, phosphate, phosphate ore,carbonatite, weathering, lateritization, hydrothermal alteration |  | Decrée, Sophie, Boulvais, Philippe, Tack, Luc, André, Luc, Baele, Jean-Marc (2016) Fluorapatite in carbonatite-related phosphate deposits: the case of the Matongo carbonatite (Burundi)Mineralium Deposita, 51 (4) 453-466doi:10.1007/s00126-015-0620-1 | Journal (article/letter/editorial) | | ARTICLEFluorapatite incarbonatite-related phosphate deposits: the caseof the Matongocarbonatite (Burundi)...Matongocarbonatite intrusive body in theNeoproterozoic Upper Ruvubu alkaline plutoniccomplex(URAPC)...the concentration offluorapatite in the carbonatiticsystem. Magmaticfluorapatite is abundant in the...apparentin the final generation of magmaticfluorapatite (up to 1.32 wt%LREE2O3). After an episode of...the formation of K-feldspar and albite, thefluorapatite-rich rocks were partly brecciated. Oxygen and |  | | Journal (article/letter/editorial) | | smallest and youngest parts of acarbonatite-alkalinerockcomplex that formed during fractional crystallization...differentiationduring ascent from the mantle source.Fluorapatite generally crystallizes early, near the liquidus...concentrations, and the aluminosity of the melt.Carbonatite-alkaline rock complexes commonly possess a concentric...sedimentary (Fig. 1). Igneous ores are typicallycarbonatite, whichis an igneous rock with over 50 vol %...2015 (Mt)Reserves (Mt)Igneous phosphoritesBrazilRussiaSouth Africa6.0411.002.166.7012.50 |  | Mitchell, R. H., Yakovenchuk, V. N., Chakhmouradian, A. R., Burns, P. C., Pakhomovsky, Y. A. (2000) Henrymeyerite, a new hollandite-type Ba-Fe titanate from the Kovdor Complex, Russia.The Canadian Mineralogist, 38 (3) 617-626doi:10.2113/gscanmin.38.3.617 | Journal (article/letter/editorial) | | HOLLANDITE-TYPE Ba–Fe TITANATE FROM THE KOVDORCOMPLEX, RUSSIA ROGER H. MITCHELL§ Department of Geology...e – calcite – dolomitecarbonatite of the Kovdor alkaline ultramaficcomplex, Kola Peninsula, in Russia... Henrymeyerite is associated with dolomite,fluorapatite, tetra-ferriphlogopite, rimkorolgite, catapleiite...henrymeyerite, hollandite, cryptomelane group,carbonatite, Kovdorcomplex, Russia. SOMMAIRE Nous décrivons ici...à la hollandite, découvert dans un filon decarbonatite à tétraferriphlogopite – calcite – dolomite dans |  | El Bamiki, Radouan, Raji, Otmane, Ouabid, Muhammad, Elghali, Abdellatif, Khadiri Yazami, Oussama, Bodinier, Jean-Louis (2021) Phosphate Rocks: A Review of Sedimentary and Igneous Occurrences in Morocco.Minerals, 11 (10) 1137doi:10.3390/min11101137 | Journal (article/letter/editorial) | | genesis of high-gradephosphate rocks results fromcomplex concentration mechanisms involving several (bio)geochemical...specific paleo-environmental conditions, and involvecomplex biogeochemical processesduring early diagenesis...sedimentary phosphates, Morocco hosts severalcarbonatiteandcarbonatite–alkaline complexes that could be associated...[25]. The main phosphate minerals are carbonatefluorapatite (CFA), Minerals 2021, 11, 11373 of 23formerly...phosphates are the result of interaction betweencomplex biogeochemical processes that occur under particular |  | | Report (issue) | | United States in 2013. The orebody is a tabularcarbonatite intrusion and is thought to be the largest REE....O6Rare-Earth-Element-Mineral Formation inCarbonatite Magmas.....................................O7...The REE-bearing minerals are diverse and oftencomplexin composition. At least 245 individual REE-bearing...recent years, REEs have been producedfrom largecarbonatite bodies mined at the Mountain Passdeposit in...led by, in decreasing order of reserves, China,Brazil,Australia, and India (Gambogi, 2015).Australia |  | Broom-Fendley, Sam, Smith, Martin P, Andrade, Marcelo B, Ray, Santanu, Banks, David A, Loye, Edward, Atencio, Daniel, Pickles, Jonathan R, Wall, Frances (2020) Sulfur-bearing monazite-(Ce) from the Eureka carbonatite, Namibia: oxidation state, substitution mechanism, and formation conditions.Mineralogical Magazine, 84 (1) 35-48doi:10.1180/mgm.2019.79 | Journal (article/letter/editorial) | | Sulfur-bearing monazite-(Ce) from the Eurekacarbonatite, Namibia:oxidation state, substitution mechanism...Paulo, PO Box 369, 13560-970,São Carlos, SP,Brazil4School of Earth and Environment, University...Paulo, Rua do Lago 562, 05508-080 São Paulo, SP,BrazilRunning title: “Sulfur-bearing Monazite-(Ce) from...Sulfur-bearing monazite-(Ce)RedoxCarbonatiteSilcreteCalcreteWeatheringAbstract...Sulfur-bearing monazite-(Ce) occurs in silicifiedcarbonatite at Eureka, Namibia,forming rims up to ~0.5 mm |  | | Report (issue) | | PLURINATIONALSTATE OFBOSNIA AND HERZEGOVINABOTSWANABRAZILBRUNEI DARUSSALAMBULGARIABURKINA FASOBURUNDI............. 72Polymetallic iron oxide brecciacomplex deposits ........................................major types of uranium deposits were recognized [6]:(i) Deposits originating from ‘warm fluids’ with three...deposit, of which six had economic significance:(i) Oligomictic quartz-pebble conglomerate;(ii) Sandstone...Sandstone;Quartz-pebble conglomerate;Veins;Brecciacomplex;Intrusive;Phosphorite;Collapse breccia pipe; |  | | Report (issue) | | LCC TN23 .C67 2017 | DDC 333.8/50973--dc23 | SUDOCI19.16:1802LC record available at https://lccn.loc...rare-earth elements, and antimony in China; niobium inBrazil; and platinum-group elementsin South Africa and...Schulte..................................H1ChapterI. Germanium and IndiumBy W.C. Pat Shanks III, Bryn...solubility of fluorite as a function of temperature forcomplex Na-Ca-Mg-Cl brines from ambient temperatures to...related tostrongly differentiated granites, forcarbonatite-related fluorspar deposits,and for veins from |
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