 | | Journal (article/letter/editorial) | | ANALOGUE STUDIES: GEOLOGY AND MINERALOGY OF MORRO DO FERRO, BRAZIL P.M.C. B A R R E T T O a n d K. F U J I...Brazilian Nuclear Energy Commission (CNEN), Rio de Janeiro (Brazil) (Accepted for publication January 15, 1986)...analogue studies: Geology and mineralogy of Morro do Ferro, Brazil. In: N.A. Chapman and J.A.T. Smellie (Guest-Editors)...understanding of the Th- and REE-rich orebody at Morro do Ferro as a possible natural analogue for a radioactive...long period of time. The Morro do Ferro in the State of Minas Gerais, Brazil, could be a suitable analogue |  | Gomes, Celso de Barros, Azzone, Rogério Guitarrari, Rojas, Gaston Eduardo Enrich, Guarino, Vincenza, Ruberti, Excelso (2021) Agpaitic Alkaline Rocks in Southern Brazilian Platform: A Review. Minerals, 11 (9) 934 doi:10.3390/min11090934 | Journal (article/letter/editorial) | | Rocks in Southern Brazilian Platform: A Review Celso de Barros Gomes 1, *, Rogério Guitarrari Azzone 1 ,... University of São Paulo, São Paulo 05508-080, Brazil; rgazzone@usp.br (R.G.A.); gastonenrich@usp.br...occurrences located in southern Brazil and at the border between Brazil and Paraguay. All the Brazilian...Triassic. The most significant occurrence is Poços de Caldas, the largest alkaline massif in South America...main to late-magmatic Main References 1 Poços de Caldas 79–87 (Ar-Ar, K-Ar) 2 Itatiaia 67.5–71 |  | | Journal (article/letter/editorial) | | within six natural analogue studies: Pocß os de Caldas, Cigar Lake, Maqarin, El Berrocal, Oklo and Palmottu...undertaken in the following systems: Pocß os de Caldas (Brazil), a Mesozoic volcanic ring-structure hosting...methodology of the BPM exercises, from the Pocß os de Caldas to the Oklo and Palmottu projects, has not varied...included in this revision: Pocßos de Caldas: SKB (Sweden), KTH (Sweden), PSI (Switzerland)...model the U/Fe association was done in Pocß os de Caldas by assuming the coprecipitation of U3O8 with Fe(OH)3 |  | | Report (issue) | | PLURINATIONAL STATE OF BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRUNEI DARUSSALAM BULGARIA BURKINA FASO BURUNDI...remain the responsibility of the contributors and do not necessarily represent the views of the IAEA or....................................... 38 6.4.3. Brazil..................................................mineral was described as the thorium-silicate thorite. The isolation of the element thorium was made...thus, occurs as oxides (thorianite), silicates (thorite) and phosphates (frequently with REEs). A common |  | | Journal (article/letter/editorial) | | Manuscript The thorite mineralization in the Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil) Ingrid.W...Pereira, The thorite mineralization in the Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil), Ore Geology...pertain. The thorite mineralization in the Madeira Sn-Nb-Ta world-class deposit (Pitinga, Brazil). Ingrid...Programa de Pós-graduação em Geociências, Instituto de Geociências, Universidade Federal do Rio Grande...Grande do Sul. Avenida Bento Gonçalves 9500, Porto Alegre, 91501-970, RS, Brazil. ingrid.hadlich@ufrgs.br |  | Andersen, Allen K., Clark, James G., Larson, Peter B., Donovan, John J. (2017) REE fractionation, mineral speciation, and supergene enrichment of the Bear Lodge carbonatites, Wyoming, USA. Ore Geology Reviews, 89. 780-807 doi:10.1016/j.oregeorev.2017.06.025 | Journal (article/letter/editorial) | | lateritically weathered carbonatite at Araxá and Catalão I, Brazil and Mt. Weld, Australia (cf., Zaitsev et al., 1998;...Juquiá, Brazil; Bayan Obo, China; Karonge, Burundi; and the Barra do Itapirapuã carbonatite, Brazil, among...REE3+ + P5+ ↔ (Th,U)4+ + Si4+ (huttonite– or thorite–type) (2) In apatite group minerals, REE are...involving end-member ThSiO4 polymorphs huttonite or thorite, and coupled substitution 3 are insignificant due...crystals are smaller, lack the clear hexagonal form, and do not experience degradation due to dehydration during |  | | Report (issue) | | PLURINATIONAL STATE OF BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRUNEI DARUSSALAM BULGARIA BURKINA FASO BURUNDI...particular the contributions of the late R. Villas-Boas (Brazil). The IAEA officers responsible for this publication...remain the responsibility of the contributors and do not necessarily represent the views of the IAEA or.............................................. 39 BRAZIL .................................................Gondwana supercontinent and which are now found in the Brazil Shield, southern and eastern Africa, Madagascar |  | Chakrabarty, A., Mitchell, R. H., Ren, M., Sen, A. K., Pruseth, K. L. (2013) Rinkite, cerianite-(Ce), and hingganite-(Ce) in syenite gneisses from the Sushina Hill Complex, India: occurrence, compositional data and petrogenetic significance. Mineralogical Magazine, 77 (8) 3137-3153 doi:10.1180/minmag.2013.077.8.08 | Journal (article/letter/editorial) | | rocks are rinkite, cerianite-(Ce), and cerian thorite. Rinkite, formed at the ortho-magmatic stage predates...gneisses are represented mainly by rinkite, cerian thorite and ancylite (Mitchell and Chakrabarty, 2012)....minor late-stage eastonitic biotite and accessory thorite, unidentified Mn-Fe oxides and hingganite-(Ce) (Chakrabarty...zircon and manganoan-magnetite. The miaskitic gneisses do not show any visible gneissosity in their surficial...metamorphism (600 750ºC at 0.70.1 GPa) is related mainly to de-fragmentation of the Rodinia supercontinent which |  | | Book | | A. F. Corey, M. S. Corey, R. 'l\T. Deane, A. P. De Carvalho, L. F. Dellwig, M. Deul, S. B. Dickinson... . . . . . . . . . . . . . . . . . . . . . . . Brazil . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . Thorite Veins and Breccia Pipes . . . . . . . . . . . ......... . ..... . ........ . ................ . Brazil ...... . .... .... ............... .. ....... ...all com.ets are turned from the, sun. I do not knoiv why they do this, whether it is etiquette among thern |  | | Report (issue) | | (Australia) Pervomayskoye (Ukraine), Lagoa Real (Brazil), Valhalla (Australia) Pribram , Jachymov (Czech...(and other) rocks and commonly contain deposits that do not fit into other types, and have origins that are...examples of this deposit type are Lagoa Real in Brazil, Zheltye Vody deposit in Ukraine and Valhalla in...fertilizers by several countries and most countries do not report U from phosphorite as a resource. (8)...of Th include Australia, USA, Turkey, India and Brazil, although most countries have not been diligent |  | | Book (edition) | | International Symposium on Carbonatites in Pocos de Caldas, Brazil for which this writer was keynote speaker... Pakistan, Quebec, Finland, Guyana, Venezuela, Brazil, Paraguay, Angola and South-West Africa, i.a. Carbonatites...Quebec and Araxa, Brazil) and important sources of P, Ti, Cu and CaCO; (Jacupiranga, Brazil). In addition...Carbonatites of the World United States Canada Brazil Greenland, Europe, and the U.S.S.R. Africa India...Survey and H. S. de Schmid (1912) Figure 12-4 : Canadian Geological Survey and H. S. de Schmid (1912) Figure |  | | Book (edition) | | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Ethiopia, G Page 12: Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California..."Dana's System of Mineralogy•· ( 1944, I 951, 1962). de Fourestier (1999) and Strunz and Nickel (2001). Mi11eral...ASG -Archives de Science Geneve BM - Bulletin de la Societe fram;aise de mineralogie et de cristallographie |  | | Report (volume) | | Th) (Ti, Nb) 2 0 6 - - - - - - May be a high RE thorite or thorogummite - - - Also aeschynite - Poorly...Ce) Ti Oa - - - - - - - - - (Y, U)(Ti, Zr, Fe, Nb)dO, OH)a -· - - - - - - Cerian ferrian pyrochlore -...Cienc. Anais-Academia Brasileira de Ciencias, Anais. Rio de Janeiro, Brazil. Acad. Cienc. Lisboa, Cl. Sci...Sci. Mem.-Academia das Ciencias de Lisboa. Classe de Sciencias. Memorias. Lisbon, Portugal. Acad. Nat....Polonaise Sci. Bull., Ser. Sci. Geol. et Geog.-Bulletin de l'Academie Polonaise des Sciences, Serie des Sciences |  | | Book | | present level of exposure. Even when veins 1008 do occur within or in the proximity of a "granite",... because most postmagmatic hydrothermal deposits do occur in the proximity, in the aureole of igneous...Paredes J.) in Bellido and de Montreuil (1972). Abbreviations: CP=Cerro de Pasco; M=Morococha; Ml=Mala...around the Andean Batholith of Peru (Bellido and de Montreuil, 1972; Putzer, 1976; Hollister, 1978) is...major Pb,Zn,Ag replacements and veins (e.g. Cerro de Pasco, Casapalca; Chapter 26), all marked by intensive |  | | Book | | present level of exposure. Even when veins 1008 do occur within or in the proximity of a "granite",... because most postmagmatic hydrothermal deposits do occur in the proximity, in the aureole of igneous...Paredes J.) in Bellido and de Montreuil (1972). Abbreviations: CP=Cerro de Pasco; M=Morococha; Ml=Mala...around the Andean Batholith of Peru (Bellido and de Montreuil, 1972; Putzer, 1976; Hollister, 1978) is...major Pb,Zn,Ag replacements and veins (e.g. Cerro de Pasco, Casapalca; Chapter 26), all marked by intensive |  | | Book (edition) | | es: CW DB DE DG DJ DK DM DO DP DS EB EO EE FM GD GG GH GM Arnold Hampson David Baker Ben De Witt William... All faces or other surfaces on a given mineral do not necessarily exhibit the same luster. Some minerals...more references where all references are inadequate, do not contain good bibliographies, or are in conflict...CLASS: 4/mmm SPACE GROUP: P4/ncc; P4/nmm(Pseudo) Ve De LATTICE CONSTANTS: Ga tae 9908 3 STRONGEST DIFFRACTION...in a calcite matrix Mendoza, Argentina. at Cerro de Cacheuta, SELECTED REFERENCE: Deer, Howie, and Zussman | | | Book (edition) | | Tsurneb, Namibia, (lower, right) gold, Amazonas, Brazil All specimens from the collection of Eugene and...figure caption code. Arnold Hampson David Baker Ben De Witt William Larson Carlos Barbosa Cal and Kerith...Mines cw Charles and Marcelle Weber DB Dan Behnke DE Demetrios Pohl DG Richard Graeme DJ D. K. Jones Douglas...Douglas K. Miller DK Arizona-Sonora Desert DM Museum DO = "Donald Olson Delma Perry DP DS David Shannon EB...forth. All faces or other surfaces on a given mineral do not necessarily exhibit the same Juster. Some minerals |  | | Journal (article/letter/editorial) | | Thenardite Thomsonite-(Ca) Thoreaulite Thorianite Thorite Thortveitite Thorutite Thulite Tiemannite Tinaksite...orientation of individual veins is often seen, they do not show up in platform sediments far off the uplifted...control on the aerial extension of these veins which do not reach very deep into the host rock underneath...which sometimes are enriched in inorganic compounds do not directly fit in this differentiation scheme and...classification scheme like this, these man-made raw materials do not fit in, even if they are primarily derived from | | | Journal (article/letter/editorial) | | Thenardite Thomsonite-(Ca) Thoreaulite Thorianite Thorite Thortveitite Thorutite Thulite Tiemannite Tinaksite...orientation of individual veins is often seen, they do not show up in platform sediments far off the uplifted...control on the aerial extension of these veins which do not reach very deep into the host rock underneath...which sometimes are enriched in inorganic compounds do not directly fit in this differentiation scheme and...classification scheme like this, these man-made raw materials do not fit in, even if they are primarily derived from |  | | Book | | production, reserves, and utilization of met allic mineral de posits throughout the world bas changed materially...they will be referred to collectively as mineral de posits. Since the history of the origin and accumulation...such a manne r that o pe nings favorable for ore de pos iti o n occur (Fig. 2-6) , w he reas incompete...tend to yield plastically or by fl owage and thu s do no t prov ide openings favorable for o re d eposition...of values or occurrence of shoots in metalliferous de posits , Econ . G eology, vol. 3, pp. 143- 145. 34 |  | | Book (edition) | | etc. All faces or other surfaces on a given mineral do not necessarily exhibit the sa1ne luster. Mode of...references where all references are inadequate or do not contajn good bibliographies or are in conflict...text. Our procedure was changed, in part, because we do not want to represent this book as the best reference...another matter: I do not quite know how my love for the microscope began, but I do know about the 1ninerals...intergrown with clausthalite in a calcite matrix at Cerro de Cacheu ta, Mendoza, Argentina. BEST REF. IN ENGLISH: |  | | Report (issue) | | -----------------------------Mineral potential: 1Nhere do 1Ne stand? --------Lo1N-grade ores and the environment...civilization and standard of living? (2) how much of it do we have and to what extent is it economically and...our supply of any minerals unlimited? Of which ones do we have very little, or are we likely to run out...question to which the volume is directed : Where do we stand with regard to resources of each commodity...research along many lines. MINERAL POTENTIAL: WHERE DO WE STAND? Each chapter of the volume has its own |  | | Book | | behaviour but sufficiently significant fractionations do occur, which have proved to be of great importance...ions can occupy six-fold co-ordination sites but do so only rarely in minerals. Normally the co-ordination...Experimental determinations do not suffer from the same associated uncertainties as do those from natural systems...on element distribution. The experiments, however, do not reproduce all the conditions prevailing during...geochimique des gisements d e fluorine bases sur l'etude de la distribution des lanthanides — application au |  | | Report (issue) | | fields of competence for other Federal agencies that do not have the required specialized staffs or scientific...Mississippian and probable Devonian 28 age in the Sangre de Cristo Mountains-----28 Geology of parts of Nebraska...Diamond deposits in Bahia, Brazil._______________ 53 Uranium in the Serra de Jacobina, Bahia, Brazil____...ridge, and, accordingly, economic phosphate deposits do not occur there. J. B. Cathcart and F. W. Osterwald...rare earths are concentrated in (a) veins bearing thorite and thorogummite, (b) dikes and plug-like bodies |  | | Report (issue) | | MINING, METALLURGY AND PETROLEUM Suite 1210, 3400 de Maisonneuve Boulevard West Montréal, Québec, Canada...Gordon Coveney, Ray Creaser, Robert Crocket, Jim De Vaux, Deryck Ebel, Denton Eckstrand, Roger Evans...mineralogical relationships at the currently operating Lac de Iles mine (Ontario), the Marathon deposit in the...described a downsized NiS collection modification to do radiochemical separation and then INAA. Recoveries...NiS fire assay with INAA and ICP/MS finishes will do the best job. Occasionally, use of the Pb collection |
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