 | Mathieu, Régis, Zetterström, Lena, Cuney, Michel, Gauthier-Lafaye, François, Hidaka, Hiroshi (2001) Alteration of monazite and zircon and lead migration as geochemical tracers of fluid paleocirculations around the Oklo–Okélobondo and Bangombé natural nuclear reaction zones (Franceville basin, Gabon) Chemical Geology, 171 (3) 147-171 doi:10.1016/s0009-2541(00)00245-x | Journal (article/letter/editorial) | | around the Oklo–Okelobondo and Bangombe´ natural nuclear reaction zones ´ žFranceville basin, Gabon/ Regis...rue Blessig, Strasbourg Cedex F-67084, France ´ Department of Earth and Planetary Systems, Faculty of Science...sandstones of the Franceville basin ŽGabon. hosting Oklo natural nuclear reaction zones ŽRZ. in relation...Zircon; Alteration; Diagenesis; Migration; Lead; Oklo; Franceville 1. Introduction Spontaneous natural...three U deposits of the Franceville basin, Gabon, namely Oklo, Okelobondo and Bangombe´ ŽFig. 1.. ´ Natural |  | Emproto, Christopher, Alvarez, Austin, Anderkin, Christian, Rakovan, John (2020) The Crystallinity of Apatite in Contact with Metamict Pyrochlore from the Silver Crater Mine, ON, Canada. Minerals, 10 (3) 244 doi:10.3390/min10030244 | Journal (article/letter/editorial) | | with Metamict Pyrochlore from the Silver Crater Mine, ON, Canada Christopher Emproto 1 , Austin Alvarez...Christian Anderkin 2 and John Rakovan 1, * 1 2 * Department of Geology and Environmental Science, Miami University...emprotcr@miamioh.edu (C.E.); alvarezam@miamioh.edu (A.A.) Department of Geological Sciences, University of Florida...Grenville-aged crustal carbonatite at the Silver Crater Mine in direct contact with U-bearing pyrochlore (var...consistent with other similar deposits in the Grenville Province. Although apatite and betafite imaged using cathodoluminescence |  | | Journal (article/letter/editorial) | | VÉRONIQUE POINTEAU1,4 and RODNEY C. EWING1 1 2 Department of Geological Sciences, University of Michigan...e-mail: artur.deditius@csiro.au 3 Present address: Department of Chemistry, Kyushu University, Ropponmatsu...0–2, carbonate-fluorapatite (CFAp) and (Ca, Sr)-(meta)autunite (MAut) from the Woodrow Mine, Grants uranium...coffinite, (Ca,Sr)-(meta)autunite, carbonate-fluorapatite, reducing conditions, oxidizing conditions....2003), for which coffinite occurs with carbonate-fluorapatite (CFAp) and (Ca,Sr)-(meta)autunite (M-Aut). This |  | | Journal (article/letter/editorial) | | actinides has been found in the Oklo natural nuclear reactor in Gabon (Horie et al. 2004). (3) The apatite...Comparison of the dissolution rates (log r) of fluorapatite, monazite, and borosilicate glass as a function...function of pH at 80°C. The data for fluorapatite, monazite, and borosilicate glass are from Chaïrat et al...Delage and Dussossoy (1991), respectively. The fluorapatite dissolution rate at 80°C was determined from...resistance to radiation damage. Natural analogues from Gabon prove that these materials can persist for 2 billion |  | Cámara, Fernando, Curetti, Nadia, Benna, Piera, Abdu, Yassir A., Hawthorne, Frank C., Ferraris, Cristiano (2018) The effect of type-B carbonate content on the elasticity of fluorapatite. Physics and Chemistry of Minerals, 45 (8) 789-800 doi:10.1007/s00269-018-0962-1 | Journal (article/letter/editorial) | | type-B carbonate content on the elasticity of fluorapatite Fernando Cámara1,2 Cristiano Ferraris6 · Nadia...The mechanical behavior of carbonate-bearing fluorapatite (CFAP) (with up to 5.5 wt% C O3) was investigated...modulus by about 9%. Keywords Carbonate-rich fluorapatite · FTIR spectra · HP SC-XRD · Crystal structure...Via Valperga Caluso 35, 10125 Torino, Italy 4 Department of Applied Physics and Astronomy, University...of Sharjah, P.O. Box 27272, Sharjah, UAE 5 Department of Geological Sciences, University of Manitoba |  | | Journal (article/letter/editorial) | | transport through two mixing zones affected by acid mine drainage near Silverton, Colorado— Laurence E. Schemel...deposit of the Shuikoushan mineral district, Hunan Province, China— Nanshi Zeng, E. Izawa, Y. Motomura, and...during alteration—H.-J. Förster 67 As-bearing fluorapatite in manganiferous deposits from St. Marcel– Praborna...101 Complexly zoned fibrous tourmaline, Cruzeiro mine, Minas Gerais, Brazil: A record of evolving magmatic...Evidence for a Cambrian diamondiferous alkaline province in northeastern North America—Stéphane Digonnet |  | | Journal (article/letter/editorial) | | ion in fluorapatite synthesized at high pressure MICHAEL E. FLEET* AND XI Lnr Department of Earth...of francolite. Keywords: Apatite structure, fluorapatite, carbonate ion, biomineralization, dental enamel...in hydroxylapatite [CalO(P04MOH)2; HAP] and fluorapatite [CalO(P04)6F2; FAP] has been extensively investigated...micrometer-scale layer (Brudevold et al. 1956). Moreover, fluorapatite is a practical host for the containment of high-level...by its occurrence in the natural reactor at Oklo, Gabon (e.g., Bros et al. 1996). This study also provides |  | Owen, Nicholas D., Cook, Nigel J., Rollog, Mark, Ehrig, Kathy J., Schmandt, Danielle S., Ram, Rahul, Brugger, Joël, Ciobanu, Cristiana L., Wade, Benjamin, Guagliardo, Paul (2019) REE-, Sr-, Ca-aluminum-phosphate-sulfate minerals of the alunite supergroup and their role as hosts for radionuclides. American Mineralogist, 104 (12) 1806-1819 doi:10.2138/am-2019-7116 | Journal (article/letter/editorial) | | phases after pre-existing REE-bearing phosphates (fluorapatite, monazite, and xenotime). Characterization with...In another Cu deposit within the Olympic Cu-Au province, Owen et al. (2018) identified at least two events...abundant in the Olympic Dam deposit, and include fluorapatite (Krneta et al. 2016, 2017, 2018), florencite-(Ce)...sericitic mica, Fe-dominant chlorites (chamosite), fluorapatite, baryte, and fluorite. Individual APS mineral...observed to replace Ca-bearing minerals, including fluorapatite (Fig. 3a) and fluorite (Fig. 4a). EDS element |  | | Journal (article/letter/editorial) | | phosphate apatites, Ca10(PO4)6(F,OH,Cl)2, including fluorapatite, hydroxyapatite, and chlorapatite are collectively...hydrothermal apatites associated with the 2 Ga old Oklo natural reactors (Bros et al. 1996). It has been...Ra. When typical waste effluents from a uranium mine are treated with apatite, radium-leach values are...measured sorption of selenium by hydroxyapatite, fluorapatite, and iron oxides and found sorption of selenite...uptake occurring at a pH of ~8. Sorption by fluorapatite was not significantly affected by pH but the |  | | Journal (article/letter/editorial) | | Michael e. Fleet,1,* Xiaoyang liu,2 and Xi liu3 Department of Earth Sciences, University of Western Ontario...Pan and Fleet 2002; Harlov et al. 2002). Also, fluorapatite is a practical host for the containment of high-level...by its occurrence in the natural reactor at Oklo, Gabon (e.g., Bros et al. 1996). Within the biosphere...(Brudevold et al. 1956), and CHAP and carbonated fluorapatite (CFAP; also francolite) are the dominant minerals...hydroxylapatite [HAP; ideally Ca10(PO4)6(OH)2; Z = 1], fluorapatite [FAP; Ca10(PO4)6F2], and chlorapatite [CLAP; |  | Škácha, P., Goliáš, V., Sejkora, J., Plášil, J., Strnad, L., Škoda, R., Ježek, J. (2009) Hydrothermal uranium-base metal mineralization of the Jánská vein, Březové Hory, Příbram, Czech Republic: lead isotopes and chemical dating of uraninite. Journal of GEOsciences, 54 (1) 1-13 | Journal (article/letter/editorial) | | 43 Prague 2, Czech Republic; skachap@volny.cz Department of Mineralogy and Petrology, National Museum...U – metallic U, Pb – PbSe, Th – ThO2, P, F – fluorapatite, Y – YAG, La – LaB6, Ce – CeAl2, Pr – PrF 3...uranium mineralization at the 2nd level of the Prokop mine. Calcite is a common mineral in the museum specimens...galena, Vojtěch mine, vein Protiklonná, 5th level (PR) No 495 J_4 galena, Vojtěch mine, main Vojtěch...th galena 0.8610 fine-grained galena, Štěpán mine, vein Klement, 2nd level (PR) No 1247 J_2 galena |  | | Journal (article/letter/editorial) | | Near-Surface Environments HEINRICH D. HOLLAND† Department of Earth and Planetary Sciences, Harvard University...has been more usefully applied to exploration and mine development in the Witwaterstrand basin than the... The giant iron ore deposits of the Hamersley province, Australia, are alteration products of BIF. The...the large hydrothermal uranium ores, those at Oklo, in Gabon, were formed 2,000 ± 50 Ma (i.e. close to the...McArthur basin, Australia, 1.6 Ga. B. Finland and Gabon, 2.0 to 2.15 Ga. C. Ventersdorp Group, South Africa |  | | Journal (article/letter/editorial) | | Callum J. Hetherington1,* and Daniel E. Harlov2 Department of Geosciences, University of Massachusetts,...assemblage of plagioclase (An43–49), orthopyroxene, fluorapatite, and Fe-Ti oxides (hemo-ilmenite and magnetite)...in the concentration of the hydrous phases. Fluorapatite in the unaltered anorthosite is euhedral and...the contact with the granitic pegmatites, the fluorapatite grains show slightly crenulated grain edges...mobilization of (Y+REE) in the Franceville Basin of Gabon (Cuney and Mathieu 2000; Mathieu et al. 2001). Both |  | | Report (volume) | | Editors: Peter C. Burns' & Robert Finch 2 1 Department of Civil Engineering and Geological Sciences...Environmental issues such as coping with uranium mine and mill tailings and other uranium-contaminated...and Geochemistry of Natural Fission Reactors in Gabon Janusz Janeczek 8 393 Geomicrobiology of Uranium...and Geochemistry of Natural Fission Reactors in Gabon Janusz Janeczek INTRODUCTION: NATURAL FISSION REACTORS...largest construction projects in the history of the Department of Energy. Approximately three billion dollars |  | Schindler, Michael, Lussier, Aaron J., Bellrose, Jacob, Rouvimov, Sergei, Burns, Peter C., Kyser, T. Kurt (2017) Mobilization and agglomeration of uraninite nanoparticles: A nano-mineralogical study of samples from the Matoush Uranium ore deposit. American Mineralogist, 102 (9) 1776-1787 doi:10.2138/am-2017-5984 | Journal (article/letter/editorial) | | Rouvimov2, Peter C. Burns2,3, and T. Kurt Kyser4 1 Department of Earth Sciences, Laurentian University, Sudbury...Sudbury, Ontario P3E 2C6, Canada Department of Civil and Environmental Engineering and Earth Sciences,...Notre Dame, Notre Dame, Indiana 46556, U.S.A. 3 Department of Chemistry and Biochemistry, University of...Notre Dame, Notre Dame, Indiana 46556, U.S.A. 4 Department of Geological Sciences and Geological Engineering...amorphous Cr-rich oxide matrix as well as with fluorapatite and galena. Nanoparticles on the surface and |  | | Journal (issue) | | Jianghshan, Guangdong Province. I have seen others listed as coming from Hebei Province. Regardless of where...4 Fig. 1. Apophyllite, Jianghshan, Guangdong Province, China, photo by Dan Weinrich. neat piece. To...the old classic locality, Morgabal, in Aveyron Department, France. Also, he had small trays holding small...stibnites from a new Nevada locality, the Murray Mine, not the old Manhattan, but he had only three specimens...clear calcites from a small pocket in the Meikle Mine, the new locality for the superb yellow barites |  | | Report (issue) | | UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY PRINCIPAL URANIUM DEPOSITS OF THE WORLD ...Angola, Peoples Republic of........................ Gabon, Republic of................................. Central...Saskatchewan, Canada; the Shinkolobwe, Katanga Province, Zafre; and the medium-sized deposits at Joachymov...Joachymov, Czechoslovakia, and at Schwartzwalder mine, Colorado, U.S.A.). Uranium deposits have been found...Australi a Sweden Spain France Ni ger Argenti na India Gabon Al geri a Yugoslavia Brazil Central African Republic |  | Luo, Y., Rakovan, J., Tang, Y., Lupulescu, M., Hughes, J. M., Pan, Y. (2011) Crystal chemistry of Th in fluorapatite. American Mineralogist, 96 (1) 23-33 doi:10.2138/am.2011.3438 | Journal (article/letter/editorial) | | pages 23–33, 2011 Crystal chemistry of Th in fluorapatite Yun Luo,1,* John Rakovan,1 Yuanzhi Tang,2 MaRian...LupuLescu,3 John M. hughes,4 and YuanMing pan5 1 Department of Geology, Miami University, Oxford, Ohio 45056...University, Cambridge, Massachusetts 02138, U.S.A. 3 Department of Geology, New York State Museum, Madison Avenue...A. 4 Department of Geology, University of Vermont, Burlington, Vermont 05405, U.S.A. 5 Department of Geological...results on the site occupancy of thorium in the fluorapatite structure and the structural distortion created |  | | Journal (article/letter/editorial) | | Editorial handling: R. Milke C. J. Hetherington (*) Department of Geosciences, Texas Tech University, Box 41053...et al. 2007; Hetherington et al. 2008). After fluorapatite, monoclinic monazite [(LREE,Th,U, Ca)(P,Si)O4]...euhedral xenotime crystal from the Northwest Frontier Province (NWFP), Pakistan, measuring approximately 1 cm...Kangankunde carbonatite complex in the Chilwa Alkaline Province, southern Malawi (Garson and Campbell-Smith 1965;...complex; c Xenotime-(Y) from the Northwest Frontier Province Brazila 167 apfu Malawib apfu NWFPc apfu |  | Ohnuki, T., Kozai, N., Samadfam, M., Yasuda, R., Yamamoto, S., Narumi, K., Naramoto, H., Murakami, T. (2004) The formation of autunite (Ca(UO2)2(PO4)2nH2O) within the leached layer of dissolving apatite: incorporation mechanism of uranium by apatite. Chemical Geology, 211 (1) 1-14 doi:10.1016/j.chemgeo.2004.03.004 | Journal (article/letter/editorial) | | 2-4 Shirakata, Tokai, Ibaraki 319-1195, Japan b Department of Environmental Sciences, Japan Atomic Energy...Research Institute, Tokai, Ibaraki 319-1195, Japan c Department of Hot Laboratories, Japan Atomic Energy Research...Research Institute, Tokai, Ibaraki 319-1195, Japan d Department of Material Development, Japan Atomic Energy...Institute, Takasaki, Gunma 370-1292, Japan e Department of Earth and Planetary Science, The University...We carried out experiments of U(VI) uptake by fluorapatite (FAp) plate samples with a U(VI) concentration |  | Budzyn, B., Harlov, D. E., Williams, M. L., Jercinovic, M. J. (2011) Experimental determination of stability relations between monazite, fluorapatite, allanite, and REE-epidote as a function of pressure, temperature, and fluid composition. American Mineralogist, 96 (10) 1547-1567 doi:10.2138/am.2011.3741 | Journal (article/letter/editorial) | | determination of stability relations between monazite, fluorapatite, allanite, and REE-epidote as a function of...Potsdam, Telegrafenberg, D-14473 Potsdam, Germany 3 Department of Geosciences, University of Massachusetts,...alteration of monazite to allanite, REE-epidote, fluorapatite, and/or fluorapatitebritholite was investigated...that the stability relations between monazite, fluorapatite, and allanite or REE-epidote are more dependent...promotes monazite dissolution and the formation of fluorapatite and allanite or REE-epidote. Lowering the Ca |  | | Journal (article/letter/editorial) | | context of the geological evolution of the Paterson Province, Western Australia David L. Huston 1 & Roland...mudstones of the Paleo- to Neoproterozoic Paterson Province, Western Australia, has features that have led...significant ore deposit in the Neoproterozoic Paterson Province of Western Australia (Fig. 1). This deposit (Fig...Neoproterozic rocks and mineral deposits in the Paterson Province. Initial Sr-Nd isotope data for Fig. 2 Schematic...Neoproterozoic Yeneena Supergroup in the Paterson Province, northern Western Australia (Bagas 2004). The |  | | Report (issue) | | CHAPTER 1: INTRODUCTION Kurt Kyser Department of Geological Sciences and Geological Engineering, Queen’s...engineered. Once an ore deposit is discovered, a mine is developed and U extracted by a variety of mining...Bay Basin in Canada and the Franceville Basin in Gabon, but at the boundary between sandstone and grey...the oldest deposits from the Franceville Basin in Gabon. Some of these latter deposits preserve the effects...gold mining. In Namibia, the large Rössing open cut mine has been in operation since 1976, and currently |  | Tartèse, Romain, Poujol, Marc, Gloaguen, Eric, Boulvais, Philippe, Drost, Kerstin, Košler, Jan, Ntaflos, Theodoros (2015) Hydrothermal activity during tectonic building of the Variscan orogen recorded by U-Pb systematics of xenotime in the Grès Armoricain formation, Massif Armoricain, France. Mineralogy and Petrology, 109 (4) 485-500 doi:10.1007/s00710-015-0373-7 | Journal (article/letter/editorial) | | University, Walton Hall Milton Keynes MK7 6AA, U K 5 Department of Earth Science and Centre for Geobiology, University...Survey, Klarov 3, Prague 1, Czech Republic 7 Department of Lithospheric Research, University of Vienna...the growth of a first generation of Sr-bearing fluorapatite (Chauvel and Phan 1965; Moëlo et al. 2008)....probe microanalyses (EPMA) were performed at the Department of Lithospheric Research of the University of...coupled plasma spectrometry (LA-ICP-MS) at the Department of Earth Science at the University of Bergen |  | | Journal (article/letter/editorial) | | packages containing special spent fuel from the Department of Energy and high-level nuclear waste glass...the only known natural reactors went critical in Oklo, West Africa (Gauthier-Lafaye et al., 1996) 2 Ga...Other factors, such as lack of neutron absorber at Oklo but not at Cigar Lake (presence of B), also contributed...Mountain site is the confinement sustained by the Oklo nuclear reactors. The criticality events that lasted...negative feedback mechanisms. In that sense, the Oklo reactors are more an analog to current commercial |
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