 | Ouiya, Pascal, Siebenaller, Luc, Salvi, Stefano, Béziat, Didier, Naba, Séta, Baratoux, Lenka, Naré, Athanase, Franceschi, Guy (2016) The Nassara gold prospect, Gaoua District, southwestern Burkina Faso. Ore Geology Reviews, 78. 623-630 doi:10.1016/j.oregeorev.2015.11.026 | Journal (article/letter/editorial) | | gold prospect, Gaoua District, southwestern Burkina Faso Pascal Ouiya a,b, Luc Siebenaller b,c,⁎, Stefano...Guy Franceschi f a Université de Ouagadougou, Burkina Faso Université de Toulouse, CNRS, Géosciences Environnement...Keywords: West African Craton Boromo Greenstone Belt Burkina Faso Orogenic gold Shear zone a b s t r a c t The...Birimian Boromo Greenstone Belt in southwestern Burkina Faso. It is part of a larger mineralized field that...distinguished in alteration halos of small quartz–albite–ankerite veins that form networks along the shear |  | Kříbek, Bohdan, Sýkorová, Ivana, Machovič, Vladimír, Knésl, Ilja, Laufek, František, Zachariáš, Jiří (2015) The origin and hydrothermal mobilization of carbonaceous matter associated with Paleoproterozoic orogenic-type gold deposits of West Africa. Precambrian Research, 270. 300-317 doi:10.1016/j.precamres.2015.09.017 | Journal (article/letter/editorial) | | metasediment-hosted, orogenic-type gold deposits in Burkina Faso (the Inata deposit), in Mali (the Syama deposit),...Ghana (the Obuashi and Bogoso deposits), Burkina Faso (the Inata deposit) and Mali (the Syama deposit) using...two major vibrons in the first-order Raman spectra region attributed to the crystalline and disordered phases...greenschist facies are typical of the Obuashi and Inata deposits. Conversely, the lowest Rmax value, typical...Number of measurements Syama, SYD044/4 Inata, INDD0064/2 Inata, INDD0064/1 Obuashi, SIBI GOS41B Obuashi |  | Salvi, S., Sangaré, A., Driouch, Y., Siebenaller, L., Béziat, D., Debat, P., Femenias, O. (2016) The Kalana vein-hosted gold deposit, southern Mali. Ore Geology Reviews, 78. 599-605 doi:10.1016/j.oregeorev.2015.10.011 | Journal (article/letter/editorial) | | in the Kalana region had been exploited by artisanal mining methods long before the mine existed. The...1985 and lasted until 1991, during which time the mine produced approximately 81,000 oz of gold (227,000...from the Malian government. Within two years, the mine was back in operation. Avnel entered into a 3year...estimate for an open-pit operation near the underground mine, with 2.11 Moz grading 4.52 g/t, and an inferred...type Current owner Average grade Tonnage Sikasso Region of Southern Mali. The deposit is situated some |  | Le Mignot, Elodie, Siebenaller, Luc, Béziat, Didier, André-Mayer, Anne-Sylvie, Reisberg, Laurie, Salvi, Stefano, Velasquez, Germán, Zimmermann, Catherine, Naré, Athanase, Franceschi, Guy (2017) The Paleoproterozoic Copper-Gold Deposits of the Gaoua District, Burkina Faso: Superposition of Orogenic Gold on a Porphyry Copper Occurrence?. Economic Geology, 112 (1) 99-122 doi:10.2113/econgeo.112.1.99 | Journal (article/letter/editorial) | | Copper-Gold Deposits of the Gaoua District, Burkina Faso: Superposition of Orogenic Gold on a Porphyry...the Boromo-Goren greenstone belt in southern Burkina Faso, is a rare case where economic copper and gold...in Sénégal) or Mn deposits (e.g., Tambao in Burkina Faso); (2) synorogenic deposits, which are represented...recognized two main styles of gold mineralization in Burkina Faso. The first type is characterized by gold associated...alteration halos of undeformed and barren quartz ± albite ± carbonate veins. The latter mineralization type |  | | Journal (article/letter/editorial) | | Africa: The World’s Premier Paleoproterozoic Gold Province* Richard J. Goldfarb,1, 2,† Anne-Sylvie André-Mayer...and the largest Paleoproterozoic gold-producing region. The gold resources are concentrated within the...in greenstone belts in Ghana, Mali, Senegal, Burkina Faso, Cote d’Ivoire (or Ivory Coast), and Guinea...significance of the gold mineralization within this region. With an endowment of >2,500 t Au, the Obuasi deposit...including the Yilgarn craton and the Superior province. In addition to the widespread orogenic gold |  | Le Mignot, Elodie, Reisberg, Laurie, André-Mayer, Anne-Sylvie, Bourassa, Yan, Fontaine, Arnaud, Miller, John (2017) Re-Os Geochronological Evidence for Multiple Paleoproterozoic Gold Events at the Scale of the West African Craton. Economic Geology, 112 (1) 145-168 doi:10.2113/econgeo.112.1.145 | Journal (article/letter/editorial) | | timing of gold events: Nassara and Kiaka in Burkina Faso and Wassa, Damang, and Obuasi in southern Ghana...production of Ghana, which was the main gold-producing region in Africa before the discovery of the Witwatersrand...MIGNOT ET AL. 10°N 5°N 0° 15°N Essakhane NIGER Inata Yatela Sadiola SENEGAL Loulo MALI Siguiri GUINEA... Ouagadougou Wona-Kona Morila Kalana GO BURKINA FASO Nassara BENIN TO G LW O 10°N Fig.2a...Tarkwaian-type sediments in other regions, e.g., Burkina Faso (Baratoux et al., 2011). These Tarkwa units |  | | Journal (article/letter/editorial) | | 62 developed in Mali, Mauritania, Senegal, Burkina Faso, Ghana and Cote d’Ivoire. 63 The focus of...described from studies in Ghana and Page 5 of 87 Burkina Faso by Attoh (1982), Eisenlohr (1989), Feybesse...2006), and 2181 172 - 2117 Ma in northeast Burkina Faso (Tapsoba et al., 2013; Tshibubudze et al., this...000 km2 extending from Ghana, 229 Togo, and Burkina Faso to Niger. It is positioned near the south-eastern...presence of the volcanic rocks in 247 the Dakar region indicates that magmatic activity, with concomitant |  | Parra-Avila, Luis A., Kemp, Anthony I.S., Fiorentini, Marco L., Belousova, Elena, Baratoux, Lenka, Block, Sylvain, Jessell, Mark, Bruguier, Olivier, Begg, Graham C., Miller, John, Davis, James, McCuaig, T. Campbell (2017) The geochronological evolution of the Paleoproterozoic Baoulé-Mossi domain of the Southern West African Craton. Precambrian Research, 300. 1-27 doi:10.1016/j.precamres.2017.07.036 | Journal (article/letter/editorial) | | westernmost 51 portion when compared to the easternmost region. In addition, the new U-Pb data identify 52 ...oldest felsic intrusions in the region, including a granite from Burkina Faso (2265 53 ± 17 Ma) and a diorite...74 of involvement of older Archean crust in a region that is regarded to be the result of juvenile ...Nonetheless, most of 80 these studies are the result of mine-scale to belt-scale mapping projects, in many cases...the evolution of 97 the region. The study area extends over Burkina Faso, southern Mali, eastern Guinea |  | Tedeschi, M.T., Hagemann, S.G., Kemp, A.I.S., Kirkland, C.L., Ireland, T.R. (2020) Geochronological constrains on the timing of magmatism, deformation and mineralization at the Karouni orogenic gold deposit: Guyana, South America. Precambrian Research, 337. 105329 doi:10.1016/j.precamres.2019.04.015 | Journal (article/letter/editorial) | | Node, The Institute for Geoscience Research, Department of Applied Geology, Western Australian School...35 km to the W of the former producing 5 Moz Omai mine and is interpreted to be an orogenic gold deposit...and timing of gold mineralization throughout the region. Magmatism within the 200 km2 of the Karouni camp...of orogenic gold mineralization in the Birimian Province of West Africa. Keywords: Karouni, Guyana, Orogenic...granite-greenstone belt terrane, the Trans-Amazonian Province of Paleoproterozoic age (Santos et al., 2000) |  | Parra-Avila, Luis A., Baratoux, Lenka, Eglinger, Aurélien, Fiorentini, Marco L., Block, Sylvain (2019) The Eburnean magmatic evolution across the Baoulé-Mossi domain: Geodynamic implications for the West African Craton. Precambrian Research, 332. 105392 doi:10.1016/j.precamres.2019.105392 | Journal (article/letter/editorial) | | evidence to associate the tectonic evolution of the region with Archean-style vertical accretion tectonics...from the BaouléMossi domain, particularly from Burkina Faso, southern Mali and eastern Guinea, during the...to support vertical tectonic models across the region. Alternatively, Ama Salah et al. (1996) identified...identified granitic batholiths across the Liptako region (Niger) that are characterized by medium-K/calc-alkaline...TTG-equivalents predominately based on normative Anorthite-Albite-Orthoclase discrimination diagrams (e.g. Barker |  | Wang, Mengqi, Dai, Lidong, Hu, Haiying, Sun, Wenqing, Hu, Ziming, Jing, Chenxin (2022) Effect of Different Mineralogical Proportions on the Electrical Conductivity of Dry Hot-Pressed Sintering Gabbro at High Temperatures and Pressures. Minerals, 12 (3) 336 doi:10.3390/min12030336 | Journal (article/letter/editorial) | | Ab32 Or2 . Here, An, Ab, and Or denote anorthite, albite, and orthoclase, respectively) at temperatures...plagioclase is regarded as the solid solution of albite and anorthite. To explore the electrical transport... [17,18] measured electrical conductivities of albite and anorthite within the temperature ranges from...found that the dominant conduction mechanisms for albite and anorthite are of the alkali ion, i.e., the...in our samples. The electrical conductivity of albite reported by Hu et al. [17] was higher than our |  | | Journal (article/letter/editorial) | | mineral zonation of clay, analcime, K-feldspar, and albite. Entire sedimentary sections in the southern and...of the original hectorite discovery at the Hector Mine near Barstow, California” [2]. In pioneering work...Columbia Columbia River River Basalt Basalt Province. Province. H: High Rock caldera; HV: Hawks Hawks Valley...They are sparsely exposed in a few canyons and in mine and exploration workings in the northern part of...northwest Near Bretz Mine East side in mostly covered area Near Bretz Mine Near Cordero Mine White Hill, north-central |  | | Report (issue) | | may be purchased from Bureau of Publications Department of Property and Supplies Harrisburg, Pa. CONTENTS...erected by actio11 of the Deputy Governor of the Province. The town of York had been laid out 8 years before...Test of the county are .a part of the Piedmont Province and fall into three types-(1) The Gettysburg plain...'rhe Gettysburg plain is part of the Piedmont Province, but in general its surface is Jower than that...from the foot of the ice sheet, ,vhich in this region .vas as much as 110 miles fro1n the stretch of |  | | Journal (article/letter/editorial) | | it furnishes an outlet for the coffee ~'owing region of the interior. Leaving the railway at 0roya,...have been paid to the structure of the mountainous region of the mainland until the beginning of the present...views of that author are not in accordance with mine, and I have therefore been led to give an independent...topographic feature. (3) An inter-Andean high-level region, comprising the Altaplanicie of Bolivia and the...of the Desaguadero and the Vileamayo Rivers; a region formed chiefly of the later Palaeozoic and transgressive |  | | Report (issue) | | 'f\ II --~~---i ) } ,t! l I HON, CANADA " DEPARTMENT OF MINES W, • • A. GORDON, MINISTER; CHARLES...Is/annual reportfor10000nati_f0h9 • CANADA DEPARTMENT OF MINES HON. w. A. GORDON, ?\1INISTERj CHARLES...carried on among the Tsimshian Indians of Nass River region, British Columbia, the Kwakiutl and Nootka tribes...are pleased to report that the Forestry Branch, Department of the Interior, has set up at considerable trouble...wood pulp, and that the Entomological Branch, Department of Agriculture, has assembled and set up a fine |  | | Report (issue) | | asse1·tecltbat tl1e valtlilble Dilhornc seam existed in a region i11 ,vl1ich it ,vas SUJ)posed to be abse11t. 'l'his...Camborne district, has been obtained from various mine-plans, supplemented in some cases by underground...as regards 1Vfr.tr.11. the stratigraphy of the region that have not been touched upon in Hill. former...the)"' are not copperbearing to such depths. Levant Mine (St. Just).-Tl1e operatio11s are alrr1ost entirely...from compact to coarse. Formerly, in East Levant Mine, there was evidence that at least one tin lode intersected |  | | Book | | exposed to our observation (artificial drill holes and mine shafts providing the only notable exceptions). On... andalusite | 100 |100 Aegirine (idealized) Albite-oligoclase Adbgs,9Ani1.1 Oligoclase Ab75An25 Andesine...above. Potash feldspar is in some cases replaced by albite, and as a rule small amounts of minerals containing...nepheline (Niggli values) St Albite-granite, Lapland Observed: 59% albite, quartz, 3% accessories 38%...2698 tA Nepheline-syenite, Maine Observed: 47% albite, 27% orASE : thoclase, 17% nepheline, 2% cancrinite |  | | Report (edition) | | perceptible on the ground. · This is a gently undulating region, furnished with a system of shallow ramifying valleys...HUMAN OCCUPATION AND INDUSTRY Historically, the region is notable for its tardy surrender to the forces...nesian Limestone are concealed, and are proved . in mine-workings and borings. Rocks below the uppermost...leave little doubt that the Permian rocks of this region were laid down in the western part of the Zechstein...igneous rocks were made in the Petrographical Department. These are preserved in the collection of English |  | | Book (volume) | | veramente splendidi di epidoto, di adu laria, di albite, di a mianto di anfibolo e perfino di titanite...presenti, come ii la clorite e la calcite; ria, 1 'albite, 2) 1Vli11erali « guida •• e cioe manifesta ovunque...rappresentativi: axinite, solfato di rame (calcantite), albite, babingtonite, cianite, anortite (vedi anche Fig...concrescimento di rutilo su ematite (Alpi svizzere) o di albite su 51 . j J a 1 - Adularia, geminato , di...Val di Fassa. F ntanite Albile su ortoclasio Albite . Jordanite su blenda 53 Cap. IV Proprieta |  | | Book (edition) | | much fullness. Expeditions over the Rocky Mountain region, under F. V. Hayden, ClarCaptain Wheeler and others...repeated in the great post-Cretaceous mountain-making region. The Reptiles, Birds, and Mammals of the and continued...I. II. III. The are the divisions in this department earth's general contour System System — and...coastAbout the continents there is often a shallow region which is the line. sunken area, submerged border...(6) the United States and British Hydrographic Department, and from the soundings of the vessels of the |  | | Journal (volume) | | by insufficient appropriations. The lighthouse department also finds itself delayed on important work for...sufficient to store $60,000,000. THE Young America quartz mine of Sierra City has become a solid dividend payer...North Bloomfield is the most extensive hydraulic mine in the world, and the adoption of the "elevator...advandwelling in excellent stone houses of extremely the region easily cares for over 1000 head withtage of being...is strong to enlarge upon it at its traversing a region This results from ing from the northeast on its |  | | Journal (volume) | | Thom, invented by 93 Esq. of Rubieslaw. Lead Mine the Formation of Single Microscopes from Edinburgh...and debased condition of the human interesting region, over inhabitants, in whose many parts of this...spreads itself over this dry, parched, and sandy region, as soon as the rains begin to fall, is astonishing...prevailing vegetable productions are changed, —the mine- slate, now almost — or en- wooded, the patches... in depth, cost of this will the or, mine exclu- mine or be a very mode- rate calculation to |  | | Journal (volume) | | Thom, invented by 93 Esq. of Rubieslaw. Lead Mine the Formation of Single Microscopes from Edinburgh...and debased condition of the human interesting region, over inhabitants, in whose many parts of this...spreads itself over this dry, parched, and sandy region, as soon as the rains begin to fall, is astonishing...prevailing vegetable productions are changed, —the mine- slate, now almost — or en- wooded, the patches... in depth, cost of this will the or, mine exclu- mine or be a very mode- rate calculation to |  | | Book (volume) | | NORTH ATLANTIC REGION The Geology of North America The Western North Atlantic Region . Frontispiece...North America Volume M The Western North Atlantic Region Edited by Peter R. Vogt Naval Research Laboratory...Project: Shell Oil Inc. Getty Oil DNAG U.S. Department of Energy Company © 1986 by The Geological...be photocopied purpose of scientific Atlantic region. and included for the noncommercial or educational...of North America M, The Western North Atlantic Region The Geological Society of America, 1986 Vol. |  | | Book (edition) | | analysis of coarse-grained sediment; located in the Department of Geology, Portland State University, Oregon...is believed to have arisen across the Colorado region of western North America in Pennsylvanian time...SEDIMENTOLOGY down to yield kaolinite or illite, albite can decompose to kaolinite or montmorillonite,...turbulence in the head and body, the head may be a region of erosion while deposition is taking place from...time. As mentioned, for example, the head may be a region of potential erosion at the same time deposition |
|
